A squadron in an air force , or naval or army aviation service, is a unit comprising a number of military aircraft and their aircrews , usually of the same type, typically with 12 to 24 aircraft, sometimes divided into three or four flights , depending on aircraft type and air force.
120-807: The Eagle Squadrons were three fighter squadrons of the Royal Air Force (RAF) formed with volunteer pilots from the United States during the early days of World War II (1940), prior to the United States' entry into the war in December 1941. With the United States still neutral, many Americans simply crossed the border and joined the Royal Canadian Air Force (RCAF) to learn to fly and fight. Many early recruits had originally gone to Europe to fight for Finland against
240-422: A group and two or more groups will be designated as a wing . USAF squadrons may be flying units composed of pilots and flight crews, with designations such as fighter squadron, bomb squadron, or airlift squadron. Fighter squadrons may support between 18 and 24 aircraft, while larger aircraft flying squadrons (e.g., bomber, cargo, reconnaissance) may support fewer aircraft. However, non-flying units also exist at
360-484: A 1,230 kW (1,672 PS; 1,649 hp) DB 601R racing engine, set a new world air speed record for landplanes with piston engines of 610.95 km/h (379.63 mph), winning the title for Germany for the first time. Converted from a Bf 109D, the V13 had been fitted with a special racing DB 601R engine that could deliver 1,230 kW (1,672 PS; 1,649 hp) for short periods. Heinkel , having had
480-494: A 20 mm MG FF/M autocannon, the "/M" suffix indicating the capability of firing thin-walled 20mm mine shells , installed internally in each wing. In place of internal wing armament, additional firepower was provided through a pair of 20 mm MG 151/20 cannons installed in conformal gun pods under the wings. The conformal gun pods, exclusive of ammunition, weighed 135 kg (298 lb); and 135 to 145 rounds were provided per gun. The total weight, including ammunition,
600-672: A closed canopy, and retractable landing gear. A liquid-cooled, inverted-V12 aero engine powered it. It was called the Me 109 by Allied aircrew and some German aces, even though this was not the official German designation. The plane was designed by Willy Messerschmitt and Robert Lusser , who worked at Bayerische Flugzeugwerke during the early to mid-1930s. It was conceived as an interceptor . However, later models were developed to fulfill multiple tasks, serving as bomber escort , fighter-bomber , day -, night-, all-weather fighter , ground-attack aircraft , and aerial reconnaissance aircraft. It
720-720: A commanding officer (CO) at the lieutenant colonel level, may not have an equivalent rank executive officer (XO), but are moving more toward the USN model. USMC aviation (Flying) squadron XO's are aeronautically designated officers in the rank of Lt.Col or Major. Also in contrast to USAF flying squadrons, most tactical sea-based and land-based U.S. Naval Aviation squadrons (USN and USMC), vice training squadrons and test and evaluation squadrons, usually do not have more than 12 aircraft authorized/assigned at any one time. Exceptions are USN helicopter mine countermeasures squadrons (17 MH-53), USMC "composite" medium tilt-rotor squadrons assigned afloat as
840-566: A cut-off system: if one radiator leaked you could fly on the second or close both down and fly at least five minutes more. The pilot was protected by armour-plate from the back, and the fuel tank was also behind armour. Our planes had fuel tanks in the centre of their wings: that's why our pilot got burnt. What else did I like about the Messer? It was highly automatic and thus easy to fly. It also employed an electrical pitch regulator, which our planes didn't have. Our propeller system, with variable pitch
960-447: A disadvantage for a light fighter, decreasing the aircraft's rate of roll and manoeuvrability. As a result, the He 112 V4 which was used for the trials had new wings, spanning 11.5 m (37 ft 8.75 in) with an area of 21.6 m (232.5 ft ). However, the improvements had not been fully tested and the He 112 V4 could not be demonstrated in accordance with the rules laid down by
1080-616: A high school diploma, age 20 to 31 years, visual acuity of 20/40 correctable to 20/20, and 300 hours of certified flying time. These requirements, with the exception of the flight time, were not as strict as those required for service in the United States Army Air Corps, which was why some of the pilots joined the squadron. Most Eagle Squadron pilots did not have a college education or prior military experience. Once in Britain and having passed basic flight training,
1200-409: A large extent. From the inception of the design, priority was given to easy access to the powerplant, fuselage weapons and other systems while the aircraft was operating from forward airfields . To this end, the entire engine cowling was made up of large, easily removable panels which were secured by large toggle latches. A large panel under the wing centre section could be removed to gain access to
1320-559: A move to RAF Kirton-in-Lindsey . In April, the squadron transferred to RAF Martlesham Heath in Suffolk for operations over Europe. During May, it suffered its first loss when Mike Kolendorski was killed during a fighter sweep over the Netherlands. The intensity of operations stepped up with a move into No 11 Group of Fighter Command , being based at RAF North Weald by June 1941. On June 21, 1941, 22 year-old Nathaniel Maranz became
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#17327766381581440-499: A novel, complex retractable main undercarriage which proved to be unreliable. Initially, the Bf 109 was regarded with disfavour by E-Stelle test pilots because of its steep ground angle, which resulted in poor forward visibility when taxiing; the sideways-hinged cockpit canopy, which could not be opened in flight (but could be dropped by the emergency arm). They were also concerned about the high wing loading. The Heinkel He 112 , based on
1560-456: A piston-engined aircraft was to stand until 1969, when Darryl Greenamyer 's modified Grumman F8F Bearcat , Conquest I , broke it with a 777 km/h (483 mph) record speed. When the Bf ;109 was designed in 1934, by a team led by Willy Messerschmitt and Robert Lusser , its primary role was that of a high-speed, short-range interceptor. It used the most advanced aerodynamics of
1680-468: A problem with inexperienced pilots, especially during the later stages of the war when pilots received less training before being sent to operational units. At least 10% of all Bf 109s were lost in takeoff and landing accidents, 1,500 of which occurred between 1939 and 1941. The installation of a fixed "tall" tailwheel on some of the late G-10s and −14s and the K-series helped alleviate the problem to
1800-537: A scaled-down Blitz , was the favourite of the Luftwaffe leaders. Compared with the Bf 109, it was also cheaper. Positive aspects of the He ;112 included the wide track and robustness of the undercarriage (this opened outwards from mid wing, as opposed to the 109s which opened from the wing root ), considerably better visibility from the cockpit and a lower wing loading that made for easier landings. In addition,
1920-670: A squadron called an escuadron and a flight called an escuadrilla ), as does the Brazilian Air Force with esquadrão and esquadrilha respectively. The Royal Canadian Air Force and the Belgian Air Component on the other hand use escadrille as the equivalent of a squadron. The Italian Air Force uses gruppo (group) to denominate its squadrons, as does the Chilean Air Force ( grupo de aviación ). The Portuguese Air Force ( esquadra ) and
2040-645: A squadron or group/wing organizational structure. The one exception to this is the Coast Guard's Helicopter Interdiction Squadron (HITRON), which is engaged primarily in counter-narcotics (CN) interdiction operations. In the United States Army Aviation Branch , flying units may be organized in battalions or squadrons (the latter for air cavalry only) reporting to an aviation brigade. Aircraft maintenance activities are typically assigned to an aviation maintenance company or element in
2160-449: A top speed of 400 km/h (250 mph) at 6,000 m (20,000 ft), to be maintained for 20 minutes, while having a total flight duration of 90 minutes. The critical altitude of 6,000 metres was to be reached in no more than 17 minutes, and the fighter was to have an operational ceiling of 10,000 m (33,000 ft). Power was to be provided by the new Junkers Jumo 210 engine of about 522 kW (710 PS; 700 hp). It
2280-746: Is reported that Pilot Officer Art Donahue DFC stayed with the Eagle Squadron only a short time before requesting a transfer back to his original RAF unit. He did not appreciate the unruly behavior of many of the American pilots. He was killed in action in 1942. Captain Don Gentile was a pilot with 133 Squadron, claiming two air victories, and by March 1944 had become the 4th Fighter Group's top ace in World War II, with 22 aerial kills. Colonel Chesley "Pete" Peterson had 130 sorties with
2400-595: Is squadron in its army company-equivalent meaning. In the early 2000s, the Swedish Air Force absorbed the Helicopter Wing as its fourth combat air wing. Unlike the US Air Force, where the name of the base and the units stationed at that base are not related to each other, the name of the wing (flotilla) is in general considered synonymous with the air base where the unit is stationed. For example,
2520-604: The 414th Combat Training Squadron that manages RED FLAG training at Nellis AFB , Nevada will be commanded by an aeronautically rated officer in the rank of full colonel . Non-flying squadrons are also usually commanded by an officer in the rank of lieutenant colonel , but some may also be commanded by officers in the rank of major . In contrast to the organizational structure of United States Air Force units, where flying squadrons are separate from non-flying squadrons tasked with administrative, aircraft maintenance, or other support functions, flying squadrons in naval aviation in
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#17327766381582640-669: The Eastern Front . The highest-scoring, Erich Hartmann , was credited with 352 victories. The aircraft was also flown by Hans-Joachim Marseille , the highest-scoring ace in the North African campaign , who shot down 158 enemy aircraft (in about a third of the time). It was also flown by many aces from other countries fighting with Germany, notably the Finn Ilmari Juutilainen , the highest-scoring non-German ace. He scored 58 of his 94 confirmed victories with
2760-822: The Fifteenth Air Force . The first three members of the Eagle Squadrons were: All three had served together in No. 609 Squadron RAF , at RAF Middle Wallop . They had joined the RAF Volunteer Reserve (RAFVR) together (receiving consecutive service numbers), were posted to No. 609 Squadron RAF together, fought in the Battle of Britain together, and were transferred to 71 Squadron together in September 1940. The trio had also all been killed by
2880-732: The Fleet Air Arm and Army Air Corps are also called squadrons. In the latter they are company-equivalent units, divided into flights and grouped into regiments . In the Air Training Corps of the United Kingdom and many Commonwealth nations, a squadron is a group of cadets who parade regularly. In the United States Air Force , the squadron is the principal organizational unit. An aggregation of two or more USAF squadrons will be designated as
3000-582: The Heinkel He 51 , they were very critical of the Bf 109 at first. However, it soon became one of the frontrunners in the contest, as the Arado and Focke-Wulf entries, which were intended as "backup" programmes to safeguard against failure of the two favourites, proved to be completely outclassed. The Arado Ar 80, with its gull wing (replaced with a straight, tapered wing on the V3) and fixed, spatted undercarriage
3120-556: The Me 209 V1 , set a new record of 755.14 km/h (469.22 mph). For propaganda purposes, the Me ;209 V1 aircraft (possibly from its post-July 1938 first flight date) was given the designation Me 109R , with the later prefix , never used for wartime Bf 109 fighters. The Me 209 V1 was powered by the DB 601ARJ, producing 1,156 kW (1,550 hp), but capable of reaching 1,715 kW (2,300 hp). This world record for
3240-611: The Polish Air Force ( eskadra taktyczna , Polish for tactical squadron ) use the term squadron with its etymology originating from the naval and not the army meaning. The Czech Air Force and the Slovak Air Force use the generic term Letka as the squadron equivalent. The Turkish Air Force ( filo ) and the Hellenic Air Force ( μοιρα αεροπορικής ( mira aeroporikis ) - aviation squadron) use
3360-513: The attack on Pearl Harbor , most of the Eagle Squadron pilots wanted to immediately join the fight against Imperial Japan . Representatives from 71 and 121 Squadrons went to the American embassy in London and offered their services to the United States. The pilots from 71 Squadron decided they wanted to go to Singapore to fight the Japanese and a proposal was put to RAF Fighter Command , but it
3480-409: The 1,350 PS (993 kW; 1,332 hp) DB 601E (F-3, F-4). Considered by many as the high-water mark of Bf 109 development, the F series abandoned the wing cannon and concentrated all armament in the forward fuselage with a pair of synchronized machine guns above and a single 15 or 20 mm Motorkanone -mount cannon behind the engine, the latter firing between the cylinder banks and through
3600-423: The 109F-series onwards, guns were no longer carried inside the wings. Instead, the Bf 109F had a 20 mm gun firing through the propeller shaft. The change was disliked by leading fighter pilots such as Adolf Galland and Walter Oesau , but others such as Werner Mölders considered the single nose-mounted gun to compensate well for the loss of the two wing guns. Galland had his Bf 109F-2 field-modified with
3720-465: The 449 kW (610 PS; 602 hp) Jumo 210A engine. V3 followed, the first to be mounted with guns, but it did not fly until May 1936 due to a delay in procuring another Jumo 210 engine. After Luftwaffe acceptance trials were completed at their headquarters Erprobungsstelle ( E-Stelle ) military aviation test and development facility at Rechlin , the prototypes were moved to the subordinate E-Stelle Baltic seacoast facility at Travemünde for
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3840-507: The 4th Fighter Group under Chesley Peterson, then commanded the group from January to October 1944. The Eagle Squadrons Memorial is located on Grosvenor Square opposite a statue of Franklin D. Roosevelt . British composer Kenneth J. Alford wrote a march, "Eagle Squadron", in honour of the pilots of the squadron. It is also a "thank you" to the American pilots: small sections of the Star Spangled Banner can be heard in
3960-583: The Acceptance Commission, placing it at a distinct disadvantage. Because of its smaller, lighter airframe , the Bf 109 was 30 km/h (20 mph) faster than the He 112 in level flight, and superior in climbing and diving. The Commission ultimately ruled in favour of the Bf 109 because of the Messerschmitt test pilot's demonstration of the 109's capabilities during a series of spins, dives, flick rolls and tight turns, throughout which
4080-569: The Aviation Combat Element (ACE) of a Marine Expeditionary Unit (MEU), (12 MV-22s, 6 AH-1s, 4 CH-53s, 3 UH-1s, and 6 AV-8s). Other squadrons with a large number of Primary Aircraft Assigned (PAA) include Marine heavy helicopter squadrons (16 CH-53s), Marine light/attack helicopter squadrons (18 AH-1s and 9 UH-1s), and Marine attack squadrons (16 AV-8s). Although part of U.S. naval aviation, United States Coast Guard aviation units are centered on an air station or air facility versus
4200-494: The Bf 109 "the skinny one" (худо́й, khudoy ), for its sleek appearance compared, for example, to the more robust Fw 190. The names "Anton", "Berta", "Caesar", "Dora", "Emil", "Friedrich", "Gustav", and "Kurfürst" were derived from the variant's official letter designation (e.g. Bf 109G – "Gustav"), based on the German spelling alphabet of World War II, a practice that was also used for other German aircraft designs. The G-6 variant
4320-546: The Bf 109 into production. At the same time, Heinkel was instructed to radically redesign the He 112. The Messerschmitt 109 made its public debut during the 1936 Berlin Olympics when the V1 prototype was flown. As with the earlier Bf 108, the new design was based on Messerschmitt's "lightweight construction" principle, which aimed to minimise the number of separate parts in the aircraft. Examples of this could be found in
4440-567: The Bf 109. Pilots from Hungary, Romania, Bulgaria, Croatia, Slovakia and Italy also flew the fighter. Through constant development, the Bf 109 remained competitive with the latest Allied fighter aircraft until the end of the war. During 1933, the Technisches Amt (C-Amt), the technical department of the Reichsluftfahrtministerium (RLM) ("Reich Aviation Ministry"), concluded a series of research projects into
4560-475: The Bf 109 was the K series or Kurfürst , introduced in late 1944, powered by the DB 605D engine with up to 2,000 PS (1,471 kW; 1,973 hp). Though externally akin to the late production Bf 109G series, a large number of internal changes and aerodynamic improvements were incorporated that improved its effectiveness and remedied flaws, keeping it competitive with the latest Allied and Soviet fighters. The Bf 109's outstanding rate of climb
4680-566: The Bf 109F replaced it in the pure fighter role. (Eight Bf 109Es were assembled in Switzerland in 1946 by the Dornier-Werke, using licence-built airframes; a ninth airframe was assembled using spare parts.) The second big redesign during 1939–40 gave birth to the F series . The Friedrich had new wings, cooling system and fuselage aerodynamics, with the 1,175 PS (864 kW; 1,159 hp) DB 601N (F-1, F-2) or
4800-699: The British pilots taken prisoner, Flight Lieutenant Gordon Brettell , was later to be shot as one of the escapees in The Great Escape from Stalag Luft III in 1944. The Dieppe Raid was the only time all three Eagle Squadrons saw action operating together. No. 71 moved from Debden to Gravesend in mid-August in anticipation of the Dieppe action, while No. 121 operated from Southend. 133 Squadron moved with No. 401 Squadron RCAF from RAF Biggin Hill to Lympne on
4920-674: The CO as the next CO. In United States Marine Corps Aviation , in addition to flying units that are patterned in similar fashion to their U.S. Navy counterparts, the nomenclature "squadron" in the Marine Corps is also used to designate all battalion-equivalent, aviation support organizations. These squadrons include: wing headquarters, tactical air command, air control, air support, aviation logistics, wing support, and wing communications squadrons. In contrast to their USN counterparts, USMC flying squadrons and aviation support squadrons, while having
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5040-617: The Cold War the Swedish Army, Navy and Air Force each had their own integral helicopter arms. After the end of it in line with the mid-90s force reduction and reforms they were fused into the Swedish Armed Forces Helicopter Wing as a service, independent from the three main armed forces branches. The Helicopter Wing adopted the term skvadron from the former Swedish Army Aviation for its units, which
5160-528: The E series had a fuselage ordnance rack for fighter-bomber operations or provision for a long-range, standardized 300 litres (79 US gallons) drop-tank and used the DB ;601N engine of higher power output. The Bf 109E first saw service with the " Condor Legion " during the last phase of the Spanish Civil War and was the main variant from the beginning of World War II until mid-1941 when
5280-626: The Eagle Squadron pilots who transferred to the USAAF 4th Fighter Group were permitted to retain their RAF wings, reduced in size, on the opposite side of their uniform to their new USAAF pilots wings. Major General Carl Spaatz , head of the USAAF in Europe, wanted to spread the experience of the Eagles amongst various new US fighter squadrons, but the pilots of the three Eagle Squadrons wanted to stay together. The 71, 121, and 133 Squadrons were renamed by
5400-571: The Eagle Squadrons and became the youngest squadron commander in the RAF. When the Eagle Squadrons were transferred to the 4th Fighter Group, Peterson became the group's executive officer, succeeding to command of the group in April 1943, and becoming at 23 the youngest (at the time) colonel in the USAAF. Colonel Donald Blakeslee was a pilot in 121 and 133 Squadrons during 1942, making 120 sorties and claiming three aerial kills. He became deputy commander of
5520-515: The English south coast. 71 Squadron claimed a Ju 88 shot down, 121 an Fw 190, while 133 claimed four Fw 190s, a Ju 88 and a Dornier Do 217 . Six 'Eagle' Spitfires were lost, with one pilot taken prisoner and one killed. Through to the end of September 1942, the squadrons claimed to have destroyed 73½ German planes while 77 American and 5 British members were killed. 71 Squadron claimed 41 kills, 121 Squadron 18, and 133 Squadron 14½. When informed of
5640-550: The Flugmeeting airshow in Zürich under the command of Major Seidemann. They won in several categories: First prize in a speed race over a 202 km course, first prize in the class A category in the international Alpenrundflug for military aircraft, and victory in the international Patrouillenflug category. On 11 November 1937, the Bf 109 V13, D-IPKY flown by Messerschmitt's chief pilot Dr. Hermann Wurster, powered by
5760-616: The French Dewoitine D.520 , or the American Bell P-39 Airacobra , and dated back to World War I 's small run of SPAD S.XII moteur-canon , 37 mm cannon-armed fighters in France. When it was discovered in 1937 that the RAF was planning eight-gun batteries for its new Hawker Hurricane and Supermarine Spitfire fighters, it was decided that the Bf 109 should be more heavily armed. The problem
5880-654: The French escadrille . Messerschmitt Bf 109 The Messerschmitt Bf 109 is a German World War II fighter aircraft that was, along with the Focke-Wulf Fw 190 , the backbone of the Luftwaffe 's fighter force. The Bf 109 first saw operational service in 1937 during the Spanish Civil War . It was still in service at the end of World War II in 1945. It was one of the most advanced fighters when it first appeared, with an all-metal monocoque construction,
6000-506: The He 112 rejected in the design competition of 1936, designed and built the He 100 . On 6 June 1938, the He 100 V3, flown by Ernst Udet , captured the record with a speed of 634.7 km/h (394.4 mph). On 30 March 1939, test pilot Hans Dieterle surpassed that record, reaching 746.61 km/h (463.92 mph) with the He 100 V8. Messerschmitt, however, soon regained the lead when, on 26 April 1939, Flugkapitän Fritz Wendel , flying
6120-621: The Junkers Jumo 210 powered most of the pre-war variants. The most-produced Bf 109 model was the Bf 109G series (more than a third of all 109s built were the G-6 series, 12,000 units being manufactured from March 1943 until the end of the war). The initial production models of the A, B, C and D series were powered by the relatively low-powered, 670–700 PS (493–515 kW; 661–690 hp) Junkers Jumo 210 series engines. A few prototypes of these early aircraft were converted to use
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#17327766381586240-460: The L-shaped main fuel tank , which was sited partly under the cockpit floor and partly behind the rear cockpit bulkhead. Other, smaller panels gave easy access to the cooling system and electrical equipment. The engine was held in two large, forged, Elektron magnesium alloy Y-shaped legs, one per side straddling the engine block, which were cantilevered from the firewall. Each of the legs
6360-752: The Soviet Union in the Winter War . Charles Sweeny , a wealthy businessman living in London, persuaded the British Government to form an RAF squadron composed of Americans. (His uncle, also named Charles Sweeny , had been working along similar lines, recruiting American pilots to fight in France.) Sweeny's efforts were also coordinated in Canada by the World War I air ace Billy Bishop and
6480-667: The Swiss Army used the term company . In the modern German Air Force , a flying staffel is a battalion-equivalent, while a ground based support staffel is a company-equivalent. One such example are the air base defence units, which are squadrons ( German , plural: Staffeln ) formed into battalions. The ground based missile air defence units are also company- (in this case battery -)equivalent squadrons ( staffeln ). The Swedish Air Force adopted naval-like traditions in its formative years and for that historical reason calls its squadrons divisions (plural: divisioner ). They are grouped into air flotillas (plural: flygflottiljer ). During
6600-423: The USAAF also had to be negotiated, with most being given a rank equivalent to their RAF rank. For example, a flight lieutenant became a USAAF captain , while a wing commander became a lieutenant colonel . None of the Eagle Squadron pilots had previously served in the USAAF and did not have US pilot wings. As such, it was decided that they be awarded USAAF pilot wings upon their transfer. Due to their insistence,
6720-553: The USAAF as the 334th , 335th and 336th and transferred as complete units, retaining their Spitfires until P-47 Thunderbolts became available in January 1943. The 4th Fighter Group flew Spitfires until its conversion to P-47s was completed in April 1943. All three units had switched to the P-51 Mustang by the second half of March 1944. The 4th Fighter Wing , along with the 334th, 335th and 336th Fighter Squadrons, exist today as F-15E Strike Eagle units at Seymour Johnson Air Force Base in Goldsboro, North Carolina and are part of
6840-540: The USAAF. Typical were the fates of the eight original pilots in the third squadron: Four died during training, one was disqualified, two died in combat, and one became a prisoner of war. About 100 Eagle pilots had been killed, were missing or were prisoners. Negotiations regarding the transfer between the Eagle Squadrons, the USAAF and the RAF had to resolve a number of issues. The RAF wanted some compensation for losing three front-line squadrons in which they had heavily invested. Determining what rank each pilot would assume in
6960-607: The United States (e.g., United States Navy and United States Marine Corps ) typically contain both embedded administrative support functions and organizational level aircraft maintenance functions, plus all their associated personnel, as part of the total squadron manning. With few exceptions, oversight of the majority of these non-flying functions is assigned to the squadron's naval aviators and naval flight officers as their "ground job" in addition to their regular flying duties. With few exceptions, most U.S. Navy flying squadrons are commanded by aeronautically designated officers in
7080-400: The V4 had a single-piece, clear-view, sliding cockpit canopy and a more powerful Jumo 210Da engine with a modified exhaust system. However, the He 112 was also structurally complicated, being 18% heavier than the Bf 109, and it soon became clear that the thick wing, which spanned 12.6 m (41 ft 4 in) with an area of 23.2 m (249.7 ft ) on the first prototype (V1), was
7200-425: The addition of MW-50 water injection boost and high-performance superchargers , boosting engine output to 1,800–2,000 PS (1,324–1,471 kW; 1,775–1,973 hp). From early 1944, some G-2s, G-3s, G-4s and G-6s were converted to two-seat trainers, known as G-12s. An instructor's cockpit was added behind the original cockpit and both were covered by an elongated, glazed canopy. The final production version of
7320-402: The additional armament increased the fighter's potency as a bomber destroyer, it had an adverse effect on the handling qualities, reducing its performance in fighter-versus-fighter combat and accentuating the tendency of the fighter to swing pendulum-fashion in flight. Some of the projected 109K-series models, such as the K-6, were designed to carry 30 mm (1.18 in) MK 108 cannons in
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#17327766381587440-430: The air base where the F 10 wing is stationed (in Ängelholm) is commonly referred to as F 10 even though it is the name of the tactical unit. In general, this only applies as long as a wing is stationed at the base. Case in point is Uppsala-Ärna air base, an active military airport but since the tactical unit located there has been disbanded it is no longer referred to as F 16. These naming conventions have been inherited from
7560-406: The airfield located in the southernmost Augsburg neighborhood of Haunstetten , piloted by Hans-Dietrich "Bubi" Knoetzsch. After four months of flight testing, the aircraft was delivered in September to the Luftwaffe's central test centre at the Erprobungsstelle Rechlin to take part in the design competition. In 1935, the first Jumo engines became available, so V2 was completed in October using
7680-410: The artist Clayton Knight , who formed the Clayton Knight Committee , which by the time the United States entered the war, had processed and approved 6,700 applications from Americans to join the RCAF or RAF. Sweeny and his rich society contacts bore the cost (over $ 100,000) of processing and sending the men to the United Kingdom for training. The basic requirements for joining the Eagle Squadron were
7800-513: The battalion or brigade. In the U.S. Civil Air Patrol (CAP), a squadron is the basic administrative unit. As the official civilian auxiliary of the U.S. Air Force , CAP follows the USAF organizational model. An escadron is the equivalent unit in France's French Air and Space Force (Armée de l'air et de l'espace). It is normally subdivided into escadrilles of eight aircraft. The Spanish Air and Space Force and some air forces of other Spanish -speaking countries follow that tradition (with
7920-410: The cannon to be fitted with the ammunition feed forward of the spar, while the breech block projected rearward through the spar. A 60-round ammunition drum was placed in a space closer to the wing root causing a bulge in the underside. A small hatch was incorporated in the bulge to allow access for changing the drum. The entire weapon could be removed for servicing by removing a leading edge panel. From
8040-460: The case, as all three competing companies—Arado, Heinkel and BFW—received the development contract for the L.A. 1432/33 requirements at the same time in February 1934. A fourth company, Focke-Wulf, received a copy of the development contract only in September 1934. The powerplant was to be the new Junkers Jumo 210, but the proviso was made that it would be interchangeable with the more powerful, but less developed Daimler-Benz DB 600 powerplant. Each
8160-545: The claims (a Bf 109F and an Focke-Wulf Fw 190 ) and P/O W. Baker was credited with a Fw 190 destroyed. On 26 September 1942, 11 of the unit's 12 brand new Spitfire Mk IXs were lost on a mission over Morlaix while escorting USAAF Boeing B-17 Flying Fortresses in heavy cloud cover. Strong winds blew the unit further south than realised and, short of fuel, the squadron let down directly over Brest. Six pilots were shot down and taken prisoner, four were killed, one bailed out and evaded capture, while one crash landed in England. One of
8280-431: The company. All Messerschmitt aircraft that originated after that date, such as the Me 210 , were to carry the "Me" designation. Despite regulations by the RLM, wartime documents from Messerschmitt AG, RLM and Luftwaffe loss and strength reports continued to use both designations, sometimes even on the same page. All extant airframes bear the official "Bf 109" designation on their identification plates, including
8400-423: The engines available, a fighter would end up being slower than the bombers it was tasked with catching. A fighter was designed primarily for high-speed flight. A smaller wing area was optimal for achieving high speed, but low-speed flight would suffer, as the smaller wing would require more airflow to generate enough lift to maintain flight. To compensate for this, the Bf 109 included advanced high-lift devices on
8520-467: The final K-4 models. The aircraft was often referred to by the folk-designation, 'Me 109', particularly by the Allies. The aircraft was often nicknamed Messer by its operators and opponents alike; the name was not only an abbreviation of the manufacturer but also the German word for "knife". In Finland, the Bf 109 was known as Mersu , although this was originally (and still is) the Finnish nickname for Mercedes-Benz cars. Soviet aviators nicknamed
8640-598: The first American pilot to become a prisoner of war when he was shot down by a Bf 109 over the English Channel and picked up by a German patrol boat after swimming for an hour and a half. He was a prisoner in Stalag Luft III . The squadron's first confirmed victory came on 21 July 1941 when P/O William R. Dunn destroyed a Messerschmitt Bf 109 F over Lille . In August, 71 Squadron replaced its Hurricanes and Spitfire Mk IIs, before quickly re-equipping with
8760-447: The fuselage. It also allowed simplification of the wing structure, since it did not have to bear the loads imposed during takeoff or landing. The one major drawback of this landing gear arrangement was its narrow wheel track , making the aircraft unstable while on the ground. To increase stability, the legs were splayed outward somewhat, creating another problem in that the loads imposed during takeoff and landing were transferred up through
8880-506: The future of air combat. The result of the studies was four broad outlines for future aircraft: Rüstungsflugzeug III was intended to be a short range interceptor, replacing the Arado Ar 64 and Heinkel He 51 biplanes then in service. In late March 1933, the RLM published the tactical requirements for a single-seat fighter in the document L.A. 1432/33. The projected fighter needed to have
9000-446: The head-to-head portion of the competition. The aircraft participating in the trials were the Arado Ar 80 V3, the Focke-Wulf Fw 159 V3, the Heinkel He 112 V4 and the Bf 109 V2. The He 112 arrived first, in early February 1936, followed by the rest of the prototypes by the end of the month. Because most fighter pilots of the Luftwaffe were used to biplanes with open cockpits , low wing loading, light g-forces and easy handling like
9120-720: The latest Spitfire Mk Vs. The unit soon established a high reputation, and numerous air kill claims were made in RAF fighter sweeps over the continent during the summer and autumn of 1941. In December, the squadron was rested back at Martlesham Heath, before a move to Debden in May 1942. The second Eagle Squadron, No. 121 Squadron , was formed at RAF Kirton-in-Lindsey in May 1941, flying Hurricanes on coastal convoy escort duties. On 15 September 1941, it destroyed its first German aircraft. The Hurricanes were replaced with Spitfires, and Spitfire Mk Vs arrived in November 1941. The following month,
9240-467: The legs at an angle. The small rudder of the Bf 109 was relatively ineffective at controlling the strong swing created by the powerful slipstream of the propeller during the early portion of the takeoff roll, and this sideways drift created disproportionate loads on the wheel opposite to the swing. If the forces imposed were large enough, the pivot point broke and the landing gear leg would collapse outward into its bay. Experienced pilots reported that
9360-445: The loads being distributed through the structure via a series of strong-points. By concentrating the loads in the firewall, the structure of the Bf 109 could be made relatively light and uncomplicated. An advantage of this design was that the main landing gear, which retracted through an 85-degree angle, was attached to the fuselage , making it possible to completely remove the wings for servicing without additional equipment to support
9480-403: The low brass during the trio. Squadron (aviation) In most armed forces, two or more squadrons will form a group or a wing . Some military forces (including the United States Air Force , United States Space Force , French Air and Space Force , Royal Air Force , German Air Force , Royal Netherlands Air Force , Belgian Air Component and Republic of Singapore Air Force ) also use
9600-420: The lower radiator flap operated as part of the flap system), thereby increasing the effective flap area. When deployed, these devices effectively increased the wings' coefficient of lift. Fighters with liquid-cooled engines were vulnerable to hits in the cooling system. For this reason, on later Bf 109 F, G and K models, the two coolant radiators were equipped with a cut-off system. If one radiator leaked, it
9720-549: The more powerful DB 600. The first redesign came with the E series , including the naval variant, the Bf 109T (T standing for Träger , carrier ). The Bf 109E ( Emil ) introduced structural changes to accommodate the heavier and more powerful 1,100 PS (809 kW; 1,085 hp) Daimler-Benz DB 601 engine, heavier armament and increased fuel capacity. Partly due to its limited 300 kilometres (190 miles) combat radius on internal fuel alone, resulting from its 660 km (410 mi) range limit, later variants of
9840-740: The navy where Swedish military aviation has its roots. During the infant years of combat aviation in World War I and specifically with the trench stalemate at the front military aircraft partially took over the reconnaissance role from the cavalry. With that in mind the British Royal Flying Corps adopted the squadron nomenclature. After the fusion of the Royal Flying Corps and the Royal Naval Air Service into an independent Royal Air Force ,
9960-665: The new armed forces branch introduced its own system of ranks, with the commanders of squadrons becoming squadron leaders . The rapid sophistication in technology and combat tactics has led to increased requirements and qualifications of the officers in command positions and the commanders of RAF flying squadrons were upgraded in the post-World War II period from squadron leaders to wing commanders . Today RAF flying squadrons are battalion -equivalents, while combat and combat service support ground squadrons such as communications or administrative squadrons are company -equivalents and still usually commanded by squadron leaders. Flying units in
10080-421: The new pilots were sent for advanced operational training to an operational training unit (OTU) for two to four weeks to learn to fly Miles Master trainers, Hawker Hurricanes , and Supermarine Spitfires before being ostensibly commissioned as RAF officers and posted to front-line RAF fighter squadrons. The American pilots assigned to the Eagle Squadrons never renounced their US citizenship and although they wore
10200-488: The pilot was in complete control of the aircraft. In March, the RLM received news that the British Supermarine Spitfire had been ordered into production. It was felt that a quick decision was needed to get the winning design into production as soon as possible, so on 12 March, the RLM announced the results of the competition in a document entitled Bf 109 Priority Procurement , which ordered
10320-482: The propeller hub, itself covered by a more streamlined, half-elliptical shaped spinner that better matched the streamlining of the reshaped cowling, abandoning the smaller, conical spinner of the Emil subtype. The F-type also omitted the earlier stabilizer lift strut on either side of the tail. The improved aerodynamics were used by all later variants. Some Bf 109Fs were used late in the Battle of Britain in 1940 but
10440-480: The rank of commander . Exceptions are primarily the Fleet Replacement Squadrons (FRS), which are often, though not always, commanded by aeronautically designated captains . Commanding officers (COs) of U.S. Navy flying squadrons other than FRS units will be assisted by an executive officer (XO) of the same rank who functions as a second-in-command and who will eventually "fleet up" and relieve
10560-505: The rear spar. The wing profile was the NACA 2R1 14.2 at the root and NACA 2R1 11.35 at the tip, with a thickness to chord ratio of 14.2% at the root and 11.35% at the tip. Another major difference from competing designs was the higher wing-loading. While the R-IV contract called for a wing-loading of less than 100 kg/m , Messerschmitt felt this was unreasonable. With a low wing-loading and
10680-460: The spar and the leading edge. The tube channeled cooling air around the barrel and breech, exhausting from a slot at the rear of the wing. The installation was so cramped that parts of the MG 17's breech mechanism extended into an opening created in the flap structure. The much longer and heavier MG FF had to be mounted farther along the wing in an outer bay. A large hole was cut through the spar allowing
10800-529: The squadron became part of the famed RAF Biggin Hill Wing. On 31 July 1942, during a bomber escort mission to Abbeville, 133's Spitfires fought 52-kill Luftwaffe 'ace' Oblt. Rudolf Pflanz of 11./ JG 2 in combat; after shooting down one, Pflanz was himself shot down and killed in his Messerschmitt Bf 109 G-1 over Berck-sur-Mer , France. 133 Squadron claimed three destroyed and one probable, while losing three aircraft. P/O "Jessie" Taylor accounted for two of
10920-882: The squadron denomination originating from the army term. The Royal Norwegian Air Force use the skvadron term also originating from the army term. So does the Hungarian Air Force with repülőszázad ( Hungarian for aircraft squadron or flying squadron ; the cavalry company-equivalent term is század ). Many Eastern European countries use the term originating from the French word escadrille : Russian Air Force - Эскадрилья ( eskadril'ya ), Ukrainian Air Force - Ескадрилья ( eskadril'ya ), Belarusian Air Force - Эскадрыльля ( eskadryil'ya ), Romanian Air Force - escadrilă , Bulgarian Air Force - Ескадрила ( eskadrila ), Serbian Air Force - Ескадрила ( eskadrila ), Croatian Air Force - eskadrila . The Royal Danish Air Force uses eskadrille , also originating from
11040-425: The squadron level, such as missile squadrons, aircraft maintenance squadrons, intelligence squadrons, aerospace medicine squadrons, security forces squadrons, civil engineering squadrons and force support squadrons, as well as numerous other examples. USAF flying squadrons are typically commanded by an aeronautically rated officer in the rank of lieutenant colonel , although some particularly large squadrons, such as
11160-709: The squadron moved to RAF North Weald, replacing 71 Squadron. In 1942, its offensive activities over the English Channel included bomber escorts and fighter sweeps. The third and final Eagle Squadron, No. 133 Squadron , was formed at RAF Coltishall in July 1941, flying the Hurricane Mk IIb. A move to RAF Duxford followed in August, and re-equipment with the Spitfire Mk V occurred early in 1942. In May,
11280-407: The swing was easy to control, but some of the less-experienced pilots lost fighters on takeoff. Because of the large ground angle caused by the long legs, forward visibility while on the ground was very poor, a problem exacerbated by the sideways-opening canopy. This meant that pilots had to taxi in a sinuous fashion which also imposed stresses on the splayed undercarriage legs. Ground accidents were
11400-565: The term "squadron" for non-flying ground units (e.g. radar squadrons, missile squadrons, air defense squadrons, aircraft maintenance squadrons, security forces squadrons, civil engineering squadrons, range operations squadrons, range management squadrons, weather squadrons, medical squadrons, etc.). In World War I, the Imperial German Army used the term Squadron ( staffel ), whereas the Austro-Hungarian armed forces and
11520-430: The thousands who volunteered, only 244 Americans served with the Eagle Squadrons. Sixteen Britons also served as squadron and flight commanders. The first Eagle Squadron, No. 71 Squadron , was formed in September 1940 as part of the RAF's buildup during the Battle of Britain , and became operational for defensive duties on 5 February 1941. 71 Squadron commenced operations based at RAF Church Fenton in early 1941, before
11640-527: The time and embodied advanced structural design which was ahead of its contemporaries. In the early years of the war, the Bf 109 was the only single-engined fighter operated by the Luftwaffe, until the appearance of the Fw 190 . The Bf 109 remained in production from 1937 through 1945 in many different variants and sub-variants. The primary engines used were the Daimler-Benz DB 601 and DB 605 , though
11760-640: The time of the transfer of the Eagle Squadrons to the USAAF in 1942 (from the database of the Commonwealth War Graves Commission (CWGC): Phillip Leckrone , service number 84653, was another Battle of Britain veteran. He was also killed before the USAAF took charge of the Eagle Squadrons. Pilot Officer Leckrone was killed in January 1941, age 28. The lives of these four pilots have been described in The Few by Alex Kershaw. It
11880-481: The uniforms and held the rank titles of RAF officers, their dress and duty uniform tunics were modified with the Eagle Squadron patch, a white bald eagle flanked by the letters "ES" for Eagle Squadron. Three Eagle Squadrons were formed between September 1940 and July 1941. On 29 September 1942, they were turned over to the Eighth Air Force of the U.S. Army Air Forces and became the 4th Fighter Group . Of
12000-415: The use of two large, complex brackets which were fitted to the firewall. These brackets incorporated the lower engine mounts and landing gear pivot point into one unit. A large forging attached to the firewall housed the main spar pick-up points and carried most of the wing loads. Contemporary design practice was usually to have these main load-bearing structures mounted on different parts of the airframe, with
12120-608: The variant came into common use only in the first half of 1941. The G series , or Gustav , was introduced in mid-1942. Its initial variants (G-1 through G-4) differed only in minor details from the Bf 109F, most notably in the more powerful 1,475 PS (1,085 kW; 1,455 hp) DB 605 engine. Odd-numbered variants were built as high-altitude fighters with a pressurized cockpit and GM-1 boost, while even-numbered variants were un-pressurized, air superiority fighters and fighter-bombers. Long-range photo-reconnaissance variants also existed. The later G series (G-5 through G-14)
12240-458: The war years. Another example of the Bf 109's advanced design was the use of a single, I-beam main spar in the wing, positioned more aft than usual (to give enough room for the retracted wheel), thus forming a stiff D-shaped torsion box. Most aircraft of the era used two spars, near the front and rear edges of the wings, but the D-box was much stiffer torsionally , and eliminated the need for
12360-432: The wing to accommodate large ammunition boxes and access hatches, an unusual ammunition feed was devised whereby a continuous belt holding 500 rounds was fed along chutes out to the wing tip, around a roller, and then back along the wing, forward and beneath the gun breech, to the wing root, where it coursed around another roller and back to the weapon. The gun barrel was placed in a long, large-diameter tube located between
12480-498: The wings very thin and light. Two synchronized machine guns were mounted in the cowling, firing over the top of the engine and through the propeller arc. An alternative arrangement was also designed, consisting of a single autocannon firing through a blast tube between the cylinder banks of the engine, known as a Motorkanone mount in German. This was also the choice of armament layout on some contemporary monoplane fighters, such as
12600-483: The wings, including automatically opening leading edge slats , and fairly large camber-changing flaps on the trailing edge . The slats increased the lift of the wing considerably when deployed, greatly improving the horizontal maneuverability of the aircraft, as several Luftwaffe veterans, such as Erwin Leykauf, attest. Messerschmitt also included ailerons that "drooped" when the flaps were lowered (F series and later
12720-485: The wings. Originally the aircraft was designated as Bf 109 by the RLM, since the design was submitted by the Bayerische Flugzeugwerke (literally "Bavarian Aircraft Works", meaning "Bavarian Aircraft Factory"; sometimes abbreviated B.F.W., akin to BMW ) during 1935. The company was renamed Messerschmitt AG after 11 July 1938 when Erhard Milch finally allowed Willy Messerschmitt to acquire
12840-468: Was 215 kg. Installation of the under-wing gun pods was a simple task that could be quickly performed by the unit's armourers, and the gun pods imposed a reduction of speed of only 8 km/h (5.0 mph). By comparison, the installed weight of a similar armament of two 20 mm MG 151/20 cannon inside the wings of the Fw ;190A-4/U8 was 130 kg (287 lb), without ammunition. Although
12960-565: Was asked to deliver three prototypes for head-to-head testing in late 1934. Design work on Messerschmitt Project Number P.1034 began in March 1934, just three weeks after the development contract was awarded. The basic mock-up was completed by May, and a more detailed design mock-up was ready by January 1935. The RLM designated the design as type "Bf 109", the next available from a block of numbers assigned to BFW. The first prototype ( Versuchsflugzeug 1 or V1 ), with civilian registration D-IABI ,
13080-470: Was completed by May 1935, but the new German engines were not yet ready. To get the "R III" designs into the air, the RLM acquired four Rolls-Royce Kestrel VI engines by trading Rolls-Royce a Heinkel He 70 Blitz for use as an engine test-bed. Messerschmitt received two of these engines and adapted the engine mounts of V1 to take the V-12 engine upright. V1 made its maiden flight at the end of May 1935 at
13200-405: Was hydraulic, making it impossible to change pitch without engine running. If, God forbid, you turned off the engine at high pitch, it was impossible to turn the propeller and was very hard to start the engine again. Finally, the German ammo counter was also a great thing. Reflecting Messerschmitt's belief in low-weight, low-drag, simple monoplanes, the armament was placed in the fuselage. This kept
13320-477: Was nicknamed by Luftwaffe personnel as Die Beule ("the bump/bulge") because of the cowling's characteristic, bulging covers for the breeches of the 13 mm (.51 in) MG 131 machine guns , with the separate Beule covers eliminated by the time of the G-10 model's introduction of a subtly reshaped upper cowling. In July 1937, not long after the public debut of the new fighter, three Bf 109Bs took part in
13440-479: Was overweight and underpowered, and the design was abandoned after three prototypes had been built. The parasol winged Fw 159, potentially inspired by the same firm's earlier Focke-Wulf Fw 56 , was always considered by the E-Stelle Travemünde facility's staff to be a compromise between a biplane and an aerodynamically more efficient, low-wing monoplane. Although it had some advanced features, it used
13560-512: Was possible to fly on the second or to fly for at least five minutes with both closed. In 1943, Oberfeldwebel Edmund Roßmann got lost and landed behind Soviet lines. He agreed to show the Soviets how to service the plane. Soviet machine gun technician Viktor M. Sinaisky recalled: The Messer was a very well designed plane. First, it had an engine of an inverted type, so it could not be knocked out from below. It also had two water radiators with
13680-500: Was produced in a multitude of variants, with uprated armament and provision for kits of packaged, generally factory-installed parts known as Umrüst-Bausätze ("conversion kits", usually contracted to Umbau ) and adding a "/U" suffix to the aircraft designation when installed. Field kits known as Rüstsätze were also available for the G-series but those did not change the aircraft title. By early 1944, tactical requirements resulted in
13800-480: Was secured by two quick-release screw fittings on the firewall. All of the main pipe connections were colour-coded and grouped in one place, where possible, and electrical equipment plugged into junction boxes mounted on the firewall. The entire powerplant could be removed or replaced as a unit in a matter of minutes, a potential step to the eventual adoption of the unitized-powerplant Kraftei engine mounting concept used by many German combat aircraft designs, later in
13920-562: Was supplied to several states during World War II and served with several countries for many years after the war. The Bf 109 is the most produced fighter aircraft in history, with a total of 34,248 airframes produced from 1936 to April 1945. Some of the Bf 109 production took place in Nazi concentration camps through slave labor . The Bf 109 was flown by the three top-scoring fighter aces of all time, who claimed 928 victories among them while flying with Jagdgeschwader 52 , mainly on
14040-458: Was that the only place available to mount additional guns was in the wings. Only one spot was available in each wing, between the wheel well and slats, with room for only one gun, either a 7.92 mm MG 17 machine gun , a 20 mm MG FF or a 20 mm MG FF/M cannon. The first version of the Bf 109 to have wing guns was the C-1, which had one MG 17 in each wing. To avoid redesigning
14160-453: Was to be armed with either a single 20 mm MG C/30 engine-mounted cannon firing through the propeller hub as a Motorkanone , or two synchronized , engine cowl-mounted 7.92 mm (.312 in) MG 17 machine guns , or one lightweight engine-mounted 20 mm MG FF cannon with two 7.92 mm MG 17s. The MG C/30 was an airborne adaption of the 2 cm FlaK 30 anti-aircraft gun, which fired very powerful "Long Solothurn" ammunition, but
14280-495: Was turned down. On 29 September 1942, the three squadrons were officially transferred from the RAF to the Eighth Air Force of the United States Army Air Forces , with the American pilots becoming officers in the USAAF. The Eagle pilots had earned 12 Distinguished Flying Crosses and one Distinguished Service Order . Only four of the 34 original Eagle pilots were still present when the squadrons joined
14400-560: Was very heavy and had a low rate of fire. It was also specified that the wing loading should be kept below 100 kg/m . The performance was to be evaluated based on the fighter's level speed, rate of climb , and maneuverability, in that order. It has been suggested that Bayerische Flugzeugwerke (BFW) was originally not invited to participate in the competition due to personal animosity between Willy Messerschmitt and RLM director Erhard Milch ; however, recent research by Willy Radinger and Walter Shick indicates that this may not have been
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