31-610: (Redirected from F-2 ) For the Misplaced Pages F2 criterion for speedy deletion, see Misplaced Pages:Criteria for speedy deletion § F2 . [REDACTED] Look up F2 in Wiktionary, the free dictionary. F2 , F.II or similar may refer to: Science and mathematics [ edit ] F 2 , the chemical formula for fluorine F 2 {\displaystyle \mathbb {F} _{2}} or GF(2) , in mathematics,
62-501: A 1917 British fighter prototype Felixstowe F.2 , a 1917 British First World War flying boat Hunter F 2 , a 1953 Hawker Hunter fighter aircraft variant Lübeck-Travemünde F.2 , early German reconnaissance floatplane McDonnell F-2 Banshee , a carrier-based jet fighter aircraft of the 1950s Mitsubishi F-2 , a Japanese fighter aircraft, based on the F-16 Fighting Falcon RAF Tornado F2 ,
93-464: A 1941 British early turbojet engine Rail [ edit ] EMD F2 , a class of GM diesel freight locomotive built in 1946 H&BR Class F2 , a class of 0-6-2T steam locomotives of the Hull and Barnsley Railway Road [ edit ] Alta F2 , a 1952 British racing car DKW F2 , a 1930s German small car Marussia F2 , a Russian large luxury car Boat [ edit ] F2,
124-438: A Canadian geostationary communications satellite Nikon F2 , a professional SLR camera Transportation [ edit ] Aviation [ edit ] Fly Air , IATA designator F2, a Turkish private airline Fieseler F2 Tiger , a German single-seat aerobatic biplane Flanders F.2 , a 1911 British experimental single-seat monoplane aircraft Fokker F.II , a 1919 German early airliner Metropolitan-Vickers F.2 ,
155-600: A further increase in MTOW to 10,286 lb (4,666 kg). The wing spar of the Model 18 was fabricated by welding an assembly of tubular steel. The configuration of the tubes in combination with drilled holes from aftermarket STC modifications on some of these aircraft have allowed the spar to become susceptible to corrosion and cracking while in service. This prompted the FAA to issue an Airworthiness Directive in 1975, mandating
186-538: A lengthened nose to accommodate the tricycle nosewheel , and the Model 18's twin tailfins were replaced by a single fin. Production got an early boost when Nationalist China paid the company US$ 750,000 for six M18R light bombers, but by the time of the U.S. entry into World War II , only 39 Model 18s had been sold, of which 29 were for civilian customers. Work began in earnest on a variant specifically for training United States Army Air Forces (USAAF) military pilots, bombardiers, and navigators. The effort resulted in
217-569: A long-range, twin-engine swing-wing interceptor F 2 Hägernäs , a former Swedish Air Force wing Sea [ edit ] HMS F2 , an F class First World War submarine of the Royal Navy USS ; F-2 (SS-21) , a 1910s F-class submarine of the United States Navy 20 mm modèle F2 gun , a French naval gun Land [ edit ] F2 81mm Mortar , an Australian weapon FR F2 sniper rifle ,
248-507: A psychedelic drug F2-isoprostane , a compound formed in vivo from fatty acids F2 gene , present on human chromosome 11, encodes for thrombin Films [ edit ] F2: Fun and Frustration , a 2019 Indian Telugu language film starring Venkatesh and Varun Tej Technology [ edit ] F2 , a function key on a computer keyboard F2 or flat twin engine , a type of two-cylinder internal combustion engine Anik F2 ,
279-417: A variety of engines and has had a number of airframe modifications to increase gross weight and speed. At least one aircraft was modified to a 600-hp (447-kW) Pratt & Whitney R-1340 powerplant configuration. With the added weight of about 200 lb (91 kg) per engine, the concept of a Model 18 fitted with R-1340 engines was deemed unsatisfactory due to the weakest structural area of the aircraft being
310-1027: The Beech Aircraft Corporation of Wichita, Kansas . Continuously produced from 1937 to November 1969 (over 32 years, a world record at the time), over 9,000 were built, making it one of the world's most widely used light aircraft. Sold worldwide as a civilian executive, utility, cargo aircraft, and passenger airliner on tailwheels, nosewheels, skis, or floats, it was also used as a military aircraft . During and after World War II , over 4,500 Beech 18s were used in military service—as light transport, light bomber (for China), aircrew trainer (for bombing, navigation, and gunnery), photo-reconnaissance , and "mother ship" for target drones —including United States Army Air Forces (USAAF) C-45 Expeditor , AT-7 Navigator , and AT-11 Kansan ; and United States Navy (USN) UC-45J Navigator , SNB-1 Kansan , and others. In World War II , over 90% of USAAF bombardiers and navigators trained in these aircraft. In
341-505: The Sydney Ferries' services to Taronga Zoo Military [ edit ] Air [ edit ] Beechcraft F-2 Expeditor , an American twin engine reconnaissance aircraft Blackburn F.2 Lincock , a 1928 British single-seat lightweight fighter Bristol F.2 Fighter , a 1916 British two-seat biplane fighter and reconnaissance aircraft Dassault Mirage F2 , a 1960s French prototype two-seat attack fighter Fairey F.2 ,
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#1732779638927372-907: The Army AT-7. Further development led to the AT-11 navigation trainer, C-45 military transport, and F-2 (the "F" standing for "Fotorecon", short for "photographic reconnaissance" ). The United States Navy first adopted the Beech 18 as the JRB-1, equivalent to the F-2, followed by the JRB-2 transport; the JRB was initially named the Voyager , but this name did not enter common use, and JRBs were generally called Expeditors like their USAAF counterparts. The first JRB-1 obtained by
403-460: The FAA and other national airworthiness authorities, including regular removal of the spar strap to allow the strap to be checked for cracks and corrosion and the spar to be X-rayed . In Australia, the airworthiness authority has placed a life limit on the airframe, beyond which aircraft are not allowed to fly. Unless otherwise noted, the engines fitted are Pratt & Whitney R-985 radials. C-45Ds delivered between 1951 and 1952 As of 2012 ,
434-683: The Galois field of two elements F2, a category in the Fujita scale of tornado intensity F2 hybrid , a type of crossing in classical genetics F2 layer , a stratum of the Earth's ionosphere F-2 mycotoxin or zearalenone, a chemical produced by fungi NIST-F2 , an atomic clock Medicine [ edit ] F2 or Foundation Year 2 , part of the UK Foundation Programme for postgraduate medical practitioners F-2 (drug) ,
465-913: The JRB-6, the SNB-5, and SNB-5P. The Coast Guard retired its JRBs in 1956 and sold most of them as surplus in 1959, but one was retained by the United States Coast Guard Reserve until at least 1972. With the adoption of the 1962 United States Tri-Service aircraft designation system , the Navy's SNB-5 and SNB-5P became the TC-45J and RC-45J respectively, later becoming the UC-45J as their primary mission shifted from aircrew training to utility transport work. The C-45 flew in USAF service until 1963,
496-616: The Navy between 1943 and 1947; they were primarily used as utility transports, with one aircraft later converted for aerial mapping, and another used for proficiency flying. After the war, the USAAF became the United States Air Force (USAF), and the USAF Strategic Air Command had Model 18 variants (AT-11 Kansans, C-45 Expeditors, F-2 Expeditors, and UC-45 Expeditors) from 1946 until 1951. In 1950,
527-537: The Navy still had around 1,200 JRB and SNB aircraft in inventory. From 1951 to 1955, the USAF had many of its aircraft remanufactured with new fuselages, wing center sections, and undercarriages to take advantage of the improvements to the civil models since the end of World War II. Eventually, 900 aircraft were remanufactured to be similar to the then-current Model D18S and given new designations, constructor's numbers, and Air Force serial numbers. The USN had many of its surviving aircraft remanufactured as well, resulting in
558-722: The Navy, bureau number (BuNo) 09771 , was converted from the last civil Model 18 built before production was earmarked solely for the military for the duration of the war. The Navy subsequently obtained more Model 18s as the JRB-3 (C-45B), JRB-4 (UC-45F), SNB-1 Kansan (AT-11), SNB-2 (AT-7), and SNB-2C (AT-7C). Existing naval Twin Beeches were subsequently modified into the SNB-2H air ambulance, SNB-2P reconnaissance trainer, and SNB-3Q electronic countermeasures trainer. The United States Coast Guard acquired seven JRB-4 and JRB-5 aircraft from
589-583: The USN retired its last UC-45J in 1972, while the U.S. Army flew its C-45s until 1976. In later years, the military called these aircraft "bug smashers" in reference to their extensive use supplying mandatory flight hours for desk-bound aviators in the Pentagon. Beech 18s were used extensively by Air America during the Vietnam War ; initially more-or-less standard ex-military C-45 examples were used, but then
620-519: The Wikimedia System Administrators, please include the details below. Request from 172.68.168.226 via cp1108 cp1108, Varnish XID 219204008 Upstream caches: cp1108 int Error: 429, Too Many Requests at Thu, 28 Nov 2024 07:40:39 GMT Beechcraft F-2 Expeditor The Beechcraft Model 18 (or " Twin Beech ", as it is also known) is a 6- to 11-seat, twin-engined, low-wing, tailwheel light aircraft manufactured by
651-648: The airline had 12 aircraft modified by Conrad Conversions in 1963 and 1964 to increase performance and load-carrying capacity. The modified aircraft were known as Conrad Ten-Twos, as the maximum takeoff weight (MTOW) was increased to 10,200 lb (4,600 kg). The increase was achieved by several airframe modifications, including increased horizontal stabilizer angle-of-incidence, redesigned undercarriage doors, and aerodynamically improved wingtips. Air America then had Volpar convert 14 aircraft to turboprop power, fitted with Garrett AiResearch TPE-331 engines; modified aircraft were called Volpar Turbo Beeches, and also had
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#1732779638927682-489: The early postwar era, the Beech 18 was the pre-eminent "business aircraft" and "feeder airliner". Besides carrying passengers, its civilian uses have included aerial spraying , sterile insect release , fish stocking , dry-ice cloud seeding , aerial firefighting , air-mail delivery, ambulance service, numerous movie productions, skydiving , freight, weapon- and drug- smuggling , engine testbed, skywriting , banner towing , and stunt aircraft. Many are privately owned, around
713-615: The engine mounts. Nearly every airframe component has been modified. In 1955, deliveries of the Model E18S commenced; the E18S featured a fuselage that was extended 6 in (150 mm) higher for more headroom in the passenger cabin. All later Beech 18s (sometimes called Super 18s) featured this taller fuselage , and some earlier models (including one AT-11) have been modified to this larger fuselage. The Model H18, introduced in 1963, featured optional tricycle undercarriage . Unusually,
744-462: The fitting of a spar strap to some Model 18s. This led, in turn, to the retirement of a large number of STC-modified Model 18s when owners determined the aircraft were worth less than the cost of the modifications. The corrosion on unmodified spars was not a problem; it occurred due to the additional exposed surface area created through the STC hole-drilling process. Further requirements have been mandated by
775-413: The logistics company of the same name Formula Two , a type of open-wheel racing F2, the second formant See also [ edit ] 2F (disambiguation) FII (disambiguation) F3 (disambiguation) Fun and Frustration (disambiguation) , Indian film series, abbreviated F2 [REDACTED] Topics referred to by the same term This disambiguation page lists articles associated with
806-540: The same title formed as a letter–number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=F2&oldid=1173152884 " Category : Letter–number combination disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages F2">F2 Too Many Requests If you report this error to
837-486: The standard sniper rifle of the French military KMW F2 , a German modular wheeled armoured vehicle Other uses [ edit ] F2 (classification) , a wheelchair sport classification F-2 visa , a U.S. visa type for dependents of students F2Freestylers , British freestyle football duo also known as The F2 F2 Logistics , Filipino logistics company F2 Logistics Cargo Movers , volleyball team owned by
868-519: The undercarriage was developed for earlier-model aircraft under an STC by Volpar , and installed in H18s at the factory during manufacture. A total of 109 H18s was built with tricycle undercarriage, and another 240 earlier-model aircraft were modified with this. Construction of the Beechcraft Model 18 ended in 1970 with a final Model H18 going to Miyazaki Aviation College, Japan . Through
899-681: The world, with 240 in the U.S. still on the FAA Aircraft Registry in August 2017. By the late 1930s, Beechcraft management speculated that a demand would exist for a new design dubbed the Model 18 , which would have a military application, and increased the main production facilities. The design was mainly conventional for the time, including twin radial engines , all-metal semimonocoque construction with fabric-covered control surfaces, and tailwheel undercarriage . Less conventional
930-478: The years, 32 variations of the basic design had flown, over 200 improvement modification kits were developed, and almost 8,000 aircraft were built. In one case, the aircraft was modified to a triple tail, trigear, humpbacked configuration and appeared similar to a miniature Lockheed Constellation . Another distinctive conversion was carried out by Pacific Airmotive as the PacAero Tradewind. This featured
961-452: Was the twin-tailfin configuration. The Model 18 can be mistaken for the larger Lockheed Electra series of airliners, which closely resemble it. Early production aircraft were powered either by two 330-hp (250-kW) Jacobs L-6s or 350-hp (260-kW) Wright R-760Es. The 450-hp (336-kW) Pratt & Whitney R-985 became the definitive engine from the prewar C18S onwards. The Beech 18 prototype first flew on 15 January 1937. The aircraft has used