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80-510: A MEU normally is composed of Troop strength of a MEU is about 2,200 (normal and peacetime) to 4,400 (mobilization and wartime). A MEU is usually commanded by a colonel , and is deployed from amphibious assault ships . Currently, a MEU embarks personnel and equipment on the amphibious warfare ships of an expeditionary strike group (ESG), which also includes escort warships and submarines to protect them from air, surface, and submarine threats. For further protection and strong air support, an ESG

160-433: A Kentucky colonel ; Colonel Christian Umstead, US Marine, a Kentucky Colonel ; Colonel Tom Parker , Elvis Presley 's manager, who received the honor from a Louisiana governor; and Edward M. House , known as Colonel House, a Texas honorary colonel and adviser to President Woodrow Wilson . VTOL A vertical take-off and landing ( VTOL ) aircraft is one that can take off and land vertically without relying on

240-596: A headquarters section . The total strength is approximately 350 members, including Navy sailors. The aviation combat element ( ACE ) is a USMC composite squadron (reinforced) composed of a medium tiltrotor squadron augmented with detachments of heavy, light, and attack helicopters, one detachment of amphibious flight-deck- capable jets, and a Marine air control group detachment with tactical air command, air traffic control , direct air support , and anti-aircraft assets, as well as wing headquarters, wing communications, and wing support squadron personnel. Total strength

320-521: A runway . This classification can include a variety of types of aircraft including helicopters as well as thrust-vectoring fixed-wing aircraft and other hybrid aircraft with powered rotors such as cyclogyros/cyclocopters and gyrodynes . Some VTOL aircraft can operate in other modes as well, such as CTOL (conventional take-off & landing), STOL (short take-off & landing), or STOVL (short take-off & vertical landing). Others, such as some helicopters, can only operate as VTOL, due to

400-514: A "Command Chief") as principal senior NCO enlisted adviser. Colonels are also found leading at directorate and division levels on the Secretariat, Air Staff (United States) , MAJCOM , or Numbered Air Force staff. A Space Force colonel typically commands a delta . In the modern armed forces, the colonel's eagle is worn facing forward with head and beak pointing towards the wearer's front. Of all U.S. military commissioned officer rank, only

480-752: A Confederate general , stating that he would only accept permanent promotion when the Confederacy had defeated the U.S. and achieved its independence. After the end of the Civil War, the rank of colonel again became rare as the forces of the United States Army downsized and became extremely small. However, many U.S. colonels were appointed in the volunteers during the Spanish–American War , prominent among them Theodore Roosevelt and David Grant Colson . World War I and World War II saw

560-631: A VTOL (helicopter) show up in Leonardo da Vinci 's sketch book. Manned VTOL aircraft, in the form of primitive helicopters, first flew in 1907, but would take until after World War Two to be perfected. In addition to helicopter development, many approaches have been tried to develop practical aircraft with vertical take-off and landing capabilities, including Henry Berliner 's 1922–1925 experimental horizontal rotor fixed wing aircraft, and Nikola Tesla 's 1928 patent, and George Lehberger's 1930 patent for relatively impractical VTOL fixed wing airplanes with

640-488: A cohesive, flexible, and powerful force. The work-up period includes training in many combat and noncombat skills, to include: Exercises conducted during the work-up period can include: Deployment : Following the work-up period, the MEU deploys for six months in support of geographic combatant commanders . During this time, the MEU is a forward-deployed, self-sustaining force that combatant commanders can direct to accomplish

720-543: A conventional wing and tilts the whole assembly to transition between vertical and horizontal flight. A tail-sitter sits vertically on its tail for takeoff and landing, then tilts the whole aircraft forward for horizontal flight. Thrust vectoring is a technique used for jet and rocket engines, where the direction of the engine exhaust is varied. In VTOL, the exhaust can be varied between vertical and horizontal thrust. Similar to tiltrotor concept, but with turbojet or turbofan engines instead of ones with propellers. A lift jet

800-783: A followup story was part of the April 2006 issue that mentioned "the fuel-consumption and stability problems that plagued earlier plane/copter." Retired from the British Royal Navy in 2006, the Indian Navy continued to operate Sea Harriers until 2016, mainly from its aircraft carrier INS  Viraat . The latest version of the Harrier, the BAE Harrier II , was retired in December 2010 after being operated by

880-584: A helicopter, then transitions to fixed-wing lift in forward flight. Examples of this include the Bell Boeing V-22 Osprey A tiltrotor or proprotor tilts its propellers or rotors vertically for VTOL and then tilts them forwards for horizontal wing-borne flight, while the main wing remains fixed in place. Similar to tiltrotor concept, but with ducted fans . As it can be seen in the Bell X-22 . A tiltwing has its propellers or rotors fixed to

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960-439: A helicopter. The rotors would become stationary in mid-flight, and function as wings, providing lift in addition to the static wings. Boeing X-50 is a Canard Rotor/Wing prototype that utilizes a similar concept. A different British VTOL project was the gyrodyne , where a rotor is powered during take-off and landing but which then freewheels during flight, with separate propulsion engines providing forward thrust. Starting with

1040-411: A lieutenant colonel as deputy commander, a major as executive officer , and a command sergeant major as a senior non-commissioned officer (NCO) advisor. An Air Force colonel typically commands a wing consisting of 1,000 to 4,000+ airmen with another colonel as the vice commander, four other colonels as group commanders , which are the major components of wings, and a Chief Master Sergeant (i.e.,

1120-518: A pay grade of "O-5". Officers in pay grade O-6 visiting or on temporary assignment to other installations are also accorded "Distinguished Visitor" (DV) status for lodging and other appropriate protocol honors. When flying on military aircraft as either crew or passenger, they are also accorded "Code" status as a "Code 7" in accordance with Department of Defense Flight Information Publication General Planning (DoD FLIP GP). Most Army colonels have attended or otherwise completed via seminar or correspondence

1200-489: A proposal in 1948 for an aircraft capable of vertical takeoff and landing (VTOL) aboard platforms mounted on the afterdecks of conventional ships. Both Convair and Lockheed competed for the contract but in 1950, the requirement was revised, with a call for a research aircraft capable of eventually evolving into a VTOL ship-based convoy escort fighter. At the end of 1958, the French SNECMA Coléoptère ,

1280-645: A result of passage of the Defense Officer Personnel Management Act . Contemporary U.S. colonels usually command Army infantry, artillery, armor, aviation, special forces, or other types of brigades or regiments as well as large installations; USMC regiments , Marine Expeditionary Units , Marine Aircraft Groups, or installations such as Marine Corps Bases or Marine Corps Air Stations; USAF groups or wings ; and USSF deltas . An Army colonel typically commands brigade-sized units (4,000 to 6,000 soldiers), with another colonel or

1360-518: A short time later. The Harrier is usually flown in STOVL mode, which enables it to carry a higher fuel or weapon load over a given distance. In V/STOL the VTOL aircraft moves horizontally along the runway before taking off using vertical thrust. This gives aerodynamic lift as well as thrust lift and permits taking off with heavier loads and is more efficient. When landing the aircraft is much lighter due to

1440-543: A successful landing after boosting 11 commercial satellites to low Earth orbit on Falcon 9 Flight 20 . These demonstrations opened the way for substantial reductions in space flight costs. The helicopter's form of VTOL allows it to take off and land vertically, to hover, and to fly forwards, backwards, and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft would usually not be able to take off or land. The capability to efficiently hover for extended periods of time

1520-406: A tailsitter annular wing design, performed its maiden flight. However the sole prototype was destroyed on its ninth flight in 1959, and financing was never sourced for a second prototype. Another more influential early functional contribution to VTOL was Rolls-Royce 's Thrust Measuring Rig ("flying bedstead") of 1953. This led to the first VTOL engines as used in the first British VTOL aircraft,

1600-561: A tilting engines. In the late 1930s British aircraft designer Leslie Everett Baynes was issued a patent for the Baynes Heliplane , another tilt rotor aircraft. In 1941 German designer Heinrich Focke 's began work on the Focke-Achgelis Fa 269 , which had two rotors that tilted downward for vertical takeoff, but wartime bombing halted development. In May 1951, both Lockheed and Convair were awarded contracts in

1680-535: A variety of special operations and conventional missions. The missions may include: West Coast MEUs fall under I Marine Expeditionary Force , and their main area of operations includes the western Pacific and Indian oceans (to include the Persian Gulf ). East Coast MEUs fall under II Marine Expeditionary Force and maintain presence in the Atlantic Ocean and Mediterranean Sea . The 31st MEU

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1760-490: A vertical take-off research aircraft issued in September 1953. The design was accepted by the ministry and a contract was placed for two aircraft (XG900 and XG905) to meet Specification ER.143D dated 15 October 1954. The SC.1 was also equipped with the first "fly-by-wire" control system for a VTOL aircraft. This permitted three modes of control of the aerodynamic surfaces or the nozzle controls. The Republic Aviation AP-100

1840-532: A war college or a senior staff college equivalent to study joint warfare and war itself. It is possible to make Colonel without war college if the board file is as strong or stronger than a war college graduate. Most Army colonels receive postgraduate level senior joint professional military education (JPME) at the Army War College in Carlisle, Pennsylvania prior to promotion. The 2009 graduating class

1920-469: Is a split between the services on which mirror image of the eagle should be worn. In the United States Army, United States Air Force, and United States Space Force, the eagle is always worn with "the head of the eagle to the wearer's right or to the front," with the olive branch clutched in the eagle's right (or forward) hand talons (see Department of the Army Pamphlet 670-1, paragraph 21-6 [a][1]). In

2000-647: Is about 200 members, including Navy sailors. Recently, MEUs have been deployed within an expeditionary strike group (ESG) in the Mediterranean , the Western Pacific , and periodically, the Atlantic and Indian Oceans . An ESG is typically composed of three amphibious ships that embark the necessary troops and equipment and are escorted by a guided missile cruiser (CG) and guided missile destroyers (DDG) and submarine ( SSN ) support. Before

2080-524: Is an auxiliary jet engine used to provide lift for VTOL operation, but may be shut down for normal wing-borne flight. The Yak-38 is the only production aircraft to employ lift jets. Lift fan is an aircraft configuration in which lifting fans are located in large holes in an otherwise conventional fixed wing or fuselage. It is used for V/STOL operation. The aircraft takes off using the fans to provide lift, then transitions to fixed-wing lift in forward flight. Several experimental craft have been flown, but only

2160-867: Is approximately 600 troops. The logistics combat element ( LCE ) (formerly combat service support element or CSSE ) is based on the MEU combat logistics battalion (CLB) (formerly MEU service support group or MSSG ). It contains all the logistics specialists and equipment necessary for the MEU to support and sustain itself for up to 15 days in an austere expeditionary environment. It includes service support (postal and disbursing), medical , dental , intermediate maintenance, intermediate supply (consumables and secondary reparable), transportation (distribution and landing support), explosive ordnance disposal , utilities production and distribution, bulk fuels, internal communications, and various other technical experts. It consists of approximately 300 members, including Navy sailors. The command element ( CE ), which includes

2240-672: Is designed to perform missions like a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft. The FAA classifies the Osprey as a model of powered lift aircraft. Attempts were made in the 1960s to develop a commercial passenger aircraft with VTOL capability. The Hawker Siddeley Inter-City Vertical-Lift proposal had two rows of lifting fans on either side. However, none of these aircraft made it to production after they were dismissed as too heavy and expensive to operate. In 2018 Opener Aero demonstrated an electrically powered fixed-wing VTOL aircraft,

2320-527: Is due to the helicopter's relatively long, and hence efficient rotor blades, and allows a helicopter to accomplish tasks that fixed-wing aircraft and other forms of vertical takeoff and landing aircraft could not perform at least as well until 2011 . On the other hand, the long rotor blades restrict the maximum speed to about 250 miles per hour (400 km/h) of at least conventional helicopters, as retreating blade stall causes lateral instability. Autogyros are also known as gyroplanes or gyrocopters. The rotor

2400-983: Is equipped with: Many types of equipment are, or will soon, undergo a transitory phase as they are replaced. Some examples include the Amphibious Combat Vehicle replacing the AAV-7, the F-35 Lightning II replacing the AV-8B Harrier, and the CH-53K King Stallion replacing the CH-53E . The ground combat element ( GCE ) is based on the battalion landing team ( BLT ), an infantry battalion reinforced with an artillery battery , amphibious assault vehicle platoon, combat engineer platoon, light armored reconnaissance company, reconnaissance platoon, and other units as

2480-406: Is often deployed along with one or more carrier strike groups . The MEU is unique in that its air and ground combat elements are combined with a logistics combat element under one commander; other services do not unite the command of air and ground forces until much higher command levels. The MEU's ground combat element also combines artillery , light armor , and tanks at a much lower level than

Marine expeditionary unit - Misplaced Pages Continue

2560-560: Is the only permanently forward-deployed MEU, maintaining a presence in the Pacific Ocean at all times as part of III Marine Expeditionary Force . Colonel (United States) A colonel ( / ˈ k ɜːr n əl / ) in the United States Army , Marine Corps , Air Force and Space Force , is the most senior field-grade military officer rank , immediately above the rank of lieutenant colonel and just below

2640-421: Is unpowered and rotates freely in the airflow as the craft travels forward, so the craft needs a conventional powerplant to provide thrust. An autogyro is not intrinsically capable of VTOL: for VTO the rotor must be spun up to speed by an auxiliary drive, and vertical landing requires precise control of rotor momentum and pitch. Gyrodynes are also known as compound helicopters or compound gyroplanes. A gyrodyne has

2720-511: The Blackfly , which the manufacturer claims is the world's first ultralight fixed-wing, all-electric, vertical take-off and landing aircraft. In the 21st century, unmanned drones are becoming increasingly commonplace. Many of these have VTOL capability, especially the quadcopter type. In 1947, Ryan X-13 Vertijet , a tailsitter design, was ordered by the US Navy, who then further issued

2800-453: The F-35 Lightning II entered into production. Aircraft in which VTOL is achieved by exploiting the Coandă effect are capable of redirecting air much like thrust vectoring , but rather than routing airflow through a duct, the airflow is simply routed along an existing surface, which is usually the body of the craft allowing less material and weight. The Avro Canada VZ-9 Avrocar , or simply

2880-476: The Fairey Gyrodyne , this type of aircraft later evolved into the much larger twin-engined Fairey Rotodyne , that used tipjets to power the rotor on take-off and landing but which then used two Napier Eland turboprops driving conventional propellers mounted on substantial wings to provide propulsion, the wings serving to unload the rotor during horizontal flight. The Rotodyne was developed to combine

2960-645: The Focke-Achgelis Fa 269 of the mid-1940s and the Centro Técnico Aeroespacial "Convertiplano" of the 1950s reached testing or mock-up stages, the Bell-Boeing V-22 Osprey is considered the world's first production tiltrotor aircraft. It has one three-bladed proprotor , turboprop engine, and transmission nacelle mounted on each wingtip. The Osprey is a multi-mission aircraft with both a vertical takeoff and landing (VTOL) and short takeoff and landing capability ( STOL ). It

3040-750: The Hawker P.1127 , which became subsequently the Kestrel and then entered production as the Hawker Siddeley Harrier , though the supersonic Hawker Siddeley P.1154 was canceled in 1965. The French in competition with the P.1154 had developed a version of the Dassault Mirage III capable of attaining Mach 1. The Dassault Mirage IIIV achieved transition from vertical to horizontal flight in March 1966, reaching Mach 1.3 in level flight

3120-557: The National Defense University or one of the other U.S. military services. Some people known as "colonels" are actually recipients of honorary colonel ranks from a state governor and are not officers of the U.S. military. In the 19th century, the honorary colonels were military appointments and they still are nominally appointed to a governor's staff, but without military rights or duties. Examples of honorary colonels include Colonel Harland Sanders of KFC fame,

3200-460: The Short SC.1 (1957), Short Brothers and Harland, Belfast which used four vertical lift engines with a horizontal one for forward thrust. The Short SC.1 was the first British fixed-wing VTOL aircraft. The SC.1 was designed to study the problems with VTOL flight and the transition to and from forward flight. The SC.1 was designed to meet a Ministry of Supply (MoS) request for tender (ER.143T) for

3280-529: The lunar module (LEM), which had to rely on a reaction engine to land on the Moon. The idea of using the same engine for vertical and horizontal flight by altering the path of the thrust was conceived by Michel Wibault . It led to the Bristol Siddeley Pegasus engine which used four rotating nozzles to direct thrust over a range of angles. This was developed side by side with an airframe,

Marine expeditionary unit - Misplaced Pages Continue

3360-585: The 1960s and early 1970s, Germany planned three different VTOL aircraft. One used the Lockheed F-104 Starfighter as a basis for research for a V/STOL aircraft. Although two models (X1 and X2) were built, the project was canceled due to high costs and political problems as well as changed needs in the German Air Force and NATO. The EWR VJ 101 C did perform free VTOL take-offs and landings, as well as test flights beyond mach 1 in

3440-570: The AWC distance learning program. Still other USAF colonels a JPME program via the National Defense University (i.e., National War College , Eisenhower School ) or the program of another service (e.g., Army War College, College of Naval Warfare at the Naval War College , Marine Corps War College ). The AWC resident program includes participation by officers from various other branches of the U.S. armed forces and Allied nations. Completion of

3520-684: The AWC or an equivalent program is a de facto requirement for promotion to colonel in the USAF, to include the Air Force Reserve and the Air National Guard . Marine colonels may graduate from the Marine Corps War College or, like all other branches, may receive credit via non-resident attendance at another installation, via correspondence, or will be graduates of an equivalent senior JPME program sponsored by

3600-1262: The British Royal Air Force and Royal Navy. The United States Marine Corps and the Italian and Spanish navies all continue to use the AV-8B Harrier II , an American-British variant. Replacing the Harrier II/AV-8B in the air arms of the US and UK is the STOVL variant of the Lockheed Martin F-35 Lightning II , the F-35B. SpaceX developed several prototypes of Falcon 9 to validate various low-altitude, low-velocity engineering aspects of its reusable launch system development program . The first prototype, Grasshopper, made eight successful test flights in 2012–2013. It made its eighth, and final, test flight on October 7, 2013, flying to an altitude of 744 metres (2,441 ft) before making its eighth successful VTVL landing. This

3680-605: The British Army in the North American colonies. Upon the outbreak of the American Revolutionary War , colonial legislatures would grant commissions to men to raise a regiment and serve as its colonel. Thus, the first U.S. colonels were usually respected men with ties in local communities and active in politics. With the post-war reduction of the U.S. Army, the rank of colonel disappeared, and

3760-457: The ESG, MEUs were typically deployed as part of an amphibious ready group (ARG). MEUs maintain their subordinate elements in fifteen month cycles: nine months stateside (with six set aside for training), and a six-month deployment aboard ship. These cycles ensure that at least two of the seven MEUs are deployed forward at any given time. Interim or buildup period : Upon completion of a deployment,

3840-423: The MEU commander and his supporting staff , provides command and control over the other three elements. It includes specialized detachments for air naval gunfire liaison , reconnaissance , surveillance , specialized communications, radio reconnaissance ( SIGINT ), electronic warfare , Marine Corps Intelligence and counterintelligence , law enforcement , and public affairs missions. The overall strength

3920-468: The MEU remains "special operations capable" for approximately one month, prepared to respond to events around the world. They are not, however, considered a special operations unit by the Department of Defense. The MEU then releases its major subordinate elements (MSEs), retaining only its command element. This period provides the command element a chance to rotate select personnel and begin planning for

4000-626: The United States Navy, United States Marine Corps, United States Coast Guard, NOAA, and the PHSCC, the eagle is worn with "the head facing forward" on the wearer's right side of the garrison cover (see Marine Corps Order P1020.34G, Uniform Regulation, paragraph 4005d[1]). Since respective service's officer insignia is worn on the left side and the rank insignia is worn on the right hand side of the Marine, Navy, Coast Guard and NOAA garrison caps,

4080-520: The VZ-9, was a Canadian VTOL aircraft developed by Avro Aircraft Ltd. which utilizes this phenomenon by blowing air into a central area, then it is directed down over the top surface, which is parabolic and resembles a bowed flying saucer . Due to the Coandă effect, the airflow is attracted to the nearest surface and continues to move along that surface despite the change in the surface's direction away from

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4160-473: The addition of newly assigned MSEs and “work-up” training. When the MSEs are received, the MEU begins six months of intense pre-deployment training. Work-up period : Training during the six-month work-up period is often referred to as "crawl, walk, run". Marines and sailors progress through curriculum and exercises that teach individual, small unit, and unit tactics while integrating the separate MEU elements into

4240-627: The aircraft lacking landing gear that can handle taxiing . VTOL is a subset of V/STOL (vertical or short take-off & landing). Some lighter-than-air aircraft also qualify as VTOL aircraft, as they can hover, takeoff and land with vertical approach/departure profiles. Electric vertical takeoff and landing aircraft, or eVTOLs , are being developed along with more autonomous flight control technologies and mobility-as-a-service (MaaS) to enable advanced air mobility (AAM), that could include on-demand air taxi services, regional air mobility, freight delivery, and personal air vehicles (PAVs). Besides

4320-563: The airflow. The craft is designed to direct the airflow downward to provide lift. Jetoptera announced a proposed line of aircraft based on what it called fluidic propulsion that employs the Coandă effect. The company claims an Oswald efficiency number of 1.45 for its boxwing design. Other claims include increased efficiency, 30% lower weight, reduced complexity, as much as 25 dBA lower (and atonal) noise, shorter wings, and scalability. Jetoptera says its approach yields thrust augmentation ratios exceeding 2.0 and 50% fuel savings when compared to

4400-627: The attempt to design, construct, and test two experimental VTOL fighters. Lockheed produced the XFV , and Convair producing the Convair XFY Pogo . Both experimental programs proceeded to flight status and completed test flights 1954–1955, when the contracts were cancelled. Similarly, the Ryan X-13 Vertijet flew a series of test flights between 1955 and 1957, but also suffered the same fate. The use of vertical fans driven by engines

4480-407: The authorization to directly commission new officers up to the rank of colonel. The pay grade for colonel is O-6. When worn alone, the insignia of rank seen at right is worn centered on headgear and fatigue uniforms. When worn in pairs, the insignia is worn on the officer's left side while a mirror-image reverse version is worn on the right side, such that both of the eagles' heads face forward, to

4560-477: The colonel's eagle has a distinct right and left insignia. All other commissioned officer rank insignia can be worn on either the right or left side. Colonels are sometimes referred to (but not addressed as) full colonels , bird colonels , or full bird colonels because lieutenant colonels are also referred to and addressed in correspondence as "colonel". Referring to an "O-6", a colonel's pay grade, also may differentiate colonels and lieutenant colonels , who have

4640-709: The development of the Panavia Tornado . The Yakovlev Yak-38 was a Soviet Navy VTOL aircraft intended for use aboard their light carriers, cargoships, and capital ships. It was developed from the Yakovlev Yak-36 experimental aircraft in the 1970s. Before the Soviet Union broke up, a supersonic VTOL aircraft was developed as the Yak-38's successor, the Yak-141 , which never went into production. In

4720-533: The eagle is facing to the eagle's left with the olive branch clutched in the eagle's left hand talons, which is a mirror opposite to the wear of the single eagle for Army, Air Force, and Space Force officers. The U.S. rank of colonel is a direct successor to the same rank in the British Army . The first colonels in the United States were appointed from colonial militias maintained as reserves to

4800-495: The efficiency of a fixed-wing aircraft at cruise with the VTOL capability of a helicopter to provide short haul airliner service from city centres to airports. The CL-84 Dynavert was a Canadian V/STOL turbine tilt-wing monoplane designed and manufactured by Canadair between 1964 and 1972. The Canadian government ordered three updated CL-84s for military evaluation in 1968, designated the CL-84-1. From 1972 to 1974, this version

4880-471: The insignia lacks the scroll in the eagle's mouth and the rosette above its head. On the Great Seal, the olive branch is always clutched in the eagle's right-side talons, while the bundle of arrows is always clutched in the left-side talons. The head of the eagle faces towards the olive branch, rather than the arrows, advocating peace rather than war. As a result, the head of the eagle always faces towards

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4960-524: The largest numbers of colonels ever appointed in the U.S. military. This was mostly due to the temporary ranks of the National Army and the Army of the United States , where those who would normally hold the rank of Captain in the peacetime Regular Army were thrust into the rank of colonel during these two wars. The Military Promotion System was revised and standardized for all the services in 1980 as

5040-418: The loss of propellant weight and a controlled vertical landing is possible. An important aspect of Harrier STOL operations aboard naval carriers is the "ski jump" raised forward deck, which gives the craft additional vertical momentum at takeoff. The March 1981 cover of Popular Science showed three illustrations for its "Tilt-engine V/STOL - speeds like a plane, lands like a copter" front-page feature story.;

5120-700: The mid- and late 60s. One of the test-aircraft is preserved in the Deutsches Museum in Munich, Germany, another outside Friedrichshafen Airport. The others were the VFW-Fokker VAK 191B light fighter and reconnaissance aircraft, and the Dornier Do 31 E-3 (troop) transport. The LLRV was a spacecraft simulator for the Apollo lunar lander. It was designed to mimic the flight characteristics of

5200-462: The mission and circumstances require. The total strength is approximately 1,100 members, including Navy sailors. The Maritime Special Purpose Force is a subgroup of the MEU, formed for low-profile missions. The MSPF force consists of four elements: an assault platoon (a direct action platoon augmented from Force Recon ), a security platoon (a selected infantry platoon from the battalion landing team), reconnaissance and surveillance assets , and

5280-590: The powered rotor of a helicopter with a separate forward thrust system of an autogyro. Apart from take-off and landing the rotor may be unpowered and autorotate. Designs may also include stub wings for added lift. A cyclogyro or cyclocopter has a rotary wing whose axis and surfaces remain sideways across the airflow, as with a conventional wing. There are number of designs for achieving power lift, and some designs may use more than one. There are many experimental designs that have unique design features to achieve powered lift. A convertiplane takes off under rotor lift like

5360-399: The rank of brigadier general . Colonel is equivalent to the naval rank of captain in the other uniformed services . By law, an officer previously required at least 22 years of cumulative service and a minimum of three years as a lieutenant colonel before being promoted to colonel. With the signing of the National Defense Authorization Act of 2019 (NDAA 2019), military services now have

5440-409: The regiments were known by the title "Colonel of Volunteers", in contrast to Regular Army colonels who held permanent commissions. During the Civil War, the Confederate army maintained a unique insignia for colonel, which comprised three yellow stars worn on the collar of a uniform. Robert E. Lee wore this insignia due to his former rank in the United States Army and refused to wear the insignia of

5520-714: The ubiquitous helicopters, there are currently two types of VTOL aircraft in military service: tiltrotor aircraft, such as the Bell Boeing V-22 Osprey , and thrust-vectoring airplanes, such as the Harrier family and new F-35B Lightning II Joint Strike Fighter (JSF). In the civilian sector currently only helicopters are in general use (some other types of commercial VTOL aircraft have been proposed and are under development as of 2017 ). Generally speaking, VTOL aircraft capable of STOVL use it wherever possible, since it typically significantly increases takeoff weight, range or payload compared to pure VTOL. The idea of vertical flight has been around for thousands of years, and sketches for

5600-431: The viewer's left. Some colonel eagles from the 1920s to the 1950s faced the arrows, though this is no longer done. The full-sized colonel eagle is 3/4 inches tall and 1 + 1 ⁄ 2 inches in diameter from the tips of each wing. However, when worn as a single insignia with no matching pair, such as on the patrol cap , garrison cap / flight cap , or the front of the Army, Air Force, or Space Force OCP uniform, there

5680-413: The war's conclusion. A number of other colonels were appointed by brevet – an honorary promotion usually for distinguished service in combat. The American Civil War saw a large influx of colonels as the rank was commonly held in both the Confederate army and Union Army by those who commanded a regiment. Since most U.S. regiments were state formations and were quickly raised, the colonels in command of

5760-483: The way for follow-up forces. This self-sustainment allows more flexibility in disposition and operations of forces, and allows the MEU to initiate operations sooner and let support catch up later, without having to wait for external logistical support to begin a mission. Deployments on U.S. Navy amphibious assault ships allows MEUs to seabase around the globe, ready for deployment at short notice. A typical MEU has approximately 2,200 members, including navy sailors. It

5840-541: The wearer's front. The insignia for a colonel is a silver eagle which is a stylized representation of the eagle dominating the Great Seal of the United States (which is the coat of arms of the United States). As on the Great Seal, the eagle has a U.S. shield superimposed on its chest and is holding an olive branch and bundle of arrows in its talons . However, in simplification of the Great Seal image,

5920-481: Was 336 including 198 army officers and the rest divided among other military branches, domestic inter-agency representatives and other foreign military leaders. A high concentration of USAF colonels graduate from the Air War College (AWC) at Maxwell AFB , Alabama via in-residence at Maxwell AFB, while other USAF colonels complete AWC via a non-resident seminar program paralleling the in-residence program or

6000-579: Was a prototype VTOL 6x General Electric J85 Turbojet engined nuclear capable strike fighter concept designed by Alexander Kartveli that had 3x ducted fans in the centre of its fuselage and tail as a possible contender for the TFX Program . Another design was the A400 AVS that used variable geometry wings but was found too complicated, however it led to the development of the AFVG which in turn helped

6080-644: Was common in the Army until the development of the brigade combat team early in the War on Terror , with a similar concept, the combat command , being utilized in World War II . This air-ground task force concept is designed to thoroughly exploit the combat power inherent in air and ground assets by closely integrating them into a single force. The MEU brings all the supplies and logistical support it needs to sustain itself for quick mission accomplishment or to prepare

6160-551: Was demonstrated and evaluated in the United States aboard the aircraft carriers USS Guam and USS Guadalcanal , and at various other centres. These trials involved military pilots from the United States, the United Kingdom and Canada. During testing, two of the CL-84s crashed due to mechanical failures, but no loss of life occurred as a result of these accidents. No production contracts resulted. Although tiltrotors such as

6240-574: Was investigated in the 1950s. The US built an aircraft where the jet exhaust drove the fans , while British projects not built included fans driven by mechanical drives from the jet engines. NASA has flown other VTOL craft such as the Bell XV-15 research craft (1977), as have the Soviet Navy and Luftwaffe . Sikorsky tested an aircraft dubbed the X-Wing , which took off in the manner of

6320-572: Was not re-introduced until 1802. The first insignia for the rank of colonel consisted of gold epaulettes worn on the blue uniform of the Continental Army . The rank of colonel was relatively rare in the early 19th century, partly because the U.S. Army was very small, and the rank was usually obtained only after long years of service. During the War of 1812 the Army grew rapidly and many colonels were appointed, but most of these colonels were discharged when their regiments were disbanded at

6400-655: Was the last scheduled test for the Grasshopper rig; next up will be low altitude tests of the Falcon 9 Reusable (F9R) development vehicle in Texas followed by high altitude testing in New Mexico. On November 23, 2015, Blue Origin 's New Shepard booster rocket made the first successful vertical landing following an uncrewed suborbital test flight that reached space. On December 21, 2015, SpaceX Falcon 9 first stage made

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