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  2. Tandem-rotor aircraft - Wikipedia

    en.wikipedia.org/wiki/Tandem-rotor_aircraft

    Tandem-rotor helicopters have the advantage of being able to hold more weight with shorter blades, since there are two sets. However, the rear rotor works in the aerodynamic shadow of the front rotor, which reduces its efficiency. This loss can be minimized by increasing the distance between the two rotor hubs, and by elevating one hub over the ...

  3. Boeing CH-47 Chinook - Wikipedia

    en.wikipedia.org/wiki/Boeing_CH-47_Chinook

    The Boeing CH-47 Chinook is a tandem-rotor helicopter originally developed by American rotorcraft company Vertol and now manufactured by Boeing Defense, Space & Security.The Chinook is a heavy-lift helicopter that is among the heaviest lifting Western helicopters.

  4. Sikorsky–Boeing SB-1 Defiant - Wikipedia

    en.wikipedia.org/wiki/Sikorsky–Boeing_SB-1_Defiant

    It is a compound helicopter with rigid coaxial rotors, powered by two Honeywell T55 turboshaft engines; it first flew on 21 March 2019. In December 2022, the U.S. Army selected the rival Bell V-280 Valor as the winner of the Future Long-Range Assault Aircraft program. [2]

  5. Sikorsky Raider X - Wikipedia

    en.wikipedia.org/wiki/Sikorsky_Raider_X

    The Sikorsky Raider X (stylized in all-caps as RAIDER X) (Sikorsky S-102 [1]) is a compound helicopter concept with two coaxial rotors and a single pusher propeller, designed by the Sikorsky Aircraft division of Lockheed Martin for the United States Army Future Attack Reconnaissance Aircraft (FARA) program. The Raider X concept was announced in ...

  6. Bell Boeing V-22 Osprey - Wikipedia

    en.wikipedia.org/wiki/Bell_Boeing_V-22_Osprey

    This is an accepted version of this page This is the latest accepted revision, reviewed on 29 December 2024. Military transport tiltrotor "V-22" redirects here. For other uses, see V22 (disambiguation). V-22 Osprey A MV-22 being used during a MAGTF demonstration during the 2014 Miramar Air Show General information Type Tiltrotor military transport aircraft National origin United States ...

  7. Piasecki HUP Retriever - Wikipedia

    en.wikipedia.org/wiki/Piasecki_HUP_Retriever

    The Piasecki HUP Retriever or H-25 Army Mule, later UH-25, is a compact single radial engine, twin overlapping tandem rotor utility helicopter developed by the Piasecki Helicopter Corporation of Morton, Pennsylvania.

  8. Boeing Chinook (UK variants) - Wikipedia

    en.wikipedia.org/wiki/Boeing_Chinook_(UK_variants)

    The Boeing Chinook is a large, tandem rotor helicopter operated by the Royal Air Force (RAF). A series of variants based on the United States Army's Boeing CH-47 Chinook, the RAF Chinook fleet is the largest outside the United States. [1] RAF Chinooks have seen extensive service in the Falklands War, the Balkans, Northern Ireland, Iraq, and ...

  9. Bell V-280 Valor - Wikipedia

    en.wikipedia.org/wiki/Bell_V-280_Valor

    The Bell V-280 Valor is a tiltrotor aircraft being developed by Bell Helicopter for the United States Army's Future Vertical Lift (FVL) program. [2] The aircraft was officially unveiled at the 2013 Army Aviation Association of America's (AAAA) Annual Professional Forum and Exposition in Fort Worth, Texas.

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