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  2. Bell H-13 Sioux - Wikipedia

    en.wikipedia.org/wiki/Bell_H-13_Sioux

    Variants. Bell 201. Developed into. Bell 207 Sioux Scout. The Bell H-13 Sioux is an American single-engine light helicopter built by Bell Helicopter and manufactured by Westland Aircraft under license for the British military as the Sioux AH.1 and HT.2. It was the first helicopter to be certified for civil use. [2]

  3. Light Observation Helicopter - Wikipedia

    en.wikipedia.org/wiki/Light_Observation_Helicopter

    Army Helicopter Improvement Program. The Light Observation Helicopter (LOH) program was a United States Army program to evaluate, develop and field a light scout helicopter to replace the Army's aging Bell OH-13 Sioux. It gained impetus with the advent of the Vietnam War, and was aided by advances in helicopter technology, specifically the ...

  4. Hughes TH-55 Osage - Wikipedia

    en.wikipedia.org/wiki/Hughes_TH-55_Osage

    In 1958, prior to full-time production, Hughes provided five preproduction Model 269A examples to the U.S. Army for evaluation as a light observation helicopter to replace the aging OH-13 Sioux and OH-23 Raven. Designated as the YHO-2HU [3] [4] the helicopter was eventually turned down. On 9 April 1959, the 269A received certification from the FAA.

  5. Hiller OH-23 Raven - Wikipedia

    en.wikipedia.org/wiki/Hiller_OH-23_Raven

    First flight. 1948. The Hiller OH-23 Raven is a two, three, or four-place, military light observation helicopter based on the Hiller Model 360. The Model 360 was designated by the company as the UH-12 ("UH" for United Helicopters), [1] which was first flown in 1948. Initially it was a two-place helicopter powered by a piston engine that entered ...

  6. U.S. helicopter armament subsystems - Wikipedia

    en.wikipedia.org/wiki/U.S._helicopter_armament...

    U.S. helicopter armament subsystems. Typical armament for UH-1 gunship, M134 minigun and Mk 40 FFAR with a swivel-mounted M60 machine gun. The United States military has developed a number of Helicopter Armament Subsystems since the early 1960s. These systems are used for offensive and defensive purposes and make use of a wide variety of weapon ...

  7. Bell YOH-4 - Wikipedia

    en.wikipedia.org/wiki/Bell_YOH-4

    The Bell YOH-4 (originally YHO-4) was a single-engine, single-rotor light helicopter, developed for the United States Army's Light Observation Helicopter program. While the YOH-4A was unsuccessful in the original LOH competition, Bell redesigned it as the sleek Bell 206A JetRanger for the commercial market, and enjoyed instant and lasting success.

  8. Lockheed XH-51 - Wikipedia

    en.wikipedia.org/wiki/Lockheed_XH-51

    Number built. 3. The Lockheed XH-51 (Model 186) is an American single-engine experimental helicopter designed by Lockheed Aircraft, utilizing a rigid rotor and retractable skid landing gear. The XH-51 was selected as the test vehicle for a joint research program conducted by the United States Army and United States Navy to explore rigid rotor ...

  9. Bell Huey family - Wikipedia

    en.wikipedia.org/wiki/Bell_Huey_family

    The Bell Huey family of helicopters includes a wide range of civil and military aircraft produced since 1956 by Bell Helicopter.This H-1 family of aircraft includes the utility UH-1 Iroquois and the derivative AH-1 Cobra attack helicopter series and ranges from the XH-40 prototype, first flown in October 1956, to the 21st-century UH-1Y Venom and AH-1Z Viper.