Army Preliminary Evaluation Prototype Hughes Model 369C (OH-6C) Helicopter
Army Preliminary Evaluation Prototype Hughes Model 369C (OH-6C) Helicopter

Author: Gary L. Skinner

Publisher:

Published: 1972

Total Pages: 91

ISBN-13:

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The Army Preliminary Evaluation (APE) of the Hughes Tool Company - Aircraft Division (HTC-AD) prototype Model 369C (OH-6C) helicopter was conducted at the Hughes facility in Culver City, California. A total of 34.6 productive flight hours were accumulated during the period 26 August to 22 September 1971. Engineering flight tests were conducted to evaluate the performance, handling qualities, and contractor-proposed flight envelope and to provide data for future use in the evaluation of the HTC-AD New Initiatives - Aerial Scout Program proposal. The data indicate that, in comparison with the OH-6A, the Hughes Model 369C can hover out of ground effect on a 35 C day at 4000 feet with a 207-pound increase in payload. The Model 369C can achieve a maximum level flight airspeed of 141 knots calibrated airspeed (KCAS) with a 660-pound payload - an increase of 14 percent over the 124-KCAS never-exceed velocity of the OH-6A.

Army Preliminary Evaluation, Prototype OH-58A Helicopter with XM27E1 Weapon Subsystem
Army Preliminary Evaluation, Prototype OH-58A Helicopter with XM27E1 Weapon Subsystem

Author: John Nagata

Publisher:

Published: 1970

Total Pages: 59

ISBN-13:

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The Army Preliminary Evaluation of the OH-58A prototype helicopter was conducted in the vicinity of Arlington, Texas, during the period 26 June to 9 July 1969. Thirteen test flights were conducted for a total of 14.5 hours of which 9.1 hours were productive. The evaluation consisted of limited quantitative and qualitative stability and control tests in the armed scout configuration only. The handling qualities of the OH-58A are satisfactory for the accomplishment of the armed scout mission. (Author).

Army Preliminary Evaluation of the Prototype BHC Model 211 (Hueytug).
Army Preliminary Evaluation of the Prototype BHC Model 211 (Hueytug).

Author: Theodore K. Wright

Publisher:

Published: 1969

Total Pages: 104

ISBN-13:

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In 1966 the Bell Helicopter Company (BHC) commenced the development of an artillery-prime mover version of the UH-1 helicopter. Concurrently, BHC also began developing the dynamic components for a 2000 shaft horsepower (shp) drive system. In early 1968, a converted model UH-1C with increased horsepower, larger rotor blades and additional modifications was first flown and introduced as the BHC Model 211 (Hueytug). The prototype Hueytug was designed to transport sling loads weighing up to 6000 pounds at a design take-off gross weight of 14,000 pounds. The Hueytug is also designed for battlefield recovery of downed aircraft, command and control, medical evacuation and resupply missions. The US Army Aviation Systems Test Activity was directed by the US Army Aviation Systems Command to perform an Army Preliminary Evaluation (APE) on the prototype BHC Model 211 (Hueytug).