Limited flight tests of a prototype aircraft were conducted at 3 test facilities at various altitudes. Testing concentrated on hover and level flight performance, controllability, and low-speed flight characteristics at heavy gross weight, high density altitude test conditions. The YAH-1S represents a significant improvement over the AH-1G/Q helicopter by virtue of its increased useful load-carrying capability, directional controllability and control margin, and hover performance capability. The control system characteristics of the YAH-1S failed to meet several requirements of applicable paragraphs of military specification MIL-H-8501A and the approved BHC deviations to MIL-H-8501A against which they were tested, but were still considered satisfactory. One shortcoming was noted.
Airworthiness and Flight Characteristics Evaluation. YAH-1S Improved Cobra Agility and Maneuverability Helicopter
1975
102 pages
Report
Keine Angabe
Englisch
Aircraft , Helicopters , Flight testing , Aerodynamic characteristics , Airworthiness , Performance(Engineering) , Flight maneuvers , Airspeed , Hovering , Level flight , Low velocity , Payload , Handling , Climbing , Flight control systems , Directional , Maneuverability , H-1 aircraft , YAH-1S aircraft