Airworthiness and Flight Characteristics Evaluation. YAH-1S Improved Cobra Agility and Maneuverability Helicopter
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1975
- Accession Number
- ADA025476
Entities
People
- Gary L. Skinner
- Richard C. Tarr
- William Y. Abbott