Evaluation of the OV-1D Stall Warning Characteristics
Abstract
A high angle of attack flight and stall characteristics evaluation of the OV-1D(C) surveillance airplane was conducted. The aircraft was equipped with a Safe Flight Instrument Corp. (SFIC) prototype stall warning system. Tests were flown with and without external aircraft mission/survivability equipment including the Louvered Scarfed Shroud Suppressor (LSSS) used for engine infrared signature suppression. A total of 44.9 productive hours were flown. Dual and single-engine unaccelerated stall, dual-engine accelerated stall, minimum trim airspeed, and static and dynamic single-engine minimum control airspeed tests were conducted over a range of gross weights and center of gravity locations. Evasive maneuvers and operational pilot evaluations of the SFIC stall warning system were conducted. The dual and single-engine unaccelerated stall speeds and dual-engine accelerated stall speeds were not significantly affected by installation of the LSSS. Dual-engine flight idle power unaccelerated and accelerated stall speed data were essentially in agreement with the operator's manual flight idle power stall speed chart. The minimum single-engine control speed data differ significantly from the operator's manual and there is no accurate maximum single-engine power stall speed data in the manual. The SFIC stall warning system provided adequate aural and tactile stall warning margins in all cases except as noted.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1986
- Accession Number
- ADA178194
Entities
People
- George M. Yamakawa
- Jeffrey L. Linehan
- Robert D. Robbins