Accession Number : ADA191809

Title :   Method for Prediction and Determination of Takeoff Performance for Vectored Thrust Vehicles.

Descriptive Note : Technical memo.,

Corporate Author : NAVAL AIR TEST CENTER PATUXENT RIVER MD

Personal Author(s) : Calvert, J F

PDF Url : ADA191809

Report Date : 05 Jan 1988

Pagination or Media Count : 18

Abstract : YAV-8B and AV-8B Short Takeoff(STO) test results had indicated that STO techniques for the Harrier II could be further optimized, particularly for operations at higher hover weight ratios (1.3 and above). This paper documents a method to predicted and determine optimum land-based STO performance with minimum flight testing required. The method was applied during the determination of the optimum STO performance of the AV-8B, and is tailored generally toward thrust vectored vehicles with rapid thrust vectoring capability. With certain assumptions accounted for this approach can also be used in less restricted cases. Emphasis was placed on developing a repeatable task terminating with sufficient flight path acceleration at 50 ft AGL. STO tests conducted using the revised STO procedures validated the improvement in STO performance. Changes to the AV-8B flight operations manual were recommended in order to implement the revised STO task.

Descriptors :   *TAKEOFF, *SHORT TAKEOFF AIRCRAFT, ACCELERATION, DETERMINATION, FLIGHT PATHS, FLIGHT TESTING, HOVERING, LIMITATIONS, OPTIMIZATION, PERFORMANCE(ENGINEERING), RATIOS, REPRODUCIBILITY, THRUST, THRUST VECTOR CONTROL SYSTEMS, WEIGHT, JET FIGHTERS

Subject Categories : Military Aircraft Operations

Distribution Statement : APPROVED FOR PUBLIC RELEASE