Resolution of tail buffet phenomena for AH-64D~TM longbow apache~TM

摘要

A cooperative numerical investigation involving researches from McDonnell Douglast Helicopter Systems(MDHS), the US Army Aeroflightdynamics Directorate(AFDD)and the NASA Ames Research Center(ARC)was conducted to identify the Cause, as well as the solution(s), to a pilot-reported horizontal and vertical tail buffering problem on the Longbow Apache AH- 64D helicopter in low sped descent flight. The investigation was conducted using the NASA Ames steady, three-dimensional, compressible Euler code, "TIGER".