Accession Number : ADA118514

Title :   A Helicopter Handling-Qualities Study of the Effects of Engine Response Characteristics, Height-Control Dynamics, and Excess Power on Nap-of-the-Earth Operations,

Corporate Author : NATIONAL AERONUATICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER

Personal Author(s) : Corliss,Lloyd D

PDF Url : ADA118514

Report Date : Apr 1982

Pagination or Media Count : 12

Abstract : A ground-based simulation study was conducted on a large-scale motion simulator to study the effects in the vertical axis of engine response characteristics on handling qualities for a nap-of-the-earth (NOE) operating environment. This study concentrated specifically on the helicopter configuration with an rpm-governed gas-turbine engine and expands previous work by focusing on aspects peculiar to rotary-wing and NOE operations. A wide range of engine response time, vehicle damping and sensitivity, and excess power levels was studied. The data are compared with the existing handling-qualities specifications, MIL-F-83300 and AGARD 577, and in general show a need for higher minimums when performing such NOE maneuvers as a dolphin and bob-up task. (Author)

Descriptors :   *Helicopter engines, Vertical orientation, Flight simulation, Low altitude, Flight control systems, Couplings, Response, Yaw, Damping, Power levels, Range(Extremes)

Subject Categories : Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE