Accession Number:

ADP005979

Title:

Investigation of Vertical Axis Handling Qualities for Helicopter Hover and Noe Flight,

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO) FLIGHT RESEARCH LAB

Personal Author(s):

Report Date:

1987-06-01

Pagination or Media Count:

9.0

Abstract:

The preliminary results of two in-flight simulation programs on vertical axis rotorcraft handling qualities are presented. The parameters investigated in these studies were heave damping, Zw thrust to weight ratio, TW, and a number of dynamic engine governorrotor system models. Flight tasks included hover, hover manoeuvering and nap of the earth NOE flight. Evaluation of 9 heave damping, thrust to weight ratio configurations provides that basis to suggest Level 1 Zw and TW boundary values of -0.20 sec. and 1.08 respectively. These boundaries are compared with other relevant work on the topic. The engine governorrotor system evaluation results tend to disagree with handling qualities predictions based on a vertical velocity shaping parameter however further investigation is required. NATO.

Subject Categories:

  • Flight Control and Instrumentation
  • Helicopters

Distribution Statement:

APPROVED FOR PUBLIC RELEASE