Accession Number:

AD0774750

Title:

A Fixed-Base Ground Simulator Study of Control and Display Requirements for VTOL Instrument Landings with a Decelerating Approach to a Hover.

Descriptive Note:

Final rept.,

Corporate Author:

CALSPAN CORP BUFFALO N Y

Personal Author(s):

• Aiken,Edwin W.
• Schuler,John M.

Report Date:

1974-02-01

Pagination or Media Count:

97.0

Abstract:

An exploratory study of the control and display requirements for performing decelerating transition landings on instruments with the X-22A aircraft was conducted utilizing the X-22A fixed-base ground simulator as a test bed. This experiment was prerequisite for an in-flight VTOL Transition Landing Program using the variable stability X-22A as a research vehicle. Both full and partial transitions to a hover were flown along a 10 degrees glide path at deceleration levels of up to 0.1 g. Various controldisplay system combinations were designed, developed, and evaluated for the task. Two specific objectives of the experiment were to investigate the benefits of a direct velocity control system, as opposed to the normal X-22A thrust controls, and to determine the feasibility of adapting, through electronic rather than mechanical means, the X-22A duct rotation system to direct velocity control. Modified author abstract

Descriptors:

• *Vertical takeoff aircraft
• *Instrument landings
• Flight simulators
• Deceleration
• Hovering
• Digital simulation
• Attitude control systems
• Glide slope

Subject Categories:

• VSTOL

Distribution Statement:

APPROVED FOR PUBLIC RELEASE