ANALOG-COMPUTER INVESTIGATION OF EFFECTS OF FRICTION AND PRELOAD ON THE DYNAMIC LONGITUDINAL CHARACTERISTICS OF A PILOT-AIRPLANE COMBINATION

Abstract

With an analog computer, an investigation was made of the effects of stick pivot friction and servo valve friction on the longitudinal response of a fighter airplane. The results indicated that very small amounts of valve friction caused hunting oscillations of the piloted airplane when a small attitude correction was attempted. It was found that partial compensation for the effects of valve friction resulted from the presence of either stick friction or preloaded centering of the servo valve or the stick. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1961
Accession Number
AD0255956

Entities

People

  • Harold L. Crane

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airplanes
  • Analog Computers
  • Compensation
  • Computers
  • Computing Devices
  • Fighter Aircraft
  • Friction
  • Oscillation
  • Vehicles

Fields of Study

  • Engineering

Readers

  • Control Systems Engineering.
  • Electrical Engineering
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).