Investigation of Pilot-Induced Longitudinal Oscillation in the Douglas Model A4D-2 Airplane,

Abstract

A stability analysis of the pilot-induced longitudinal oscillations on the Model A4D-2 is presented. Figures of merit for analyzing the system are chosen and numerous parameter variations are made to determine what can eliminate the oscillations. It is shown that the control system moment of inertia and the distance from the aircraft C.G. to the bob-weights can be selected to increase system stability. The revised control system which was considered suitable for the Board of Inspection and Survey trials is analyzed and is shown to have very favorable dynamic characteristics compared to the original system.

Document Details

Document Type
Technical Report
Publication Date
May 15, 1957
Accession Number
AD0784270

Entities

People

  • J. G. Wong
  • L. R. Springer
  • W. H. Terrill

Organizations

  • Douglas

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airplanes
  • Control Systems
  • Fixed Wing Aircraft
  • Inertia
  • Inspection
  • Moment Of Inertia
  • Oscillation

Fields of Study

  • Physics

Readers

  • Aviation Science / Aeronautics.
  • Control Systems Engineering.
  • Systems Analysis and Design