Hovering Helicopter Flight Dynamics- A Study of Vertical Motion.

Abstract

This document examines the flight dynamic characteristics of a hovering helicopter in response to collective stick inputs. Only vertical motion is considered. A mathematical model of the aerodynamics/kinematics and rotor system dynamics of a representative aircraft, linearized about the hovering flight condition, is used as a basis for the study. The dynamic behaviour of this model is compared with flight test results for similar inputs and the coefficients are adjusted to improve model performance. The model structure is then modified by the incorporation of additional terms to improve its accuracy. Although no attempt is made to optimize the coefficients of the model using parameter identification techniques, the approach used here provides acceptable results.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 20, 1987
Accession Number
ADA186944

Entities

People

  • C. R. Guy

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Automatic Pilots
  • Control Systems
  • Department Of Defense
  • Engineering
  • Equations
  • Flight Control Systems
  • Helicopters
  • Law
  • Mathematical Models
  • Moment Of Inertia
  • Periodic Variations
  • Simulations
  • Speed Regulators
  • Stabilization Systems
  • Transfer Functions

Readers

  • Aerospace Engineering
  • Control Systems Engineering.
  • Robotics and Automation.