A Time Domain Analysis of a Rigid Two-Bladed Fully Gimballed Helicopter Rotor with Circulation Control

Abstract

An analytic investigation was made to determine the dynamic properties of a two-bladed rigid fully gimballed helicopter rotor incorporating circulation control airfoils and tip jet propulsion. A time domain analysis was developed which provided the capability of using nonlinear airfoil aerodynamics and arbitrary rotor physical characteristics. The effects of feather principal axis of inertia location, horizontal gust disturbances, and feedback control on rotor stability were assessed. Results of the investigation indicate that the subject helicopter rotors are unstable in forward flight without feedback control. With feedback, the rotors are stable and controllable.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1983
Accession Number
ADA136947

Entities

People

  • P. S. Montana

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Aircrafts
  • Airfoils
  • Boundaries
  • Computer Programs
  • Computers
  • Control Systems
  • Equations
  • Equations Of Motion
  • Euler Angles
  • Frequency
  • Gravity
  • Helicopter Rotors
  • Helicopters
  • Simulations
  • Time Domain
  • Vehicles

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Robotics and Automation.