Some Dynamic Properties of a Rigid Two-Bladed Fully Gimballed Rotor with Teetering Feedback

Abstract

A rigid two-bladed helicopter rotor mounted with no mechanical constraint of its teetering and feathering motions is analyzed with regard to the stability and controllability achievable with a simple feedback moment linearly proportional to teeter angle. Subject to confirmation by a detailed design study, it is tentatively concluded that the level of stability and control practically achievable with such a system would be adequate for tip-jet- driven very-heavy-lift helicopters. It is further concluded that the outlook for relatively low vibration levels is favorable. Keywords: Aerodynamics, Rotor aerodynamics, Rotor dynamics.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1986
Accession Number
ADA194946

Entities

People

  • Harvey R. Chaplin

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Boundaries
  • Classification
  • Closed Loop Systems
  • Coefficients
  • Differential Equations
  • Equations
  • Excitation
  • Feedback
  • Helicopter Rotors
  • Helicopters
  • Linear Differential Equations
  • Notation
  • Security
  • Steady State
  • Vibration

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Control Systems Engineering.