A Three-Axis Fluidic Stability Augmentation System

Abstract

The report covers the analysis, design, fabrication and laboratory tests of a three-axis hydrofluidic stability augmentation system for a UH-1-type helicopter. The design goal was to improve the handling qualities of the aircraft, without stabilizer bar, in the speed range of 60 to 120 knots. The control problem was analyzed and a system defined through use of analog computer simulation techniques. The defined system was mechanized into three separate controller packages, one for each axis. The system was subjected to temperature and vibration flightworthiness tests. The final tests conducted were closed- loop performance checks using an analog computer to simulate the aircraft dynamics.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1971
Accession Number
AD0739559

Entities

People

  • Harvey D. Ogren

Organizations

  • Honeywell International, Inc.

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Analog Computers
  • Angular Acceleration
  • Closed Loop Systems
  • Computer Simulations
  • Control Sticks
  • Control Systems
  • Dynamic Response
  • Equations Of Motion
  • Fabrication
  • Fluidic Amplifiers
  • Power Supplies
  • Regulators
  • Resonant Frequency
  • Test And Evaluation

Readers

  • Aerospace Engineering
  • Inertial Navigation Systems.
  • Software Engineering