AN INVESTIGATION OF MECHANICAL STABILITY AND TRIM AUGMENTATION ON HELICOPTER IFR CAPABILITY

Abstract

Directional flight characteristics of the H-41 helicopter were improved with tail rotor blade design changes and with the addition of two mechanical gyro systems. Evaluation of these systems was accomplished by measurement of the air craft characteristics and by pilot evaluation during simulated instrument flight. The mechanical stabilization systems were found to be effective and to offer a low level of required maintenance. The IFR capability was extended to 25 kt on a basis comparable with 40 kt as determined on a previous program. Simulated IFR approaches, transition to hovering, and landings were conducted.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1963
Accession Number
AD0408750

Entities

People

  • Charles M. Seibel

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Center Of Gravity
  • Contracts
  • Control Systems
  • Flight
  • Government Procurement
  • Helicopters
  • Instrument Flight
  • Maintenance
  • Measurement
  • Rotary Wing Aircraft
  • Stabilization Systems
  • Tail Rotors
  • Test And Evaluation
  • Test Equipment

Fields of Study

  • Physics

Readers

  • Aviation Safety and Air Traffic Management
  • Control Systems Engineering.
  • Marine Hydrodynamics