Cold-Weather Flight Tests of an OH-58 Helicopter Equipped with an Elastomeric-Bearing Main Rotor

Abstract

The results of a flight test program conducted to investigate the characteristics of a main helicopter rotor equipped with elastomeric bearings operating at low temperatures are reported. The helicopter used was an OH-58A, and the main rotor tested had elastomeric bearings in the pitch-change and flapping axes. Operation at temperatures of 48, 5, -9, -13, -29, and -52 F was investigated. Normal rotor control was obtained down to temperatures of -13 F. At lower temperatures, elastomer stiffening caused increased control system loads, which limit operation.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1973
Accession Number
AD0772935

Entities

People

  • C. H. Fagan

Organizations

  • Bell Flight

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Axial Loads
  • Control Systems
  • Elastomers
  • Helicopter Rotors
  • Helicopters
  • Instrumentation
  • Low Temperature
  • Mobility
  • Production
  • Security
  • Stiffening
  • Stiffness
  • Tail Rotors
  • Test And Evaluation
  • Test Equipment

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Thermal Physics or Thermal Science.