Fail-Safe/Safe-Life Interface Criteria

Abstract

Preparatory to developing fail-safe/safe-life design criteria for future helicopters, extensive literature and Government/industry surveys were conducted to define and evaluate the related state of the art. After selected fail-safe/safe-life design methodologies were defined, they were applied to the main and tail rotor systems (specifically the blade, blade retention device, hub, and rotating controls), the fuselage, and the landing gear. Next, in cost and weight trade-off studies, various combinations of design criteria for redundant structures, controlled-fracture structures, and monolithic structures with slow crack growth were evaluated with respect to their technical feasibility.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA009519

Entities

People

  • G. V. Feldt
  • S. W. Russell

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircraft Industry
  • Aircrafts
  • Airframes
  • Engineers
  • Fuselages
  • Helicopter Rotors
  • Material Degradation Processes
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Working
  • Mechanics
  • Rotary Wing Aircraft
  • Spars
  • Structural Components

Readers

  • Aerospace Engineering
  • Materials Science (Mechanical Engineering).
  • Software Engineering