Standardised Fatigue loading Sequences for Helicopter Rotors (Helix and Felix) Part 2. Final Definition of Helix and Felix

Abstract

This Report defines two loading standards for the fatigue evaluation of helicopter rotor materials and components. They were developed as a collaborative study between West Germany, the Netherlands and UK. Details of the contributing organisations are given in Appendix A. The new loading standards follow the earlier TWIST (Transport Wing Standard), and FALSTAFF (Fighter Aircraft Loading Standard For Fatigue evaluation). After the tradition of these earlier loading sequences, the new loading standards have been given identifying names. For these the origin of the word helicopter (helix-spiral, pteronwing from the Greek) has provided a convenient basis. The new standards are called: Helix - loading standard for 'hinged' or articulated rotors; Felix - loading standard for 'fixed' or semi-rigid rotors. This report defines the final form of the two standards, statistical content according to different counting methods and full details of their method of generation. Additional keywords: Algorithms; Fortran program.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1984
Accession Number
ADA156622

Entities

People

  • J. Darts
  • P. R. Edwards

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Algorithms
  • Altitude
  • Autorotation
  • Computer Programs
  • Counting Methods
  • Demographic Cohorts
  • Fatigue Tests (Mechanics)
  • Fighter Aircraft
  • Helicopter Rotors
  • Helicopters
  • Magnetic Tape
  • Materials
  • Search And Rescue
  • Test And Evaluation
  • Training
  • West Germany

Readers

  • Aerospace Engineering
  • Computer Programming and Software Development.
  • Structural Health Monitoring of Composite Structures.