Sectionalized Main Rotor Blade Advanced Design Study

Abstract

This report covers a study undertaken for the advanced design of a sectionalized main rotor blade. After investigation of the whole spectrum of design arrangements, a bolted-together design (with field replaceable boxes, L. E. tip and trailing edge) was chosen. For direct replacement of existing blades, a bolted design was selected with essentially the same dynamic rotor characteristics of the current production blade. The parameters that were closely matched to achieve this were: NATURAL FREQUENCY, LOADS, AND DYNAMIC BALANCE AXIS. A cost increase of approximately 50 percent is indicated over present UH-1H rotor blades to match current design features, utilizing ground rules on inherent and external damage specified by the procuring agency.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1972
Accession Number
AD0750633

Entities

People

  • Tadeusz Tarczynski

Organizations

  • Boeing Rotorcraft Systems

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Bodily Secretions
  • Bolted Joints
  • Contracts
  • Foreign Object Damage
  • Frequency
  • Helicopter Rotors
  • Joints
  • Manufacturing
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Production
  • Resonant Frequency
  • Stress Concentration
  • Test And Evaluation

Readers

  • Aerodynamics.
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