Variable Diameter Rotor Study

Abstract

The report documents the findings of a variable diameter rotor systems concept study which Sikorsky Aircraft performed. The objective of the study was to investigate the various schemes proposed for variable diameter rotors for compound helicopters, to determine the merits of each, and to conclude which is most promising. Three basic types of variable diameter rotors were investigated, classified by the type of rotor blade construction: telescoping rigid blades, folding rigid blades, and flexible blades. Examples of each of these were adapted to a large compound helicopter design. All aircraft were sized to perform the same mission and a quantitative analysis was performed which rated each design on overall system cost effectiveness.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1972
Accession Number
AD0740911

Entities

People

  • Arthur W. Linden

Organizations

  • United Technologies Corporation

Tags

Communities of Interest

  • Air Platforms
  • Engineered Resilient Systems

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aircraft Equipment
  • Aircraft Industry
  • Aircrafts
  • Airframes
  • Control Systems
  • Dynamic Response
  • Fixed Wing Aircraft
  • Friction
  • Helicopter Rotors
  • High Lift Devices
  • Mach Number
  • Mechanics
  • Rotary Wing Aircraft
  • Short Takeoff Aircraft
  • Spars
  • Wing Flaps

Readers

  • Aerodynamics.
  • Electrical Engineering
  • Systems Analysis and Design

Technology Areas

  • Space