The Feasibility of the Jet-Flap Rotor as a Lift Generator for Vertical Takeoff and Landing Aircraft.

Abstract

The objectives of this study were first to determine the effectiveness of the jet-flap rotor relative to other lift generators, and second to examine the potential effectiveness of the jet-flap rotor in a tactical VTOL aircraft. It was found that the jet-flap rotor has a high theoretical potential, but at present is the least-developed of the lift generators considered. The jet-flap rotor was found to be unattractive as a means of providing vertical lift, except when a long hover duration is necessary. With regard to weight considerations alone, the jet-flap rotor was found to be inadvisable for use in a tactical VTOL aircraft. However, its benign downwash characteristics could make the jet-flap rotor advantageous if high downwash velocities and temperatures could not be tolerated. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA050214

Entities

People

  • John Charles Ball

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Boundary Layer
  • Boundary Layer Control
  • Dynamic Pressure
  • Flow
  • Generators
  • Jet Engines
  • Jet Flaps
  • Lift Fans
  • Mechanical Energy
  • Tilt Wings
  • United States
  • United States Naval Academy
  • Vertical Takeoff Aircraft

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Medical Imaging.
  • Systems Analysis and Design