Investigation of Upper Surface Blowing Applied to High Speed Aircraft.

Abstract

A preliminary evaluation of a transonic, propulsive, life augmentation system known as upper surface blowing (USB) has been completed. USB is a thick jet, jet flap powered lift concept which uses a trailing edge flap and the Coanda effect to vector the jet engine exhaust for lift augmentation. A wind tunnel test has demonstrated lift induction induction increments 1 1/2 to 3 times the thrust vectored component in the lift direction. An estimate of a USB fighter performance shows a possible 40 knot reduction in approach speed and a 10% reduction in trun radius for a maximum sustained 'g' turn at Mach 0.90 and 30,000 feet altitude.

Document Details

Document Type
Technical Report
Publication Date
Jul 02, 1974
Accession Number
ADA003325

Entities

People

  • Kichio K. Ishimitsu

Organizations

  • Boeing

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Altitude
  • Coanda Effect
  • Engines
  • Jet Engine Exhaust
  • Jet Engines
  • Jet Flaps
  • Powered Lift
  • Test And Evaluation
  • Trailing Edges
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Aerospace Engineering