Modification of Jindivik Air Intake Duct with an Auxiliary Intake - Static Aerodynamic Tests

Abstract

Results are presented for an R and D program to improve the take-off performance of the Jindivik target aircraft. The engine air intake duct of Jindivik is aerodynamically optimised for altitude and high subsonic cruise, and scope for its modification, for improved performance at take-off, was limited to the incorporation of an auxiliary intake system which is deployed only during take-off and is closed in flight. The auxiliary intake concept was explored experimentally with a 1/4 model scale of Jindivik air intake duct, and involved both static testing and tests with forward speeds in the wind tunnel. This report covers the aerodynamic aspects of the static phase of the program, at which conditions substantial improvements in pressure recovery with acceptable levels of flow distortion at the engine face have been demonstrated for simple intake modifications.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1991
Accession Number
ADA243002

Entities

People

  • A. M. Abdel-fattah

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Flow
  • Air Intakes
  • Air Masses
  • Aircrafts
  • Aspect Ratio
  • Engineering
  • Flow
  • Flow Separation
  • Geometry
  • Instrumentation
  • Mass Flow
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Static Pressure
  • Wind Tunnel Tests
  • Wind Tunnels

Readers

  • Aerodynamics.
  • Aerodynamics/Aeronautics.
  • Aerospace Engineering