LOW SPEED TUNNEL TESTS WITH JET FLOW REPRESENTED ON A 1/5TH SCALE MODEL OF A TWIN JET FIGHTER WITH AN UNSWEPT WING AND V-TAILPLANE (SUPERMARINE N9/47)

Abstract

Low-speed tunnel tests were made on the Supermarine N 9/47 to check the effects of the jet flow on the longitudinal stability and to test the V-tailplane. A 1/5-scale model of the aircraft was used. The tests were made in the 11 1/2- by 8 1/2-ft tunnel with wind speeds of 80 and 120 fps, giving Reynolds numbers of 0.82 and 1.23 x 10 to the 6th power based on the standard mean chord of the wing. Modifications to the jet exit fillet increased its effectiveness in keeping the jet flow clear of the rear fuselage. The estimates of the over-all effect of the jets on the longitudinal stability agreed reasonably well with the measured values.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1952
Accession Number
AD0008142

Entities

People

  • D. A. Kirby

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Aircrafts
  • Aspect Ratio
  • Boundary Layer
  • Coefficients
  • Flow
  • Free Stream
  • Fuselages
  • Jet Flow
  • Mass Flow
  • Measurement
  • Models
  • Reynolds Number
  • Scale Models
  • Sea Level
  • Security
  • Standards

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Combustion and Flow Dynamics.