A MACH NUMBER MONITOR FOR A TRANSONIC WIND-TUNNEL.

Abstract

The report describes the Mach number monitor installed in the 3 ft tunnel for use in setting and holding constant the test Mach number at transonic speeds. A Wheatstone bridge is employed to compare the ratio of resistance analogues of static pressure and total pressure with a four-digit target ratio. Unbalance is indicated in terms of error in mach number M. The instrument is accurate to 0.001 M over its useful range of M = 0.3 to 1.4 K also provides an electrical output which could be used for automatic control of tunnel speed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1967
Accession Number
AD0665811

Entities

People

  • S. Barcroft

Organizations

  • Royal Aircraft Establishment

Tags

DTIC Thesaurus Topics

  • Analogs
  • Automatic
  • Buildings And Structures
  • Dynamic Pressure
  • Mach Number
  • Resistance
  • Static Pressure
  • Transonic Wind Tunnels
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Electrical Engineering