Experiments on Transition Physics in Hypersonic Boundary Layers: Validation Data for Modeling and Computations

Abstract

The Mach 6 Quiet Tunnel (M6QT), the hypersonic low-disturbance facility formerly at NASA Langley, has been permanently installed as part of the Texas A&M National Aerothermochemistry Laboratory (TAMU-NAL) in College Station, Texas. The tunnel now operates interchangeably with the Adaptively Controlled Expansion Mach 5-8 tunnel (ACE) in a blowdown configuration with a maximum runtime of approximately 50 seconds. An initial series of tests to determine the quiet-flow capabilities of the nozzle indicate performance largely consistent with its former operation at NASA Langley, with evidence of a full-length quiet test core at stagnation pressures up to 145 psia. Intermittency present in the pressure signals at total pressures above 80 psia is quantified and discussed. In addition, the capability of the tunnel to support future flared-cone experimental models is demonstrated.

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Document Details

Document Type
Technical Report
Publication Date
Jan 26, 2012
Accession Number
ADA563785

Entities

People

  • William S. Saric

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Air Platforms
  • Human Systems
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Boundaries
  • Boundary Layer
  • Boundary Layer Control
  • Boundary Layer Flow
  • Chemistry
  • Computations
  • Data Acquisition
  • Dynamic Pressure
  • Fabrication
  • Geometry
  • Hypersonic Wind Tunnels
  • Measurement
  • Stagnation Pressure
  • Stainless Steel
  • Tubes
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Technical Research and Report Writing.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flow