Balance for Measuring Skin Friction in the Presence of Ablation

Abstract

This report describes a skin-friction balance that is presently being used to measure shear stresses acting on the wall of an ablative duct. Tests have been conducted in the 3 Megawatt Arc Tunnel with a Mach number of 3, a stagnation enthalpy of 3000 BTU/lb, and a stagnation pressure of 20 atmospheres. The balance is a direct deflection measuring device in that balance arm rotation is measured with a linear variable differential transformer as the balance arm deflects due to shear loads acting on the end of the balance arm.

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Document Details

Document Type
Technical Report
Publication Date
Sep 18, 1968
Accession Number
AD0844592

Entities

People

  • Donald B. Risher
  • James R. Bruno

Organizations

  • Naval Ordnance Laboratory

Tags

DTIC Thesaurus Topics

  • Ablation
  • Aerodynamics
  • Calibration
  • Deflection
  • Friction
  • Mach Number
  • Measurement
  • Mechanics
  • Modulus Of Elasticity
  • Munitions
  • Ordnance Laboratories
  • Rotation
  • Shear Stresses
  • Skin Friction
  • Stresses
  • Transformers
  • United States

Fields of Study

  • Physics

Readers

  • Asian Economic Studies
  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.