Accession Number:

ADA034384

Title:

The Development of a Displacement Interferometer for Model Deflection Measurements

Descriptive Note:

Final rept. Jul 1974-Jun 1976

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Report Date:

1977-01-01

Pagination or Media Count:

57.0

Abstract:

A two-beam laser interferometric device capable of continuously measuring either absolute or differential displacement both steady state and time variant with a resolution to one-quarter of the laser wavelength is described. This device is proposed for measurement of model attitude and deflection in wind tunnel applications. Experiments are presented demonstrating its accuracy, versatility, and online readout capabilities. A conceptual multibeam device to extend the present device for simultaneous measurement of pitch, roll, twist, and deflection is also discussed.

Subject Categories:

  • Aerodynamics
  • Test Facilities, Equipment and Methods
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE