The Optical Convolution Airspeed Indicator.

Abstract

The Optical convolution Velocimeter is a simple, inexpensive instrument for the measurement of airspeed. A shadowgraph of a hot turbulent wake is projected onto a grating and the reflected light fluctuates at a frequency proportional to the velocity of convection. The theory of the instrument is presented and its feasibility for airspeed measurement is discussed. The instrument has been tested in a low speed wind tunnel, on a light aircraft and compared with a Laser Velocimeter. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1975
Accession Number
ADA023206

Entities

People

  • Michael J. Rudd

Organizations

  • BBN Technologies

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airspeed
  • Airspeed Indicators
  • Convection
  • Convolution
  • Frequency
  • Indicators
  • Instrumentation
  • Laser Velocimeters
  • Measurement
  • Measuring Instruments
  • Motion
  • Physical Properties
  • Velocimeters
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy