Accession Number:

AD0734706

Title:

Hypersonic Wake Studies Using Cooled-Film Anemometer Techniques,

Descriptive Note:

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT VALCARTIER QUEBEC

Personal Author(s):

Report Date:

1971-01-01

Pagination or Media Count:

15.0

Abstract:

The techniques of cooled-film anemometry have been applied to the determination of temperature and velocity distributions in the wakes of projectiles travelling at hypersonic speeds in a free flight range. The anemometer sensing element comprises a thin platinum film which is deposited on a section of a fine vycor loop through which a refrigerant can be circulated. A gold coating on the remainder of the loop provides an electrical connection to a bridge circuit incorporating a feedback system which maintains the sensor at constant resistance and hence constant temperature for frequencies up to 50KHz. Author

Descriptors:

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE