Accession Number:

ADA800632

Title:

Methods of Measurement of High Air Velocities by the Hot Wire Method

Descriptive Note:

Technical note

Corporate Author:

CASE INST OF TECH CLEVELAND OH

Personal Author(s):

Report Date:

1943-02-01

Pagination or Media Count:

33.0

Abstract:

Investigations of strengths of hot wires at high velocities were conducted with platinum, nickel, and tungsten at approximately 200 Degrees Celcius hot-wire temperature. The results appear to disqualify platinum for velocities approaching the sonic range whereas nickel withstands sound velocity, and tungsten may be used for supersonic velocities under standard atmospheric conditions. Hot wires must be supported by rigid prolongs at high velocities to avoid wire breakage. Resting current measurements for constant temperature show agreement with Kings relation.

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE