Acoustic temperature measurement in a rocket noise field | Zendy

Jarom H. Giraud | Zendy; Kent L. Gee | Zendy; J. Ellsworth | Zendy

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Acoustic temperature measurement in a rocket noise field

Author(s) -

Jarom H. Giraud,

Kent L. Gee,

J. Ellsworth

Publication year - 2010

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.3384663

Subject(s) - acoustics , microphone , materials science , resistance thermometer , transducer , temperature measurement , thermometer , sound pressure , solid fuel rocket , physics , propellant , thermodynamics , chemistry , organic chemistry

A 1 μm diameter platinum wire resistance thermometer has been used to measure temperature fluctuations generated during a static GEM-60 rocket motor test. Exact and small-signal relationships between acoustic pressure and acoustic temperature are derived in order to compare the temperature probe output with that of a 3.18 mm diameter condenser microphone. After preliminary plane wave tests yielded good agreement between the transducers within the temperature probe's ∼2 kHz bandwidth, comparison between the temperature probe and microphone data during the motor firing show that the ±∼3 K acoustic temperature fluctuations are a significant contributor to the total temperature variations.

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