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J Acoust Soc Am. 2010 May;127(5):EL179-84. doi: 10.1121/1.3384663.

Acoustic temperature measurement in a rocket noise field.

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Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA.


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.

[Indexed for MEDLINE]

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