Abstract
A high-temperature facility suitable for carrying out measurements of acoustic absorption in gases is described. The absorption data have been evaluated from a determination of the width of the response curve for various lengths of a resonant cavity. Temperatures up to 850°C have been obtained, with the gas pressures being a few inches of water in excess of the ambient pressure. The usable range of frequencies extends from about 2 kc to 5 kc. Representative data showing the temperature dependence of the molecular contribution to the total absorption will be shown for air. [Sponsored by Air Force Contract AF 33(616)-149.]
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