Method and apparatus for evaluating condensation amount
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United States of America Patent
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Sep 12, 1989
Grant Date -
N/A
app pub date -
Dec 23, 1986
filing date -
Dec 23, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to evaluate the condensation amount in a jet engine intake duct, for calibrating the engine, apparatus are provided which induce a high speed flow of air through a duct. The duct is designed so that the air velocity within it very gradually increases along it until a choked (sonic) condition is reached. At or around sonic conditions static pressure is very responsive to changes in flow due to condensation. Thus by first obtaining a pressure profile along the duct under non-condensing conditions and then comparing this with a pressure profile under condensing conditions a condensation amount can be computed.
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