Oil tank and scavenge pipe assembly of a gas turbine engine and method of delivering an oil and air mixture to same
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United States of America Patent
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May 16, 2017
Grant Date -
Oct 20, 2016
app pub date -
Jun 22, 2016
filing date -
Dec 20, 2013
priority date (Note) -
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Abstract
An oil tank and scavenge pipe assembly of a gas turbine engine comprises a tank, and a scavenge pipe having a discharge portion disposed inside the tank. The discharge portion comprises a first portion having first and second ends. The first end is adapted to connect to an oil return line for receiving a mixture of oil and air. A bend extends from the second end downstream thereof relative to a flow of the mixture of oil and air through the scavenge pipe. The bend is configured to cause stratification of the mixture of oil and air as the mixture of oil and air flows through it. An outlet downstream of the bend delivers the mixture of oil and air to the tank. A method of delivering an oil and air mixture to a rotating oil volume of a tank of a gas turbine engine is also presented.
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