GAS TURBINE ENGINE WITH VARIABLE PITCH FIRST STAGE FAN SECTION
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United States of America Patent
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Issued Date -
May 2, 2013
app pub date -
Nov 1, 2011
filing date -
Nov 1, 2011
priority date (Note) -
Abandoned
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Abstract
A gas turbine engine with a two-spool fan and a method of operating the gas turbine engine includes modulating a pitch of a variable pitch first stage fan section of a low pressure spool, the variable pitch first stage fan section upstream of a second stage fan section of an intermediate pressure spool to maintain a generally constant engine inlet flow while modulating engine thrust.
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