Erj-145mech From United States of America, joined Oct 2001, 306 posts, RR: 1 Reply 1, posted (10 years 1 month 1 day 17 hours ago) and read 2351 times:
Its a probe to measure the air pressure going into the engine.
B747skipper From , joined Dec 1969, posts, RR: Reply 2, posted (10 years 4 weeks 8 hours ago) and read 2112 times:
Cher Cricri -
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This probe is called "Pt-2" and measures the ambient pressure of the air in the inlet area of the engine... It works in concert with a probe, or probes which you would find in the exhaust of that engine, called "Pt-7" which measure the pressure in the turbine discharge area...
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These probes are tied to a "power gage" for the engine, called EPR, exhaust pressure ratio, a primary means to set power (takeoff or cruise) on many jet engines...
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In example, if the pressure is 1.50 measured at Pt-5 and the pressure at Pt-2 is 1.0, the EPR gage would indicate "1.5"...
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Bonne soiree
(s) Skipper
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From United States of America, joined Oct 2001, 306 posts, 
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