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A Tube In The Engine, What Is It?  
User currently offlineCricri From France, joined Oct 1999, 581 posts, RR: 7
Posted (11 years 7 months 1 week 5 days 6 hours ago) and read 3292 times:

Coming along this pic (click for large version), i was asking myself what the little tube you can see inside (top right) is ? Fire extinguisher?

http://www.airliners.net/open.file/323591/L/

Thanks for your help.

2 replies: All unread, jump to last
 
User currently offlineErj-145mech From United States of America, joined Oct 2001, 306 posts, RR: 1
Reply 1, posted (11 years 7 months 1 week 5 days 6 hours ago) and read 3292 times:

Its a probe to measure the air pressure going into the engine.

User currently offlineB747skipper From , joined Dec 1969, posts, RR:
Reply 2, posted (11 years 7 months 1 week 1 day 20 hours ago) and read 3053 times:

Cher Cricri -
xxx
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...
xxx
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...
xxx
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"...
xxx
Bonne soiree  Smile
(s) Skipper


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