Topic Author
Posts: 540
Joined: Sat Oct 02, 1999 12:10 am

A Tube In The Engine, What Is It?

Tue Apr 22, 2003 10:22 pm

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?

Thanks for your help.
Posts: 305
Joined: Tue Oct 02, 2001 4:21 am

RE: A Tube In The Engine, What Is It?

Tue Apr 22, 2003 10:33 pm

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

RE: A Tube In The Engine, What Is It?

Sat Apr 26, 2003 8:18 am

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

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