How is the efficiency of a turbo prop engine assessed?
- By correcting propeller RPM for ambient Air temperature and barometric pressure.
- By comparing compressor and propeller RPM against a reference figure.
- By comparing torque meter pressure against a reference figure.
Explanation from PART66Online
Engine indications vary with the day's conditions, so turboprop performance is assessed by correcting the observed propeller RPM for ambient air temperature and barometric pressure and comparing it with the expected figure. Without correcting for temperature and pressure the raw reading could not be judged against a reference.
M
mathema asked · 4 Dec 2012
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Community Comments (4)
M
mwongela
5 Dec 2012
not C?
A
alberto
7 Apr 2013
C is the wright answer possible as air temp and barometric pressure are constantly changing. Question is asking about the engine assessment which can be dettermind when comparing the actual torque meter pressure against a reference figure.
J
Jordi
18 Jun 2020
no guys you are wrong i think the correct answer it is as it is.
J
Jordi
18 Jun 2020
source is Rolls Royce The Jet Engine Page 138 Refers.
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