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15. Gas turbine engine

With a fixed throttle in a climb

  • RPM will increase.
  • RPM will remain constant.
  • RPM will decrease.

Explanation from PART66Online

With the throttle fixed in a climb, the fuel control holds the scheduled fuel flow while the air becomes thinner and intake temperature falls. The reduced air density lets the compressor spin faster for the same fuel, so the engine RPM tends to increase as the aircraft climbs.

G

ggmu asked · 23 Aug 2014

explaination?

Community Comments (1)

P
PART66Online 24 Aug 2014
Hey. This is because of density.

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