Compressor Stall

Question 1

It is the failure of the compressor blades to move air at the desired rate.

Answer 1

Compressor Stall

Question 2

_____ compressors work more efficiently on lower rpm’s

Answer 2

Axial

Question 3

When does compressor stall occur?

Answer 3

Whenever there is an unusually high compressor RPM and a low air inlet velovity.

Question 4

Symptoms of Compressor stall:

Answer 4

• Rise in inter-stage turbine temperature (ITT) or exhaust gas temperature (EGT).
• Compressor RPM fluctuations

Question 5

When does compressor stall usually happens?

Answer 5

during start-up and acceleration/deceleration

Question 6

________ provides a means for controlling the direction of compressor inter-stage airflow, thus ensuring the correct AOA for the compressor blades.

Answer 6

variable vanes