week 5

Question 1

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

Answer 1

compressor stall / surge

Question 2

Axial compressors work more efficiently at ____ RPM’s than centrifugal compressors.

Answer 2

Lower RPM

Question 3

When do compressor stall occur?

Answer 3

occurs most frequently whenever there is an unusually high compressor RPM

Question 4

______ are vulnerable to stall primarily during start-up and during acceleration/deceleration conditions

Answer 4

Compressor

Question 5

_____ are automatically regulated in pitch angle by means of the fuel control unit.

Answer 5

Variable vanes

Question 6

provides a means for controlling the direction of compressor inter-stage airflow, thus ensuring the correct angle of attack for the compressor blades and reducing the possibility of compressor stall.

Answer 6

Variable vanes