Sheet 2

Question 1

Answer 1

To convert pressure and heat energy into maximum kinetic energy

Question 2

Answer 2

A convergent-divergent nozzle

Question 3

Answer 3

Translating sleeves and blocker doors

Question 4

Answer 4

Anti-icing and anti-microbiocidal agents

Question 5

Answer 5

To prevent sludging

Question 6

Answer 6

High viscosity synthetic oil

Modern gas turbine engines = low viscosity synthetic oil as not heavily loaded gear train

Turbo-prop engines = higher viscosity synthetic oil due to large, heavily loaded propeller reduction gears

Question 7

Answer 7

Pressure regulated and full flow

Question 8

Answer 8

In the pressure line, after the pressure pump

Question 9

Answer 9

A De-aerator

Question 10

What is used to detect the presence of Ferrous debris in a scavenge return?

(a) Magnetic chip detector
(b) Coarse mesh oil strainers
(c) Last chance oil filters

Answer 10

(a) Magnetic chip detector

Question 11

Answer 11

Full Authority Digital Engine Control

Question 12

Answer 12

Plunger and Gear type

Question 13

Answer 13

15:1

Question 14

Answer 14

A synchro

Question 15

Answer 15

With high pressure delivery air

Question 16

Answer 16

Internal cooling with extensive film cooling

Question 17

Answer 17

They have a better power to weight ratio than electric starters

Question 18

Answer 18

Between 18% and 25% RPM

Question 19

Answer 19

4 joule is supplied by 115V AC and 20 joule is supplied by 28V DC

Question 20

How are High-Tension ignition leads protected from overheating?

(a) They are located in cool areas of the core engine
(b) They are cooled by Fan air fed into their shrouds
(c) They are wrapped in Asbestos flexi-wap

Answer 20

(b) They are cooled by Fan air fed into their shrouds