Starters

Question 1

cause of hot start?

Answer 1

weak battery

Question 2

_____ _____ is when the engine fails to accelerate during a start.

Answer 2

hung start

Question 3

2 common starters used today:

Answer 3

electric and pneumatic

Question 4

If not used for starting ____ ____ are being driven by the engine to produce electricity for aircraft system use.

Answer 4

Starter-Generators

Question 5

TBO for starter generators?

Answer 5

1000 Hour

Question 6

ATA chapter for Starter generator.

Answer 6

ATA 80 (starting)
ATA 24 (Electrical Power)

Question 7

If looking for cracks on starter generator, where is the weakest area?

Answer 7

Splines

Question 8

always inspect brushes for proper ______.

Answer 8

length

Question 9

percentage of brush length for maintenance decision?

Answer 9

25%

Question 10

Safety:

Answer 10

• battery disconnected
• pull cb and put warning flag
• make sure to mark all terminals and wire when you disconnect

Question 11

Once v-band is removed dont let the weight of the starter generator hang off of the drive shaft.

Answer 11

to prevent the shear from breaking

Question 12

Where do you get energy for starting large starter generators?

Answer 12

APU

Question 13

Where do you get air for Pneumatic starters?

Answer 13

• APU
• crossfeed from running engine
• Ground start supply

Question 14

This type of starter is a low pressure, axial flow air motor that has a very high power to weight ratio.

Answer 14

Pneumatic starters

Question 15

Prior to Boeing 787 Dreamliner, what kind of starter do they equipped?

Answer 15

pneumatic air turbine starters

Question 16

For an electric starter to have the same power output as a pneumatic starter, it would be approximately ____ heavier.

Answer 16

5 times

Question 17

How much air required to run a pneumatic starter?

Answer 17

45psi at flow rates 50-100pounds per minute

654 to 1308 cubic per minute

Question 18

The turbine in the starter rotates at ____ - ______ rpm and is geared down by a ratio of 20-30 times to provide the high torque that the engine requires to rotate.

Answer 18

60k to 80k rpm and geared dow by a ratio of 20-30 times

Question 19

These type of starters may have their ___ ______ oil system that requires between 4 to 12 ounces of oil for proper operation. They may also be connected to the main engine oil supply system.

Answer 19

own independent

Question 20

Pneumatic starters will have a _____ _____ _____ and a ____ ____ to monitor the condition of the oil passing through the starter.

Answer 20

MAGNETIC DRAIN PLUG and a CHIP DETECTOR

-must be frequently inspected

Question 21

(1st safety feature) Pneumatic Starters also have a ____ _____ which will break a predetermined gear train induced torque force to prevent damage to the engine.

Answer 21

Shear point

Question 22

(2nd safety feature)
If the starter valve malfunctions and stays open, the air passing through the ______ ______ can only be accelerated up to the point of SUPERSONIC FLOW.

At this point a shock wave forms across the nozzle vane and slows down air to sub-sonic speeds.

Answer 22

Choked (Convergent) nozzles

Question 23

Once the turbine is no longer providing power to the starter and engine reached a preset speed, centrifugal force overcomes the leaf springs and the pawls are thrown outward.

driveshaft is now disengaged from the pneumatic starter.

Answer 23

PAWLS are forced inwards by small leaf springs to engage the SPRAG CLUTCH RATCHET

Question 24

Engine starting conditions:

Check the ____. Prior to starting any aircraft engine, make sure that there is ____ in the engine

Answer 24

oil, oil

Question 25

Engine starting conditions:

Make sure that you have sufficient ____ for the engine run.

Answer 25

fuel

Question 26

Engine starting conditions:

Ensure that all ___ ___ and ____ ____ have been removed

Answer 26

inlet plugs and exhaust plugs

Question 27

Engine starting conditions:

Have someone outside with a _____ _____ and be sure that you both understand hand signals when there is no radio communication. (Avionics are usually off for engine start)

Answer 27

fire extinguisher

Question 28

Engine starting conditions:

Ensure that the area is ____ of any unauthorized personnel.

Answer 28

clear

Question 29

Engine starting conditions:

Make sure that the area behind the aircraft is _____ of people and objects that could be damaged by wind or debris.

Answer 29

clear

Question 30

Engine starting conditions:

Make sure that you are in an area that is _______ for engine run-ups and that it falls within an approved time slot. Failure to obey airport regulations can cost your company a lot of money

Answer 30

approved

Question 31

Engines that use a _____/_____ system to manage powerplant operations will most likely use the computer to start the engines

Answer 31

FADEC / EEC

Question 32

what disconnects the engine from the starter?

Answer 32

pawls

Question 33

how long would you hold the start valve for starting?

Answer 33

almost to idle

Question 34

if starter valve is inop in flight and other engine needs to start. What should you do?

Answer 34

Use ram air to start pneumatic starter