Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

KV-107 Systems > Drive System > Flashcards

Drive System Flashcards

1
Q

What is the purpose of the drive system?

A

Transmit engine torque to the fwd and aft main rotor heads

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What two purposes do the sprag clutches serve?

A

Single engine flight

Autorotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where are the sprag clutches located?

A

Mix box

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the purpose of the aft transmission?

A

Reduce drive speed and transmit it to the vert shaft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the purpose of the fwd transmission?

A

Reduce speed and transmit it directly to the main rotor head via an integral drive shaft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Can the forward and aft blades and rotor heads be interchanged?

A

No, they are similar but spin in opposite directions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does the blower shaft do?

A

Conveys torque from mix box to oil cooler blower fan via a “takeoff”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Are the fwd and aft transmission oil systems together?

A

No, two separate systems which share the same cooler.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which oil system is connected to the part of the blower fan that receives direct airflow?

A

The aft. The fwd doesn’t need direct air because it gets some of its cooling through the oil lines in the tunnel going to the fwd transmission

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How many sync shafts are there?

A

5
4 aluminum
1 steel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Who’s is the #5 sync shaft stainless steel

A

To provide resistance to engine fire or catastrophic engine failure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How are the aft portions of the engines supported?

What has to be done to these shafts after a transmission replacement?

A

Torque tubes

The shafts from the engine need to be dynamically balanced.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is a mixing gearbox?

A

Combines two engine inputs into the input pinion gears and directs their torque to the aft transmission

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What type of oil cooler does the 107 have?

A

Radiator type. Draws air, not blows it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the speed reduction in the mix box?

A

7.6:1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How are the mix box and aft transmission mounted in relation to each other?

A

Mounted together. Two separate functions but one integral unit. Lubricated by the same sump.

17
Q

What is the speed reduction on the aft transmission?

A

9.7:1

18
Q

What does the aft transmission house?

A

Input pinion gear and a sun and planet gear reduction

19
Q

What imparts lift to the fuselage? How?

A

Thrust deck in aft pylon. Very shaft is splined to input pinion gear in aft transmission. Very shaft is bolted to thrust deck. Very shaft is not hard mounted to aft transmission, allowing lift to be imparted on the airframe at the thrust deck

20
Q

What accessories are mounted on the aft transmission?

A

2 AC generators
Oil pump
Nr tach gen
Rotor over speed sensor

21
Q

What is driven by the aft transmission oil pump?

A

Nr tach gen

Rotor over speed sensor

22
Q

How is the vert shaft supported on the top end?

A

By a thrust bearing and slider guide.

23
Q

How are the sync shafts connected?

A

Thomas couplings

24
Q

What are Thomas couplings mounted to and what’s their purpose?

A

Lord mounts

To allow for bending and twisting of the airframe

25
Q

What is the forward transmission speed reduction?

A

9.7:1

26
Q

How is lift imparted on the fwd transmission?

A

The drive shaft to the rotor head is an integral part of the planetary gear reduction so all lift is imparted directly on the fwd transmission.

27
Q

What is mounted on the fwd transmission?

A

2 hydraulic pumps

Transmission lubrication pump

28
Q

What type of magnetic chip plugs do the fwd and aft transmissions have?

A

Self sealing Bayonet style

29
Q

Does each transmission have its own chip detector warning light?

A

No. Each has its own mag plug, but they share a common master caution warning light “CHIP DETECTOR”

30
Q

How do the fwd and aft transmission transmit pressure and temp?

A

Thermoswitch and temp bulb

Pressure transmitter and warning unit

31
Q

At what oil temps is transmission oil allowed to bypass the oil cooler?

A

130 - 160F

32
Q

At what pressure differential will the transmission oil cooler bypass should the cooler become clogged?

A

40 PSI

33
Q

When will the XMSN OIL PRESS master caution light come on?

A

Below 20 PSI

Above 85 PSI

34
Q

How is oil pressure indicating powered?

A

26 VAC 400hz

35
Q

When will XMSN OIL TEMP master caution illuminate?

A

115C or greater

RFM states max oil temp 110C

36
Q

What is the purpose of the rain shields?

A

Protect flight controls from inclement weather

KV-107 Systems (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions