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T38C Systems > SY1101 System Overview > Flashcards

SY1101 System Overview Flashcards

1
Q

T38C has ___ Generators that are mounted where?

A

two, left and right located on gearboxes

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2
Q

DO the generators produce AC or DC? What changes the AC to DC?

A
  • AC (alternating current)

- The Transformer rectifier units (TRUs 2)

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3
Q

How many buses do the TRUs power? What powers these buses when TRUs are offline?

A
  • 2 essential and 1 non-essential

- 24 V lead acid battery

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4
Q

Other than the DC buses what other bus does the battery power? (What’s on this bus?)

A
  • The Battery Bus

- Static inverter, engine start controls, AB ignition

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5
Q

Fuel System hold ____ Gallons/ lbs?

A

583, (3906 ilbs) via single point refueling

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6
Q

How much less fuel do you get with manual refueling?

A

6 Gallons/ 40 lbs less

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7
Q

What does the Utility hydraulic system control

A

flight controls, landing gear, speed brake, nosewheel steering and stability augmentor

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8
Q

What does the flight control hydraulic system control

A

Ailerons, rudder, horizontal stab

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9
Q

What is airframe constructed of?

A

Aluminum and aluminum-magnesium alloy

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10
Q

What provides the force for the flight controls to move?

A

Dual hydraulic systems

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11
Q

Shape of the fuselage

A

Area rule (coke bottle)

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12
Q

How many AC generators are there?

A

2

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13
Q

Where are the 2 AC generators mounted and located?

A

Mounted at the rear on airframe mounted gearboxes

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14
Q

The AC generators normally carry ___ the total electrical load

A

half

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15
Q

Can one AC generator carry the entire electrical load?

A

Yes

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16
Q

What supplies DC power?

A

2 Transformer Rectifier Units (TRU)

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17
Q

What does the TRU do?

A

Converts AC to DC

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18
Q

How many and what types of buses do the TRU’s power?

A

2 essential DC buses and 1 non-essential DC bus

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19
Q

Where do the TRU’s get their power from?

A

AC electrical buses

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20
Q

What provides DC power when the engines are not running?

A

24-volt lead-acid battery

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21
Q

What 3 items does the battery provide power to the battery bus for?

A

Static inverter, engine start control, and afterburner ignition control

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22
Q

External power provides what type of power to the T-38?

A

AC which powers the TRUs providing DC power

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23
Q

Where is most electrical equipment located?

A

Nose section

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24
Q

What 3 pieces of electrical equipment are located in the nose section?

A

Battery, TRUs, and COMM/NAV

25
Q

How is the elctrical equipment in the nose cooled on the ground and in the air?

A

Electric fan on the ground, ram air and cockpit air when airborne

26
Q

What do the engines do besides provide thrust?

A

Supply power to accessories included the airframe mounted gearboxes

27
Q

Each engine continues what 2 self-contained systems?

A

Fire and Lubrication

28
Q

What does the T-38 require for engine starting?

A

Low-pressure air from a JASU, APU, or CASS

29
Q

What is the quantity(lbs, and gallons) of the fuel system?

A

583 gallons, 3,906 lbs

30
Q

How much fuel is lost using the “over the wing” method?

A

6 gals (40 lbs)

31
Q

T/F Each engine has its own independent fuel supply system.

A

True

32
Q

What is the purpose of the fuel crossfeed valve?

A

Connect the engines to either fuel system

33
Q

What are the names of the 2 fuel pumps for each engine?

A

Electrically-powered boost pump and engine-driven fuel pump

34
Q

Can the engine operate without the engine-driven fuel pump?

A

No

35
Q

Can the engine operate without the boost pump?

A

Yes, via gravity feed

36
Q

Where are all fuel system switches located?

A

FCP

37
Q

What are the 2 hydraulic called?

A

Flight Control

Utility

38
Q

Are the flight system and utility system independent?

A

yes

39
Q

The flight hydraulic system is powered by which side?

A

Right engine

40
Q

The utility hydraulic system is powered by which side?

A

Left Engine

41
Q

If 1 of the 2 hydraulic systems fails, will the flight controls continue to be powered?

A

Yes

42
Q

Which hydraulic system powers the wheel brakes?

A

Its own independent system

43
Q

What are the 4 other systems (besides flight controls) powered by the Utility hydraulic system?

A

Landing gear, speed brake, NWS, and stability Augmentor system

44
Q

What are the 3 main unsafe gear warnings for the gear system?

A

Red light in handle, aural tone, GEAR on HUD/MFD

45
Q

Does the alternate gear extension work without electricity or hydraulics?

A

Yes

46
Q

Where is the alt gear extension handle located and how does it work?

A

Front cockpit, gravity/slipstream

47
Q

What system operates the speed brake and how is it controlled?

A

Hydraulic system, DC electric switch

48
Q

What 2 conditions will disengage NWS?

A

Start button pressed, AB selected

49
Q

What two things have to be on for the Stability Augmentation System (SAS) to work?

A

EGI switch on AAP on; yaw damper switch

50
Q

What is the purpose of the SAS?

A

Stabilize aircraft about the vertical axis

51
Q

How are the FCP and RCP controls connected?

A

Mechanically

52
Q

What do the flight controls connect to to actuate the control surfaces?

A

Connected by cables and pushrods to hydraulic servo valve

53
Q

How many electric flap motors are there?

A

2

54
Q

If one electric flap motor fails, how will both flaps still come down?

A

yes by the Mechanical connection with rotary shaft

55
Q

What are the 5 main functions for bleed air in the T-38?

A

Pressurization, air-conditioning, defogging, G-suit, and pressurize hydraulic reservoirs

56
Q

What occurs automatically when canopies are closed and locked?

A

Pressurization

57
Q

What happens to the bleed air used to pressurize the cockpit?

A

It is pre-cooled by the AC unit

58
Q

Which cockpit contains all of the environmental controls?

A

FCP

59
Q

What are the 4 main components of the avionics suite?

A

HUD, UFCP, MFD, EED

T38C Systems (15 decks)

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