Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

T38C Systems > SY1113-4 Engine System > Flashcards

SY1113-4 Engine System Flashcards

1
Q

Engine Type

A

J85-GE- 5 Turbojet

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

How many stages and what type of flow is the engine

A

Eight Stage, Axial Flow

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

Thrust produced in MIL and MAX

A
  • 2200 lbs

- 3300 ilbs

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

avoid throttle movement from idle to max less than ___ secs

A

1 sec

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

Front Frame does

A

Directs Flow of Air at Optimum Angle Using the Inlet Guide Vanes

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

Compressor does

A

Supplies Large Masses of Compressed Air to the Combustion Section

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

8 th Stage Compressor Air Operates the Following Engine and Aircraft Pneumatic Systems

A

-Inlet guide vanes
-Bleed Air valves
-Defog
-Canopy seal
-A/C
-Pressurization
Hydraulic reservoir px
-engine anti-ice

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

Combustion Section use how much of the air for combustion

A

25%

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

Afterburner accelerates exhaust by how mcuh

A

5-40%

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

What is mounted to engine gearbox (TOMAN)

A
  • T5 alternator
  • Oil Pump
  • Main Fuel Control (MCF)
  • Afterburner Fuel control
  • Nozzle Actuator
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Oil Pump

A
  • 4 quarts (expansion space of 1 qt)
  • 1 pint per hour max oil consumption
  • House T5 Alt and Tach generator
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Main Fuel Control (MFC)

A
  • Hydro mechanical
  • Prevent Flameouts/ Compressor stall/ overtemp by controlling fuel
  • Variable geometry system ( Inlet guide vanes, Air bleed valves
  • Reduce fuel at low power settings
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

MFC controls fuel given by

A
  • discharge px
  • inlet temp
  • RPM
  • Throttle Position
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Afterburner sequence

A
  • Throttles Max
  • Fuel thru Pilot spraybars
  • T5 sences increase in temp and takes over and over 97%
  • Main spraybars activate
  • AB TIME
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

T5 controls AB by

A
  • Discharge Pressure
  • Throttle Position (over 97%)
  • Nozzle Actuator (overrides)
  • Temperature
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Overspeed Governor after MFC

A

Monitors the Maximum Speed of the Engine and Reduces Fuel Flow as Needed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

T2 Sensor

A

Limits Fuel Flow as a Function of Inlet Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Variable Area Exhaust Nozzle controls EGT via

A
  • Hydromechanical System and the T5 System
  • IDLE to 97% Controls the Nozzles to Maintain EGT, Maxing to Full Closed at 97%
  • When Retarded From MAX Through 97%, Closes Nozzles
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

T5 system controls when

A

-Beyond 97% RPM Opens the Nozzles to Ensure EGT Limitations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Anti-Ice is located where

A

Bullet Nose and Inlet guide vanes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Anti-Ice comes from where and EGT raise/ power change

A
  • from 8th stage compressor
  • Between 94% - 98% RPM, Increase in EGT of 15C Can be Expected
  • Requires 80% RPM (Automatically Turns on at 65%)
  • 9% Loss of Thrust at MIL and a 6.5% Loss of Thrust in MAX
22
Q

When to use Anit-Ice

A

Should be Used Below 32F and in Visible Moisture or High Humidity

23
Q

What are the 7 parts of the engine, in order (FCMCTEAN)

A

Front frame, compressor, main frame, combustor, turbine, exhaust, afterburner, nozles

24
Q

What is the function of the front frame section?

A

Admit air into compressor section and direct airflow into the first stage compressor at proper angle

25
What is the function of the compressor section?
Supply large masses of compressed air into the combustion section.
26
What is the function of the main frame section?
Primary structural component and divergent diffuser passage for compressed air entering combustion section
27
What is the function of the combustion section?
To add fuel to the compressed air and ignite it
28
What is the function of the turbine section?
Extract energy from the high-velocity airstream to drive compressor and engine accessories
29
What is the function of the exhaust section?
Smooths out airflow leaving turbine and entering tailpipe, contains AB fuel and lighting components and T5 sensor
30
What is the function of the afterburner section?
augment thrust of main engine 5-40% at a cost of of twice the fuel consumption per pound of thrust
31
What is the function of the variable area exhaust nozzle?
Provides an efficient exit passage that opens and closes to optimize engine efficiency and control EGT
32
What is the purpose of the variable geometry system?
Inlet guide vanes direct incoming air to the optimum AOA
33
What are the operating characteristics of the variable geometry system?
At low RPM, bleed valve opens to allow compressed air escape the 3rd-5th stages of the compressor
34
What is the purpose of the engine anti-ice system?
To prevent ice build-up on the inlet vanes and bullet nose of the engine
35
What are the operating characteristics of the engine anti-ice system?
Directs 8th stage compressor air; automatically comes on with right AC failure
36
What is the purpose of the engine accessories?
Converts engine power into usable power for aircraft systems
37
What are the operating characteristics of the engine accessories?
Divided into 2 sections - airframe accessories and airframe mounted gearbox. Driven by a power takeoff (PTO) from engine compressor drive shaft
38
What is the purpose of the fire detection system?
Warn the pilot of a high-temperature condition in the engine bay
39
What are the operating characteristics of the fire detection system?
Cannot be dimmed, independent for L and R, operates on DC power, sensors are pneumatically operated through inert gas, can respond to average or highly localized temps
40
What is unique about the tachometer?
Only independently operated indicator in the whole jet
41
What are the three failure modes of the tachometer?
broken wire (0%), sheared oil pump shaft, EED failure (FAIL)
42
What are the AC-powered instruments?
hydraulic pressure, engine tachometer, fuel flow, fuel quantity, oxygen quantity, oil px
43
What are the engine-oil restrictions for zero-g and neg-g flight?
10 seconds and 30 seconds
44
What are the DC-powered instruments (NEEF)?
nozzle, EED, EGT, flaps
45
What purpose fo the inlet fuide vanes serve?
Reduce possibility of compressor stalls
46
How will anti-ice be affected with an AC power failure?
fully effective (automatic) above 80% RPM
47
What atmospheric conditions should you use anti-ice?
Temp near or below 32*, visible moisture or high humidity
48
What is the primary advantage of afterburners in engine design?
High thrust for low weight
49
Name 3 properties of the T5 system and nozzles
Nozzles close until 97%, T5 operates nozzles to maintain 630-650 EGT in MAX, and T5 system's purpose maintain EGT within limits
50
What are two ways you can observe the T5 system working?
Observe EGT between 630 and 650 and check nozzles open while advancing throttle from 97% to MIL
51
What is the T5 electrical source?
Independent AC alternator

T38C Systems (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions