226

Question 1

Whattt is amt 226

Answer 1

A/C Auxiliary power unit and unducted fans

Question 2

Whatt ata chapter is apu

Answer 2

49

Question 3

Is a small gas turbine engine
located in the tail of an aircraft.
SUPPLIES pneumatic bleed air and
electrical power for the different
aircraft systems.

Answer 3

APU

Question 4

why is it called auxiliary?

Answer 4

Supplementary /
supporting

Question 4

it consists of impeller and diffuser

Answer 4

Compressor

Question 4

A device that
produces usable power
The APU is a small turbine engine
that generates:

Answer 4

Power unit

Question 4

purposeof an APU.

Answer 4

Provides power when the big engines cant
Act as an emergency power source
in flight
If generators on the main engines
fail, the APU can provide:
Backup electrical power
Sometimes backup air for
pressurization (depending on
aircraft type)
This enhances aircraft safety and
redundancy.

Question 5

power units runs?

Answer 5

ELectrical power
pneumatic power

Question 5

3 main sections of an apu

Answer 5

Accessory gearbox section
bleed section
power section

Question 6

This section developed the
engine rotational power. Drives the compressor,
turbine and the gearbox

Answer 6

Power section

Question 6

Combustion chamber has?

Answer 6

Annular type or can type reverse flow type

Question 7

IT consist of rotor and stator

Answer 7

Turbine

Question 7

drives all
APU accessories like
FUEL PUMP
OIL PUMP
GENERATOR

Answer 7

Accessory gearbox section

Question 8

Bleed section components?

Answer 8

Load compressor
Inlet guide vane
Surge protection
supply bleed air
supply electrical power

Question 8

WHAT ARE THE SYSTEMS THAT
USES BLEED AIR

Answer 8

Air conditioning system
Engine starting system

Question 9

-Bleed air is used to pressurize the aircraft cabin to maintain
a safe and comfortable environment for passengers and
crew.

Answer 9

cabin pressurization

Question 9

-Such as navigation Systems,
Communication Systems and Flight Data
Monitoring.

Answer 9

Avionics and flight instruments

Question 10

-Bleed air is used to prevent ice buildup on critical
components, such as the leading edges of the engine
nacelle and other surfaces

Answer 10

Anti icing

Question 11

-Some food preparation and heating
equipment in the galley may run on
electrical power from the APU.

Answer 11

Galley equipmenrt

Question 12

is a mechanical-to-electrical
power unit that:
Is mounted on the APU gearbox
Is driven by the rotating shaft of the
APU turbine

Answer 12

Ac generattor