Advanced Aircraft Systems Quiz 1

The basic principle of the airplane turbine engine is identical to any and all enginesthat extract energy from chemical fuel. The basic 4 steps for any internal combustionengine are:

1. Intake of air 2. Compression of the air 3. Combustion, where fuel is injected and burned to convert the stored energy. 4. Expansion and exhaust, where the converted energy is put to use.

The _______________ is responsible for providing the combustion chamber with compressed air in an efficient manner.

Compressor

Once the air flows through the turbine, it enters the combustion section, also called the combustor. The combustion section has the difficult task of controlling the burning of large amounts of fuel and air.

False

The compressor section of the gas turbine engine has the task of producing usable output shaft power to drive the propeller.

False

Where is the CRJ 200 APU located ?

Inside a fire proof enclosure in the aft equipment bay

In a turbojet engine with a high and low pressure compressor, what order is the low pressure compressor and low pressure turbine in?

Low pressure compressor is in the very front and the low pressure turbine is all the way in the back.

The accessory gear box is driven by the

N2 rotor

In the graphic, what is the position of the APU power Fuel switch/valve.

Pump ON/SOV Open

What accessorizes are driven by the APU gear box ?

The AC generator, The FCU ( fuel control unit ) , oil cooling fan, oil pump, and the electric starter

The gas turbine is an internal combustion engine that uses air as the working fluid.

True

In a turbofan engine, if a conversion from pressure to velocity is needed a ____________duct is shaped like a funnel in reverse ( larger to smaller area), to achieve this.

a convergent duct is used

Describe the working flow of a gas turbine engine. The gas turbine... Question 9 options:is an internal combustion engine that uses air as the working fluid.extracts chemical energy from fuel and converts it to mechanical energy.uses gaseous energy of the working fluid (air) to drive the engine and propeller,which, in turn, propel the airplane.all of the above are correct.

all are correct

In the graphic, what source is supplying high pressure air to the packs?

apu

A large mass of air must be supplied to the turbine in order to produce the necessary power. This mass of air is supplied by the ____________________, which draws the air into the engine and squeezes it to provide high-pressure air to the turbine.

compressor

The heart of the gas Generator consists of these three main components

compressor, combustor, turbine

A single stage of axial compression consists of a set of rotating stator vanes to increase pressure followed by rotating blades attached to a rotating disk to diffuse the air.

false

In a normal start the APU is turned ON after the start button is depressed.

false

In an axial flow compressor, each stage incrementally decreases the pressure from the previous stage, and the airflow is 90 degrees from engine axes.

false

In an axial turbine engine flow compressor, each stage incrementally increases primary heat exchanger air flow before it enters the expansion turbine.

false

In an centrifugal flow compressor, each stage incrementally decreases the pressure from the previous stage, and the airflow is 90 degrees from engine axes.

false

Once the turbine engine air flows through the diffuser, it enters the combustion section, also called the compressor.

false

The basic 4 steps for any internal combustion engine are:1. Intake of air (and possibly fuel).2. Compression of the air (and possibly fuel).3. Combustion, where fuel is injected with the intake air and burned to convert the stored energy.4. Expansion cooling is exhausted to water separator

false

The gas turbine is an external combustion engine that uses air as the working fluid to create thrust through the rotation of the compressor.

false

The main function of the turbine in the turbofan engine is to create thrust.

false

The turbocharger is typically housed inside a turbine engine that contains a small turbine connected by shaft to a compressor. Aircraft exhaust is sent directly into the combustion chamber, where the turbine converts it into heat energy which in turn spins the impeller wheel and compresses exhaust air.

false

The compressor section of the gas turbine engine has the task of producing usable output shaft power to drive the propeller.

false (the turbine section)

Where does the APU starter receive the power to start?

from a dedicated battery

Which components are on the N2 spool of a triple spool engine?

intermediate pressure compressor intermediate pressure turbine

In the graphic, where is the high pressure air sourced from?

left and right engine

In the graphic, where does the APU get its fuel from?

main tanks

In the graphic, what is the position of the APU load control valve.

open

The APU power fuel valve must be _______________to start the APU.

open

If the free turbine (turbo prop) engine power turbine failed this may cause operational problems associated with the....

prop

quiz 2

quiz 2

On a twin spool engine, The N1 and N2 shafts are connected by a...

they are independent

A turbine drives the compressor section of a turbine engine.

true

In a turbofan engine, the size and shape such as convergent or divergent, of the ducts through which the air flows affect various changes.

true

In the image attached, the AC External Power is ON.

true

The Low Pressure turbine is connected to the low pressure compressor via a shaft.

true

The air inlet duct must provide clean and unrestricted airflow to the engine.

true

The basic principle of the airplane turbine engine is 1. Intake of air 2. Compression of the air 3. Combustion, where fuel is injected and burned to convert the stored energy.4. Expansion and exhaust, where the converted energy is put to use to drive compressor.

true

The convergent duct operates in reverse of the divergent duct.

true

The gas turbine is an external combustion engine that uses air as the working fluid to create thrust through the rotation of the compressor.

true

The main function of the turbine in the turbofan engine is to drive the associated compressor spool.

true

The turbine section of the gas turbine engine has the task of producing usable output shaft power to drive the compressor and all engine accessories. It does this by expanding the hightemperature, pressure, and velocity gas and converting the gaseous energy to mechanical energy in the form of shaft power.

true