GTE intensive 1 AERO

EPR is a

Ratio between exhaust pressure and intake pressure

A compressor stall:

May only affect one stage or several stages of a compressor.

A turbine stage consists of

A rotor and a stator

If a gas turbine engine were perfectly efficient, which condition would exist in the compressor stage?

Entropy remains constant

An experimental truboprop aircraft is expected to operate on unpaved runways such as dirt, sand, gravel, or damaged runways. What inlet type to be used?

Turboprop Filter/Separator

During engine start, the engine catches fire. What should be done immediately?

Turn off the fuel and continue engine rotation with the starter

A typical APU can provide:

All of the above

Nozzle guide vanes are fitted before the turbine:

To increase the velocity of the gas flow therefore reducing its pressure

A cannular combustion system is:

A set of flame tubes enclosed in a common air casing

During the compression phase of a gas turbine engine operating under ideal Brayton cycle assumptions, which thermodynamic process best describes the behavior of the working fluid?

Isentropic process, where compression occurs adiabatically with no change in entropy

Flying at high altitude with low engine speeds risks of this phenomenon happening

Lean die out

Which turbine cooling method is used only on stationary nozzle vanes made of porous high-temperature material?

Transpiration Cooling

A rocket moves at a constant velocity of 1,080 kph at sea level with a propulsive efficiency of 38%. Determine the Mach number at the exit of the rocket nozzle.

3.76

In a turbo-fan engine, the fan speed is controlled by:

The turbine

A “Hung Start” is indicated by:

High E.G.T. - idle fuel flow - low R.P.M.

A turbine blade that uses the change of airflow to turn the disk

Impulse

The exhaust gas temperature (EGT) indicator on a gas turbine engine provides a relative indication of the

Turbine inlet temperature.

An engine suitable for high thrust, single use cases such as missiles or JATO Boosters

Solid Rocket Motor

The inlet's cross section should be _________ if the engine is expected to operate in the subsonic region

Divergent

Which part of an axial flow compressor would static pressure increase?

Both in the rotors and stators

An experimental aircraft is to be made with a planned cruising speed of 0.85 mach. What is the best jet engine type to be used?

Turbofan

Which of the following statements correctly distinguishes a scramjet from a ramjet?

A scramjet allows combustion to occur at supersonic airflow velocities, while a ramjet slows the airflow to subsonic speeds before combustion.

A gas turbine engine intakes 55 kg/s of air and burns 1.5 kg/s of fuel while flying at 220 m/s. The exhaust velocity is 700 m/s, which exits through a 0.18 sq.m. nozzle at an exit pressure that exceeds the ambient pressure by 18 kPa. Determine the net thrust generated by the engine.

30.69 kN

What happens to the airflow as it enters the combustion chamber?

A small part of it is mixed with fuel and burned while the bigger part is used to cool the metal components

What is the highest thrust setting that can be used continuously without a time limitation?

Max. Continuous thrust