Talking about a turbine...

Flying with a piston engine aircraft...

1 if it is equipped with a compressor it can fly at higher altitudes

2 the compressor can be moved mechanically or through a turbine 

3 the power of the engine depends on the altitude and the speed of the aircraft

Diffuser

1 decreases the air inlet speed to the compressor

2 increases the pressure of the air

3 increases the density of the air

The propulsive power is:

Which of the statements is true?

On the following statements,

1 The rotation speed of a propeller is limited by the air compressibility at the tip of the blades.

2 The rotation speed of a propeller is limited by the diameter of the propeller and the flight speed of the aircraft.

3 The area of the blades of a propeller determines the capacity of this to convert the power of the motor into a thrust.

In order to design a new engine with x3 the thrust of the actual engine.

Which of the following statements is true?

1 each stage of an axial compressor consists of a rotor AND a stator

2 the axial compressor has a better performance than the centrifugal compressor

3 the blades in the first stages of an axial compressor are larger than those of the last compression stages.

In order to increase a rocket's thrust with an adapted nozzle, we must...

What is the by-pass ratio in a turbofan?