TurboProps

Question 1

What is added to the core turbojet to make it a turboprop?

Answer 1

A propeller stuck on the front. The turbines, in addition to powering the compressor, go past that to a gear box that moves the prop.

Question 2

What engine is better for low altitudes and low speeds?

Answer 2

Turboprops

Question 3

Why do turboprops have a low exhaust velocity?

Answer 3

Because most of the energy is extracted by the power turbine to turn the prop, which generates almost all the thrust. So turboprops only produce a little bit of jet thrust

Question 4

What two types of turboprop engines are there?

Answer 4

Direct Drive: Compressor and power (prop) turbine are the same turbine

Free Turbine: The compressor turbine and power turbine are seperated.

Question 5

What engine is the turboshaft (helicopter) similar to?

Answer 5

The turboprop. It differs in the function of the turbine shaft.