Factors affecting aircraft propulsion system Flashcards
1
Q
How does temperature affect thrust
A
Thrust decreases as temperature increases
2
Q
How does altitude affect thrust
A
Thrust decreases with altitude
3
Q
How does airspeed affect thrust
A
Thrust decreases as airspeed increases
The ram effect increases as airspeed increases
4
Q
How does engine speed affect thrust
A
An engine need to be kept at its optimum aerodynamic efficiency in order to be the most fuel efficient and achieve its optimal compression.
5
Q
How does fan efficiency effect thrust
A
A turbofan combines features of turbo jet and turboprop
A turbo jet and turbofan rated to the same thrust will still have different efficacy because a turbo fan is more efficient
