15.1* Flashcards
What is newtons first laws of motion?
An object at rest will remain at rest or a body in motion will remain in motion unless acted upon by an external force
Which law describes the production of thrust?
Newtons 2nd law
What are the two forms of mechanical energy?
Potential energy and kinetic energy
What is the equation for kinetic energy?
KE=1/2 Vsquared
What is the brayton cycle?
The working cycle of a gas turbine engine
Apart from thrust what else does an engine provide?
Bleed air
Hydraulic power
Electrical power
Which engine is more efficient. Turbo jet or turbo fan?
Turbo fan
85% efficiency compared to turbo jet’s 50%
How does a turboprop create thrust?
By the small acceleration of a large mass of air
Turbofans are usually of what configuration?
Twin or triple spool engines
How does a turbo fan create thrust?
It accelerates a high airflow to a relatively low outlet velocity using the fan and accelerates a small airflow to a high velocity in the core
