Aerodynamics
The control surface that controls Yaw
Rudder
The B-25 used what piston-engine cylinder layout?
Radial
A gas turbine engine that spins a propeller
Turboprop
Why can't a Jet work in Space?
Because there is no air/Jets need air to operate
A rocket Works in space because it carries what?
Oxidizer
Airfoils use the _____ principle to produce lift
Bernoulli
A propeller blade is shaped like what type of structure to provide thrust
Airfoil
A gas Turbine engine that powers a tank or a helicopter is a.....
Turboshaft
In a turbojet, all of the incoming air goes through where?
The Core
What type of rocket engine does a model rocket have?
Solid fuel rocket engine
Name one type of parasite drag.
Skin-friction drag, form drag, or interference drag
What can you add to a piston engine to improve performance at high altitude?
Turbocharger/Supercharger
Which part in a gas turbine engine raises the pressure of the air?
Compressor
The F-104 starfighter was a 2nd generation fighter bomber that acheived high speeds. It most likely had what type of engine?
Turbojet
True/False: Rockets need air to push against to make thrust
False
This structural feature in the wings maintains roll stability. What is it called?
Dihedral
Why do propellers have a twist from root to tip?
Because the tip moves faster than the root.
What part of a gas turbine engine extracts energy from the hot gas that comes from the combustion chamber and drives the compressor
Turbine
A RAMjet does not work while standing still. Why?
It needs forward speed to compress air
Why are rockets used to get into orbit instead of jets?
They can work without atmospheric pressure / They carry their own oxidizer
Wave Drag
When a propeller spins so fast that the tip is travelling at transonic speeds, the propeller becomes a lot less efficient. What causes this
Wave Drag
Why do all turboprop engines have a gearbox
To reduce the RPM of the propeller
This aircraft has a jet engine where there are 2 mass flow units of air going around the core for every 10 mass flow units of air that go through it. What generation is this aircraft?
4th/5th Generation
Give one advantage of hydrogen as a future fuel for propulsion.
It is very light
Very reactive
Gives a lot of energy when combusted
It offers 3 times the energy per unit mass
It is very efficient