KEYTERMS - AIR & AERODYNAMICS

Select ALL that apply...

AIR FLUID is:

• Earth's Atmosphere

• An invisible gaseous substance surrounding Earth

• A mixture of mainly Oxygen & Nitrogen

• Anything that flows in air pressure

Weight is the force of _ _ _ _ _ _ _. It

acts in a downward direction,

toward the center of the Earth.

Weight is the force of it. It

acts in a downward direction,

toward the center of the Earth.

• GRAVITY

• THRUST

• DRAG

• LIFT

Select ALL that apply...

LIFT is:

• A force that acts a a right angle to the direction of motion through the air.

• Created by difference in air pressure.

• The force that propels a flying machine.

• The force of gravity on a flying object.

Which is the CORRECT definition of

THRUST?

• The invisible gaseous substance surrounding the Earth.

• It acts in a downward direction, toward the center of the Earth.

• Thrust is the force that propels a flying machine in the direction of motion.

• The force that acts at a right angle to the direction of motion through the air.

Select ALL that apply...

DRAG is:

• The force that acts at a right angle to the direction of motion through the air.

• The force that acts opposite to the direction of motion.

• The force that moves something forward.

• Caused by friction and differences in air pressure.

BERNOULLI’S PRINCIPLE

States that:

• As fluid moves around an object, creates similar pressures on that object. Faster air means more pressure. The key to flight is creating pressure downwards on the wing to keep the object in the air.

• Movement around an object, creates similar pressures on that object. Slower air means less pressure. The key to flight is creating pressure upwards on the wing to keep the object in the air.

• As fluid moves around an object, creates similar pressures on that object. Slower air means less pressure. The key to flight is creating pressure upwards on the wing to keep the object in the air.

• As air moves around an object, it creates different pressures on that object. Faster air means less pressure. The key to flight is creating pressure upwards on the wing to keep the object in the air.

Select ALL that are true about

PROPULSION

• The force that moves something forward.

• It acts opposite to the direction of motion.

• It acts at a right angle to the direction of motion through the air.

• A propulsion system is an engine that produces thrust to push an object, such as an airplane or rocket, forward.

_ _ _

_ _ _ _ _

is the invisible gaseous substance surrounding the Earth. A mixture of mainly oxygen (O2) & nitrogen (N).

_ _ _ _ is the force that acts at a right angle to the direction of motion through the air. It is created by differences in air pressure.