Aerospace & Aviation Ch. 2 Study Set

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Pitch

Vertical motion of an aircraft.

Lift is opposite of...

Weight

Symmetrical Airfoil

When an airfoil has identical upper and lower surfaces, it is symmetrical and produces no lift at an AOA of zero degrees. The wings of very high performance aircraft tend to be symmetrical.

How do flying fish fly?

Wind passing under and over the wings creates lift, which propels the fish through the air.

Thickness

(n.) the distance between the opposite edges of something; how thick something is

Drag

Resistance of the air (technically a fluid) against the forward movement of an airplane.

Camber

A measure of the curvature of the airfoil.

Airfoil

Any surface, such as a wing, which provides aerodynamic force when it interacts with a moving stream of air. Basic form of the wings.

Yaw

A side-to-side motion of the nose of the aircraft.

Asymmetrical Airfoil

Airfoil that dose not have the same shape (camber) on top and bottom. Less stable, More lift

Glider

An aircraft that is designed to fly without an engine.

Bernoulli's Principle

As the speed of a fluid increases, its pressure decreases.

Otto Lilienthal

Built gliders that could be piloted

Thrust is opposite of...

Drag

George Cayley

Flew the first successful glider

Max Camber

Max distance between mean camber line and chord line

Mean Camber

The Mean Camber Line is a line drawn halfway between the upper and lower surfaces. The mean camber is used to define the upper and lower part of an airfoil.

Angle of Attack

The acute angle between the direction of the relative wind and the chord of an airfoil.

Roll

The clockwise or counterclockwise rotating motion of an aircraft.

Leading Edge

The front, usually rounded, edge of an airplane wing or airfoil.

Trailing Edge

The last point on an airfoil that interacts with the airflow around the wing.

What was Da Vinci's result of his research?

The orinthopter

What idea did Da Vinci develop?

The parachute

Thrust

a force that moves an object in the direction of motion (prop. jet engine, or rocket)

How does angle of attack affect lift?

as the angle of attack increases, lift increases

What caused Da Vinci's interest in flight?

birds

Chord

connects leading edge to trailing edge

aerodynamic stall

critical angle of attack

Daedalus and Icarus

flew too close to the sun

What are the four forces of flight?

lift, weight, thrust, and drag

Orville and Wilbur Wright

made the first powered, controlled flight

Weight

the force of gravity on an object

Lift

the force that holds an airplane in the air (wings)

Planform

the shape of the wing viewed from above

What is gliding?

to move smoothly and continuously along, a glider cannot create thrust

Span

wingspan


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