Introduction to Aerodynamics & Aviation Essay

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Aviation Studies-Intro to Aerodynamics
“Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.”
― Leonardo da Vinci
Vlad Zhelezarov

Basic Wing Diagram
• Chord
• Camber
• Leading Edge
• Trailing edge of a wing or mainplane

Objectives
• State in simple terms, Bernoulli’s Principle and establish its relationship to wing shape and the production of lift
• Identify the four basic forces on an aircraft
▫ Lift
▫ Weight
▫ Thrust
▫ Drag

• State the five factors that affect aerofoil lift and their relationship

Centre of Pressure
• Moves forward at higher angle of attack
• Moves towards normal position at lower angles of attack

Centre of Gravity
• The centre of gravity is the balance point of the aircraft.
• It is usually located close to the longitudinal centre of the aircraft and a forth of the way back from the leading edge of the wing.
• The centre of gravity moves back and forth as the aircraft has passengers or cargo loaded or unloaded.

Aviation Studies-Continuation of
Aerodynamics and Forces.
“Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.”
― Leonardo da Vinci
Vlad Zhelezarov

Thrust
• Thrust is a force that moves an aircraft in the direction of the motion. It is created with a propeller, jet engine, or rocket. Air is pulled in and then pushed out in an opposite direction. One example is a household fan.

Drag
• Drag is the force that acts opposite to the direction of motion. It tends to slow an object. Drag is caused by friction and differences in air pressure. An example is putting your hand out of a moving car window and feeling it pull back.

Weight
• Weight is the force caused by gravity

Lift
• Lift is the force that holds an airplane in the air. The wings create most of the lift used by airplanes.

4 Forces

5 factors of a wing/airfoil
• The object/Wing: Shape and Size
• The motion: Velocity and inclination
• The air: Mass, Viscosity & Compression of air

Aviation Studies-Aircraft Control
“Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.”
― Leonardo da Vinci
Vlad Zhelezarov

The Basics
•Aileron
•Rudder
•Elevator
•Trim tab

Ailerons
• The ailerons primarily control roll.
• The secondary effect is yaw.

Rudder
• The Rudder primarily controls yaw.
• The secondary effect is roll.

Elevator
• The Elevator primarily controls pitch

Aviation Studies-The Airfield & Safety
Precautions
“Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.”
― Leonardo da Vinci
Vlad Zhelezarov

Objectives
• Identify movement areas
• Explain the significance of taxiway, runway and /or helipad markings Ground Signals
• Where are these?
• All of them are next to the wind soc

More markings/signals

Propellers
• BEWARE of propellers, always treat them as LIVE and do not touch or move them unless you are qualified to do so

Jets & Ejection Seat
• BEWARE of jet blast, this normally is a much larger danger area than intake suction. The jet blast area will vary with engine speed.
• Don’t touch anything in Yellow and Black Stripes! (EVER!)

Safety
• When working or moving around a manned aircraft be careful of the following:
• - speed brakes
• - bomb bay doors
• - ejection seats
• - operating radar domes
• - any armament on or around the aircraft

DON'T!
• - smoke near aircraft
• - carry loose objects in unzipped or unbuttoned pockets
• - play with propellers
• - put hands in or on control surfaces
• - step on 'NO STEP' areas

Aviation Studies-Aircraft General
Knowledge
“Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there
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