Teaching Demonstration
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PRESENTATION OUTLINE
BASIC AERODYNAMICS
Teaching Demonstration by Engr. Mary Joy Evangelista
Photo by Jim Nix / Nomadic Pursuits
Outline
- Introduction to Aerodynamics
- The Four Forces of Flight
- Airfoil Terminology
- Airplane Phases of Flight
Photo by Bernal Saborio G. (berkuspic)
AERODYNAMICS
- how the motion of the air interacts with a moving object
Photo by Bernal Saborio G. (berkuspic)
INTERNAL AERODYNAMICS
flow of air through passages in solid objects
Photo by Emiel Molenaar
FOUR FORCES OF FLIGHT
LIFT- upward push force, required to hold an aircraft in the air
WEIGHT- natural downward force, generated by gravity "g force" that pulls object to the earth surface
DRAG- air resistance, resists or pulls back on the movement of an aircraft through air by acting opposite to the direction of movement
THRUST- forward push force to move an aicraft forward and overcome the drag or pull force
WEIGHT- natural downward force, generated by gravity "g force" that pulls object to the earth surface
DRAG- air resistance, resists or pulls back on the movement of an aircraft through air by acting opposite to the direction of movement
THRUST- forward push force to move an aicraft forward and overcome the drag or pull force
AIRFOIL
- cross-sectional shape of an object, that when moved through a fluid (air), creates aerodynamic force
Photo by Harry Knight
AIRFOIL TERMINOLOGY
LEADING EDGE - forward edge
TRAILING EDGE - aft edge
CHORD - denotes the length of the airfoil
MEAN CAMBER LINE - denotes the amount of curvature of the wings
POINT OF MAXIMUM THICKNESS - thickest part of the wing (% of chord
HOW IT WORKS?
Photo by Sebastián León Prado
-faster air above gains dynamic pressure
- loss of static pressure creates pressure difference bet. upper and lower surface called LIFT
-AOA increases lift
Airplane Phases of Flight
Photo by Jordan Sanchez
Take-off & Climb- Lift>Weight & Thrust>Drag
Cruise (level flight)- Lift=Weight & Thrust>Drag
Descent- Weight>Lift, but Thrust>Drag
Untitled Slide
Photo by ccPixs.com
