Aerodynamic Forces
The force that resists an airplane's forward motion through the air
what is Drag?
A shape like a wing or propeller blade designed to produce lift or thrust when airflow flows over it due to its curved shape
What is air foil?
A quantity with both magnitude and direction
What is vector?
the point on an airplane where its weight is balanced in all directions, critical for stable flight.
What is Center of Gravity (CG)?
The side-to-side movement of an airplane's nose around its vertical axis
What is Yaw?
The force acting perpendicular to the relative wind
what is Lift?
A control surface on the vertical stabilizer that controls yaw
what is rudder?
Camber
What is the curvature of an airfoil?
The distance from the datum to the point where a weight is applied
What is Arm (Moment Arm)?
A condition where the wing loses lift due to high angle of attack, disrupting airflow, occurring at a specific angle regardless of airspeed.
What is a stall?
the resistance an aircraft experiences from the air itself, caused by its shape & surfaces
what is Parasite drag?
Control service on the wings trailing edges that move up or down to control the airplane' roll
what is Aileron?
Down wash
What is the downward defection of air behind an airfoil as it moves through the air?
Datum
What is a reference point from which all weight and balance measurements (arms) are taken?
Torque
What is a twisting force from the propeller or engine rotation that can cause the airplane to roll or yaw
Drag caused by lift production, especially at low air speeds or high angles of attack, often due to Wingtip vortices
what is Induced drag?
Movable surface on the wings, trailing edges that increase lift and drag by changing the wings camber
What is flaps?
A principle stating that as the speed of a fluid increases, its pressure decreases.
What is Bernoulli's Principle
a measure used in W&B, calculated by multiplying an objects weight by its distance (arm) from the datum
What is Moment?
Swirling air patterns at the wingtips due to pressure differences
What is Wingtip vortices?
A type of parasite drag caused by the interaction of air flows between adjacent parts
what is Interference drag?
A propeller with adjustable blade angles to optimize performance for different flight conditions like takeoff or cruising.
What is variable pitch propeller?
The angle between the wing's chord line and the oncoming relative wind.
What is Angle of Attack?
CG located outside of allowable range
What is Instability (unstable flight characteristics)?
A phenomenon where an aircraft experiences reduced induced drag when flying close to the ground
What is Ground effect?