Lift Flashcards
The equation of continuity states that?
Mass can neither be created nor destroyed
The result of the equation of continuity is?
Air mass flow is a constant
Bernoulli’s theorem states that?
in the streamline flow of an ideal fluid, the sum of the potential energy plus the pressure energy plus the kinetic energy will remain constant.
Considering Bernoulli’s theorem, if kinetic energy increases what will be the effect of pressure energy?
Since the sum of energy needs to remain constant, if kinetic energy increase pressure energy decreases.
The rearranged kinetic energy formula =
1/2 p v^2
The fineness ratio is?
The ratio of depth to length of a streamlined body
Define the lift formula, and the individual meanings.
CL 1/2 P V^2 S
CL is the coefficient of lift, which is the value of lift for a given angle of attack
1/2 RHO is the air density
V^2 is the velocity(TAS) in feet or metres per second squared. In other words, if the speed is doubled, the lift increases fourfold
S is the surface area
The centre of pressure moves forward with an increase in angle of attack due to?
The effective thickness of the aerofoil increasing
A faster wing will have what type of thickness/chord ratio?
A low ratio
Over the top surface of an aerofoil the flow begins to slow down at -
And is called?
or slightly behind the point of maximum camber.
The transition point
The point where the airflow changes from laminar to turbulent is called?
The transition point
The definition of wing span is?
The length from wing tip to wing tip
