Principles Of Flight Flashcards
An _______ in the speed of a fluid occurs
simultaneously with a decrease in pressure or a decrease in the fluid’s potential energy.
increase
Used to calculate the lift force on an airfoil, if the behavior of the fluid flow in the vicinity of the foil is known
Bernoulli’s Principle
the force that acts at a right
angle to the direction of motion
through the air.
Lift
the force that acts opposite to
the direction of motion.
Drag
the force of gravity that acts
in a downward direction toward the
center of the Earth.
Weight
the force that propels a flying
machine in the direction of motion
Thrust
all drag that is not associated with the production of lift
Parasite Drag
Mwhich is the result
of the
aerodynamic
resistance to
motion due to the
shape of the
aircraft.
Form Drag
which is
due to the
smoothness or
roughness of the
surfaces of the
aircraft.
Skin Friction
Drag,
, which may
occur where
surfaces with
different
characteristics
meet (e.g. wing
and fuselage)
Interference
Drag
Which is a secondary
effect of the
production of lift.
Induced Drag
Which comes into
play when shock
waves are
developed close to
the surface of the
aircraft in transonic
and supersonic
flight
Wave Drag
In a level turn, lift is split into two primary vector components: the ______ component and ______ component, which are inversely
proportional
Horizontal and vertical
_____ caused by aileron drag,
in the opposite direction to the
direction of the intended turn.
Yaw
The _______ produces
less lift than the lifted wing
due to the change in each
wing’s angle of attack. The
increased lifting force on the
rising wing also causes more
induced drag
lowered wing
the amount of time it takes to
complete a turn.
Rate of Turn
the horizontal distance that an
aircraft uses to turn
Radius of Turn:
Standard Rate of Turn:
3°/second
Half-standard Rate of Turn:
1.5°/second
Aileron
Roll
Elevator/
Stabilator
Pitch
Rudder
Yaw
Any surface, such as a wing, that provides
aerodynamic force when it interacts with a
moving stream of air to generate lift
Airfoil
