Principles of Flight - QT
Updated: Apr 20, 2021
Lesson Quicktakes cover the items that should be memorized from each of the wifiCFI Lessons. They do not cover all of the lesson details in-depth.
FOUR FORCES OF FLIGHT:
Lift
Weight
Thrust
Drag
LEFT TURNING TENDENCIES:
P-Factor
Torque
Gyroscopic Precession
Spiraling Slipstream
PRODUCING LIFT:
Bernoulli’s Principle = An increase in the speed of a fluid (air) is accompanied by a decrease in pressure.
Downwash Principle = Air deflected off the trailing edge of the wing.
TYPES OF DRAG:
Parasite Drag = No way functions in the aid of flight.
Form Drag = Shape of the aircraft.
Interference Drag = Intersections of aircraft components.
Skin Friction Drag = Skin is not perfectly smooth.
Induced Drag = It is a by-product of lift.
WINGTIP VORTICES:

WAKE TURBULENCE:
Avoidance on Takeoff = Rotate prior to the preceding aircraft. Stay above preceding aircraft’s flight path or side-step.
Avoidance on Landing = Stay above preceding aircraft’s flight path. Land further down the runway.
LIFT/DRAG RATIO:

GROUND EFFECT:

AIRPLANE AXES:

AIRCRAFT STABILITY:
Static Stability:

Dynamic Stability:

FORCES IN TURNS:

SLIPPING AND SKIDDING TURNS:
Remember to "step on the ball."

ADVERSE YAW:
Remember to "step on the ball."

LOAD FACTOR:

THE VG DIAGRAM:

VA (MANEUVERING SPEED)
Below Va Speed = The aircraft will stall.
Above Va Speed = The aircraft may suffer structural damage.
Heavier Aircraft = Awarded a Higher Maneuvering Speed.
Lighter Aircraft = Suffer a Lower Maneuvering Speed.