The Principles Office
An ______________ is any structure designed to manipulate the flow of a fluid to produce a reaction, which in an aircraft’s case, is aerodynamic lift.
Airfoil
___________ is the ability of an aircraft to correct for conditions that act on it, like turbulence or flight control inputs.
Stability
Name this Left Turning Tendency: As you throttle up your engine for takeoff, the right-turning direction of your engine and propeller forces the left side of your airplane down toward the runway. When the left side of the airplane is forced down onto the runway, the left tire has more friction with the ground than the right tire, making your aircraft want to turn left.
Torque Effect
Name the Four Forces of Flight:
Lift, Weight, Thrust and Drag.
_________ is the ratio of the lift being produced by the wings compared to the weight of the aircraft.
Load Factor.
A measure of the curvature of the airfoil.
Camber.
•For aircraft, there are two general types of stability: ________ and _________.
static and dynamic.
___________ which is also called "asymmetric propeller loading", happens when the downward moving propeller blade takes a bigger "bite" of air than the upward moving blade.
P-Factor
Bernoullis Principle and Newtons Third Law are two principles we use to describe ______.
Lift.
To avoid these, you should takeoff before a prior aircraft’s rotation point, and climb above their flight path.
Wingtip Vortices
An imaginary straight line drawn between the leading edge and the trailing edge.
Chord Line.
An aircraft that has _________ static stability tends to return to its original attitude when it's disturbed.
Positive.
Name this Left Turning Tendency: Raising the tail creates force on top of the propeller. That force is felt 90 degrees in the direction of the rotation.
Gyroscopic Precession.
When lift equals _______, the plane is in equilibrium and doesn’t gain or lose altitude
Weight.
Direct cause of all stalls is an excessive ________.
Angle of Attack
His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A.
Newton.
An aircraft that has ________ static stability tends to continue moving away from its original attitude when it's disturbed.
negative
During takeoff, air accelerated behind the prop (known as the slipstream) follows a corkscrew pattern. As it wraps itself around the fuselage of your plane, it hits the left side of your aircraft's tail, creating a yawing motion, and making the aircraft yaw left.
Spiraling Slipstream.
_______ is the forward force which opposes drag.
Thrust.
In a ______ turn, the rate of turn is too slow for the bank angle.
Slipping.
What is the name of the Principle that states: The presence of air friction, viscosity, allows an airfoil to generate lift. As the air flows around an airfoil, air molecules move faster on the flat, underside of the airfoil creating greater pressure. The curved top part of the airfoil results in air molecules moving slower, thus creating less pressure.
Bernoulli’s Principle
_________ stability is how an airplane responds over time to a disturbance.
Dynamic
Pilots have to input the ______ rudder to counter this left-turning tendency
What are the two types of drag?
Parasite Drag and Induced Drag.
In a _______ turn, the rate of turn is too great for the bank angle.
Skidding.