General flying cards Flashcards
(64 cards)
Four elements that cause left turning tendency
- Torque reaction from engine and propellar
- Corkscrewing effect of the slipstream
- Gyroscopic action of the propellar
- Asymmetric loading of the propellar (P factor)
Explain Torque reaction (left turning tendency)
The propellar spins clockwise (when facing from pilot’s seat) and causes the plane to roll the opposite direction - newtons third law
Explain Corkscrew effect (left turning tendency)
The propellar gives a corkscrew/spiraling rotation to the slipstream
The slip stream exerts a sideways force on the vertical tail surface and causes it to yaw
Explain gyroscopic action (left turning tendency)
Any time a force is applied to deflect the propellar out of its plane of rotation, the resulting force is 90 degrees ahead of and in the direction of application - causes a pitching and yawing moment depending on the point at which the force was applied.
Explain asymmetric loading (p factor)
When in a high AOA the downward moving blade has a bigger “bite” than the upward moving blade - moves center of thrust to the right and causes a yawing moment to the left
Three types of parasite drag
form, interference and skin friction
Induced drag
caused by the same factors that produce lift; amount varies inversely with airspeed
As airspeed decreases, the angle of attack must increase in turn ____ induced drag
increasing
Intensity of strength of wingtip vortices is directly proportional to
weight of an aircraft
Aircraft will create wingtip vortices with max strength during
High AOA times
takeoff, climb, landing
Boundary layer separation
Point in streamline where airflow no longer adheres to the airfoil
Wake turbulence
Wingtip vortices that are created when an airplane generates lift. Air spills over the wingtips from the high pressure areas below the wings to the low pressure areas above them and causes wingtip vortices = wake turbulence
Tail down force is a result of
Propellar slip stream, wing downwash, stabilator AOA
Gas weight
6lb/gal
Forces of flight
thrust, weight, lift, drag
Thrust
forward force produced by propellar
opposes or overcomes the force of drag
What is drag in aviation
A rearward, retarding force caused by the disruption of airflow by the wing, rotor, fuselage, and other protruding objects.
Angle of attack (AOA)
the angle between the wing chord and the direction of the relative wind
Intensity of strength of wingtip vortices is inversely proportional to
wingspan and speed of the aircraft
Standard temperature at sea level
15 degrees celsius
Best gliding angle PIPER warrior II
73 KIAS
Risk mitigation pnemonic
IMSAFE
Illness
Medication
Stress
Alcohol
Fatigue
Emotion
5p process
The plan
The plane
The pilot
The passengers
The programming
3p process
Perceive
Process
Perform