国外航校私照飞行员地面课L1

1、Day 1Duration: 2 hours Aircraft structure Aerodynamics introductionFour forcesTurning TendenciesAny surface designed to obtain a desired reaction force when in motion relative to the surrounding air. Examples: Wing PropellerLeading EdgeTrailing EdgeChord lineCamberIs the upward acting force Two theo

2、ries associated with Lift: Bernoullis Principle Newtons 3rd Law of Motion Angle between chord line and relative wind.AOA - angle between chord line and relative wind.Pitch is where the nose of the airplane is in relation to the horizon.Could you have a low pitch but a high angle of attack?As velocit

3、y increases, pressure decreasesFor every action there is an equal and opposite reaction Increase angle of attack This works up to the critical angle of attackIncrease speedAdd flapsGravity is the pulling force that tends to draw all bodies downward to the center of the earth.Forward acting forceThe

4、propeller is an airfoil, it creates lift in a forward direction.The rearward acting forceTwo types of drag Parasite Drag Induced DragForces that slow an aircrafts movementAs speed increases parasite drag increases Three Types of Parasite Drag Form drag Design of the airplane Skin-friction drag Bugs,

5、 frost, dirt, etc. Interference drag Located where two points on the aircraft meet.Caused by producing lift Basically - wingtip vortices tilting the lift vector rearwardsAs airspeed decreases angle of attack increases increasing wingtip vortices tilting the lift vector rearwards thereby increasing induced drag.Torque ReactionCorkscrew Ef