AI.IX.C.K2c

From the FAA library

• Pilot's Handbook of Aeronautical Knowledgep. 5-44
  Chapter 5: Aerodynamics of Flight › High Speed Flight › Subsonic Versus Supersonic Flow

  Compressibility (and to a lesser extent viscosity) is of paramount importance at speeds approaching the speed of sound. In these speed ranges, compressibility causes a change in the density of the air around an aircraft. During flight, a wing produces ... lift by accelerating the airflow over the upper surface. This accelerated air can, and does, reach sonic speeds even though the aircraft itself may be flying subsonic. At some extreme AOAs, in some aircraft, the speed of the air over…

• Airplane Flying Handbookp. 5-11
  Chapter 5: Maintaining Aircraft Control: Upset Prevention and Recovery Training › Slow Flight › Performing the Slow Flight Maneuver

  adequate height above the ground for recovery should the airplane inadvertently stall. To begin the slow flight maneuver, the pilot should clear the area and gradually reduce thrust from cruise power and adjust the pitch to allow the airspeed ... decrease while maintaining altitude. As the speed of the airplane decreases, there is a change in the sound of the airflow. As the speed approaches the target slow flight speed, which is an airspeed just above the stall warning…

• Pilot's Handbook of Aeronautical Knowledgep. 5-24
  Chapter 5: Aerodynamics of Flight › Aerodynamic Forces in Flight Maneuvers › Forces in Descents

  Figure 5-36. Changes in lift during climb entry. The thrust required for a stabilized climb equals drag plus a percentage of weight dependent on the angle of climb. For example, a 10° climb would require thrust to equal drag ... plus 17 percent of weight. To climb straight up would require thrust to equal all of weight and drag. Therefore, the angle of climb for climb performance is dependent on the amount of excess thrust available to overcome a portion…

• Pilot's Handbook of Aeronautical Knowledgep. 5-37
  Chapter 5: Aerodynamics of Flight › Load Factors › Chandelles and Lazy Eights

  would be difficult to make a definite statement concerning load factors in these maneuvers as both involve smooth, shallow dives and pull-ups. The load factors incurred depend directly on the speed of the dives and the abruptness ... pull-ups during these maneuvers. Generally, the better the maneuver is performed, the less extreme the load factor induced. A chandelle or lazy eight in which the pull-up produces a load factor greater than 2 Gs will not result…

• Pilot's Handbook of Aeronautical Knowledgep. 5-49
  Chapter 5: Aerodynamics of Flight › Boundary Layer Separation › High Speed Flight Controls

  High Speed Flight Controls On high-speed aircraft, flight controls are divided into primary flight controls and secondary or auxiliary flight controls. The primary flight controls maneuver the aircraft about the pitch, roll, and yaw axes. They include the ailerons ... spoilers, and slats. Spoilers are used on the upper surface of the wing to spoil or reduce lift. High speed aircraft, due to their clean low drag design, use spoilers as speed brakes to slow them down. Spoilers are extended…

• Pilot's Handbook of Aeronautical Knowledgep. 5-42
  Chapter 5: Aerodynamics of Flight › Weight and Balance › Effect of Weight on Flight Performance

  Effect of Weight on Flight Performance The takeoff/climb and landing performance of an aircraft are determined on the basis of its maximum allowable takeoff and landing weights. A heavier gross weight results in a longer takeoff run and shallower climb ... faster touchdown speed and longer landing roll. Even a minor overload may make it impossible for the aircraft to clear an obstacle that normally would not be a problem during takeoff under more favorable conditions. The detrimental effects of overloading…