반응형 전체 글116 AFH Chapter 4-11 Angle of Attack Indicators Angle of Attack Indicators Learning to recognize stalls without relying on stall warning devices is important. However, airplanes can be equipped with AOA indicators that can provide a visual indication of the airplane’s proximity to the critical AOA. There are several different kinds of AOA indicators with varying methods for calculating AOA, therefore proper installation and training on the us.. 2021. 7. 30. AFH Chapter 4-10 Stall Recognition Stall Recognition A pilot must recognize the flight conditions that are conducive to stalls and know how to apply the necessary corrective action. This level of proficiency requires learning to recognize an impending stall by sight, sound, and feel. Stalls are usually accompanied by a continuous stall warning for airplanes equipped with stall warning devices. These devices may include an aural a.. 2021. 7. 29. AFH Chapter 4-9 Stalls Stalls A stall is an aerodynamic condition which occurs when smooth airflow over the airplane’s wings is disrupted, resulting in loss of lift. Specifically, a stall occurs when the AOA—the angle between the chord line of the wing and the relative wind—exceeds the wing’s critical AOA. It is possible to exceed the critical AOA at any airspeed, at any attitude, and at any power setting. For these r.. 2021. 7. 28. AFH Chapter 4-8 Maneuvering in Slow Flight Maneuvering in Slow Flight When the desired pitch attitude and airspeed have been established in straight-and-level slow flight, the pilot must maintain awareness of outside references and continually cross-check the airplane’s instruments to maintain control. The pilot should note the feel of the flight controls, especially the airspeed changes caused by small pitch adjustments, and the altitud.. 2021. 7. 27. AFH Chapter 4-7 Performing the Slow Flight Maneuver Performing the Slow Flight Maneuver Slow flight should be practiced in straight-and-level flight, straight-ahead climbs and climbing medium-banked (approximately 20 degrees) turns, and straight-ahead poweroff gliding descents and descending turns to represent the takeoff and landing phases of flight. Slow flight training should include slowing the airplane smoothly and promptly from cruising to .. 2021. 7. 26. AFH Chapter 4-6 Slow Flight Slow Flight When practicing slow flight, a pilot learns to divide attention between aircraft control and other demands. How the airplane feels at the slower airspeeds aids the pilot in learning that as airspeed decreases, control effectiveness decreases. For instance, reducing airspeed from 30 knots to 20 knots above the stalling speed will result in a certain loss of effectiveness of flight con.. 2021. 7. 25. AFH Chapter 4-5 Slow Flight Slow Flight Slow flight is when the airplane AOA is just under the AOA which will cause an aerodynamic buffet or a warning from a stall warning device if equipped with one. A small increase in AOA may result in an impending stall, which increases the risk of an actual stall. In most normal flight operations the airplane would not be flown close to the stall-warning AOA or critical AOA, but becau.. 2021. 7. 24. AFH Chpater 4-4 Angle of Attack Angle of Attack The angle of attack (AOA) is the angle at which the chord of the wing meets the relative wind. The chord is a straight line from the leading edge to the trailing edge. At low angles of attack, the airflow over the top of the wing flows smoothly and produces lift with a relatively small amount of drag. As the AOA increases, lift as well as drag increases; however, above a wing’s c.. 2021. 7. 23. AFH Chapter 4-3 Coordinated Flight Coordinated flight Coordinated flight occurs whenever the pilot is proactively correcting for yaw effects associated with power (engine/ propeller effects), aileron inputs, how an airplane reacts when turning, and airplane rigging. The airplane is in coordinated flight when the airplane’s nose is yawed directly into the relative wind and the ball is centered in the slip/skid indicator. A pilot s.. 2021. 7. 22. 이전 1 ··· 9 10 11 12 13 다음 반응형
