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CP.VIII.C.R1

Risk management

Factors and situations that could lead to an inadvertent power-on stall, spin, and loss of control.

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From the FAA library

  • Chapter 5: Aerodynamics of Flight › Load Factors › Load Factors and Stalling Speeds

    Load Factors and Stalling Speeds Any aircraft, within the limits of its structure, may be stalled at any airspeed. When a sufficiently high AOA is imposed, the smooth flow of air over an airfoil breaks up and separates, producing ... abrupt change of flight characteristics and a sudden loss of lift, which results in a stall. A study of this effect has revealed that an aircraft’s stalling speed increases in proportion to the square root of the load factor…

  • Chapter 5: Aerodynamics of Flight › Load Factors › Stalls

    Stalls The normal stall entered from straight-and-level flight, or an unaccelerated straight climb, does not produce added load factors beyond the 1 G of straight-and-level flight. As the stall occurs, however, this load factor ... reduced toward zero, the factor at which nothing seems to have weight. The pilot experiences a sensation of “floating free in space.” If recovery is effected by snapping the elevator control forward, negative load factors (or those that impose…

  • Chapter 11: Aircraft Performance › Climb Performance Factors › Region of Reversed Command

    normal command. Flight in the region of reversed command means flight in which a higher airspeed requires a lower power setting and a lower airspeed requires a higher power setting to hold altitude. It does not imply that a decrease ... power produces lower airspeed. The region of reversed command is encountered in the low speed phases of flight. Flight speeds below the speed for maximum endurance (lowest point on the power curve) require higher power settings with a decrease…

  • Chapter 5: Aerodynamics of Flight › Stalls

    stated above, it does not completely stop producing lift. In most straight-wing aircraft, the wing is designed to stall the wing root first. The wing root reaches its critical AOA first making the stall progress outward toward the wingtip ... having the wing root stall first, aileron effectiveness is maintained at the wingtips, maintaining controllability of the aircraft. Various design methods are used to achieve the stalling of the wing root first. In one design, the wing is “twisted…

  • Chapter 9: Aircraft Electrical System › Introduction › Power Factor

    Power Factor As seen in Figure 9-30, the resistive power and the reactive power effect the circuit at right angles to each other. The power factor in an AC circuit is created by this right angle effect. Power factor ... defined as the mathematical difference between true power and apparent power. Power factor (PF) is a ratio and always a measurement between 0 and 100. The power factor is directly related to the phase shift of a circuit. The greater…

  • Chapter 12: Fundamentals of Electricity & Electronics › Apparent Power Defined

    True Power Defined True power of any AC circuit is commonly referred to as the working power of the circuit. True power is the power consumed by the resistance portion of the circuit and is measured in watts. True power ... symbolized by the letter P and is indicated by any wattmeter in the circuit. True power is calculated by the formula: Apparent Power Defined Apparent power in an AC circuit is sometimes referred to as the reactive power…