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  • Chapter 10: Advanced Flight Maneuvers › Reconnaissance Procedures › High Reconnaissance

    landing area, approach and departure axes, and obstacles for both the approach and departure. The pilot should also give particular consideration to forced landing areas in case of an emergency. Altitude, airspeed, and flight pattern for a high reconnaissance ... governed by wind and terrain features. It is important to strike a balance between a reconnaissance conducted too high and one too low. It should not be flown so low that a pilot must divide attention between studying the area…

  • Chapter 10: Advanced Flight Maneuvers › Confined Area Operations

    turning or pivoting motion. 5. Turning the tail of the helicopter into the slope during takeoff. Confined Area Operations A confined area is an area where the flight of the helicopter is limited in some direction by terrain ... woods, a city street, a road, a building roof, etc., can each be regarded as a confined area. The helicopter pilot has added responsibilities when conducting operations from a confined area that airplanes pilots do not. He or she assumes…

  • Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Landing—Stuck Left Pedal

    power setting during the approach and ensures that the nose remains to the right. Upon reaching the intended touchdown area and at the appropriate landing gear height, increase the collective smoothly to align the nose with the landing direction ... cushion the landing. A small amount of forward cyclic is helpful to stop the nose from continuing to the right and directs the aircraft forward and down to the surface. In certain wind conditions, the nose of the helicopter…

  • 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…

  • Glossary › Pilot’s Operating Handbook/Airplane Flight Manual

    vertical speed indicator. VS0. The stalling speed or the minimum steady flight speed in the landing configuration. In small airplanes, this is the power-off stall speed at the maximum landing weight in the landing configuration (gear and flaps down ... lower limit of the white arc. VS1. The stalling speed or the minimum steady flight speed obtained in a specified configuration. For most airplanes, this is the power-off stall speed at the maximum takeoff weight in the clean configuration…

  • Chapter 11: Aircraft Performance › Takeoff and Landing Performance › Landing Performance

    effect of wind on deceleration during the landing is identical to the effect on acceleration during the takeoff. The effect of pressure altitude and ambient temperature is to define density altitude and its effect on landing performance. An increase ... density altitude increases the landing speed but does not alter the net retarding force. Thus, the aircraft at altitude lands at the same IAS as at sea level but, because of the reduced density, the TAS is greater. Since…