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  2. Helicopter height–velocity diagram - Wikipedia

    en.wikipedia.org/wiki/Helicopter_height...

    The FAA states "The height–velocity diagram or H/V curve is a graph charting the safe/unsafe flight profiles relevant to a specific helicopter. As operation outside the safe area of the chart can be fatal in the event of a power or transmission failure it is sometimes referred to as the dead man's curve ."

  3. Aérospatiale SA 315B Lama - Wikipedia

    en.wikipedia.org/wiki/Aérospatiale_SA_315B_Lama

    SA 315B Lama, 2003. The Lama was developed specifically to provide a rotorcraft with exceptional high-altitude performance. In practice, the type found considerable use within regions that possessed extensive mountain ranges, such as South America and India, being capable of lifting loads and deploying personnel in areas that had been previously impossible to have otherwise achieved.

  4. Axes conventions - Wikipedia

    en.wikipedia.org/wiki/Axes_conventions

    Finally, in case of space vehicles like the Space Shuttle etc., a modification of the latter convention is used, where the vehicle's (body's) positive y- or pitch axis again always points to its right, and its positive z- or yaw axis always points down, but “down” now may have two different meanings: If a so-called local frame is used as ...

  5. List of aviation, avionics, aerospace and aeronautical ...

    en.wikipedia.org/wiki/List_of_aviation,_avionics...

    Aerodrome reference point ARTCC Air route traffic control centers ASAS Airborne Separation Assurance System ASD Aircraft situation display ASDA Accelerate Stop Distance Available: ASDE-X Airport Surface Detection Equipment, Model X: ASDL Aeronautical satellite data link ASI Airspeed indicator: ASL Above sea level [1] ASLO

  6. 4D-RCS Reference Model Architecture - Wikipedia

    en.wikipedia.org/wiki/4D-RCS_Reference_Model...

    4D/RCS is a reference model architecture that provides a theoretical foundation for designing, engineering, integrating intelligent systems software for unmanned ground vehicles. [3] Fundamental structure of a 4D/RCS control loop. According to Balakirsky (2003) 4D/RCS is an example of deliberative agent architecture. These architectures ...

  7. Center of gravity of an aircraft - Wikipedia

    en.wikipedia.org/wiki/Center_of_gravity_of_an...

    For helicopters, it may be located at the rotor mast, the nose of the helicopter, or even at a point in space ahead of the helicopter. While the horizontal reference datum can be anywhere the manufacturer chooses, most small training helicopters have the horizontal reference datum 100 inches forward of the main rotor shaft centerline.

  8. Ground resonance - Wikipedia

    en.wikipedia.org/wiki/Ground_resonance

    Proper maintenance of the helicopter's damping system components can prevent ground resonance from taking hold. When it does occur, recovery is often possible if action is taken quickly. If sufficient rotor RPM exists, immediate takeoff can restore rotor balance by allowing the airframe to move and help dampen the oscillation freely. [ 1 ]

  9. En-route chart - Wikipedia

    en.wikipedia.org/wiki/En-route_chart

    En-route charts are divided into high and low versions, with information on airways and navaids for high- and low-altitude flight, respectively. The division between low altitude and high altitude is usually defined as the altitude that marks transition to flight levels (in the United States , this is taken to be 18,000 feet MSL by convention).