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  2. Ceiling (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Ceiling_(aeronautics)

    Hence, the aircraft will not have any excess capacity to climb further. Stated technically, it is the altitude where the maximum sustained (with no decreasing airspeed) rate of climb is zero. Compared to service ceiling, the absolute ceiling of commercial aircraft is much higher than for standard operational purposes.

  3. Rate of climb - Wikipedia

    en.wikipedia.org/wiki/Rate_of_climb

    This occurs at the speed where the difference between engine power and the power required to overcome the aircraft's drag is greatest (maximum excess power). [3] V x increases with altitude and V Y decreases with altitude until they converge at the airplane's absolute ceiling, the altitude above which the airplane cannot climb in steady flight.

  4. Angle of climb - Wikipedia

    en.wikipedia.org/wiki/Angle_of_Climb

    V X increases with altitude, and V Y decreases with altitude until they converge at the airplane's absolute ceiling. Best angle of climb (BAOC) airspeed for an airplane is the speed at which the maximum excess thrust is available. Excess thrust is the difference between the total drag of the aircraft, and the thrust output of the powerplant ...

  5. Flight envelope - Wikipedia

    en.wikipedia.org/wiki/Flight_envelope

    In aerodynamics, the flight envelope, service envelope, or performance envelope of an aircraft or spacecraft refers to the capabilities of a design in terms of airspeed and load factor or atmospheric density, often simplified to altitude. [1] [2] The term is somewhat loosely applied, and can also refer to other measurements such as maneuverability.

  6. Lockheed Constellation - Wikipedia

    en.wikipedia.org/wiki/Lockheed_Constellation

    The Lockheed Constellation ("Connie") is a propeller-driven, four-engined airliner built by Lockheed Corporation starting in 1943. The Constellation series was the first civil airliner family to enter widespread use equipped with a pressurized cabin, enabling it to fly well above most bad weather, thus significantly improving the general safety and ease of commercial passenger air travel.

  7. Piper PA-44 Seminole - Wikipedia

    en.wikipedia.org/wiki/Piper_PA-44_Seminole

    The Piper PA-44 Seminole is an American twin-engined light aircraft manufactured by Piper Aircraft. [2] The PA-44 is a development of the Piper Cherokee single-engined aircraft and is primarily used for multi-engined flight training. [2] [3] The Seminole has been built in three production runs; from 1979 to 1982, 1989 to 1990, and continuously ...

  8. Coffin corner (aerodynamics) - Wikipedia

    en.wikipedia.org/wiki/Coffin_corner_(aerodynamics)

    Coffin corner (also known as the aerodynamic ceiling [1] or Q corner) is the region of flight where a fast but subsonic fixed-wing aircraft's stall speed is near the critical Mach number, at a given gross weight and G-force loading. In this region of flight, it is very difficult to keep an airplane in stable flight.

  9. Zoom climb - Wikipedia

    en.wikipedia.org/wiki/Zoom_climb

    In a 1984 demonstration of their performance, an English Electric Lightning fighter aircraft used a zoom climb to intercept a Lockheed U-2 cruising at 66,000 ft, above the Lightning's service ceiling of 60,000 feet. Shortly before this, it had even reached 88,000 ft. [9]