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  2. Multirotor - Wikipedia

    en.wikipedia.org/wiki/Multirotor

    A multirotor [1] or multicopter is a rotorcraft with more than two lift-generating rotors. An advantage of multirotor aircraft is the simpler rotor mechanics required for flight control. An advantage of multirotor aircraft is the simpler rotor mechanics required for flight control.

  3. Rotor (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Rotor_(mathematics)

    In mathematics, a rotor in the geometric algebra of a vector space V is the same thing as an element of the spin group Spin(V). We define this group below. We define this group below. Let V be a vector space equipped with a positive definite quadratic form q , and let Cl( V ) be the geometric algebra associated to V .

  4. Tiltrotor - Wikipedia

    en.wikipedia.org/wiki/Tiltrotor

    The Bell Boeing V-22 Osprey. A tiltrotor is an aircraft that generates lift and propulsion by way of one or more powered rotors (sometimes called proprotors) mounted on rotating shafts or nacelles usually at the ends of a fixed wing.

  5. Curl (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Curl_(mathematics)

    Example 1 [ edit ] Suppose the vector field describes the velocity field of a fluid flow (such as a large tank of liquid or gas ) and a small ball is located within the fluid or gas (the center of the ball being fixed at a certain point).

  6. Volocopter 2X - Wikipedia

    en.wikipedia.org/wiki/Volocopter_2X

    The Volocopter 2X is a German two-seat, optionally-piloted, multirotor eVTOL aircraft. The personal air vehicle was designed and produced by Volocopter GmbH of Bruchsal, and first introduced at the AERO Friedrichshafen airshow in 2017. The aircraft is sold complete and ready-to-fly. Volocopter was formerly known as E-volo. [1] [2]

  7. American Invitational Mathematics Examination - Wikipedia

    en.wikipedia.org/wiki/American_Invitational...

    The American Invitational Mathematics Examination (AIME) is a selective and prestigious 15-question 3-hour test given since 1983 to those who rank in the top 5% on the AMC 12 high school mathematics examination (formerly known as the AHSME), and starting in 2010, those who rank in the top 2.5% on the AMC 10. Two different versions of the test ...

  8. List of mathematical functions - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_functions

    In mathematics, some functions or groups of functions are important enough to deserve their own names. This is a listing of articles which explain some of these functions in more detail. This is a listing of articles which explain some of these functions in more detail.

  9. Quadcopter - Wikipedia

    en.wikipedia.org/wiki/Quadcopter

    The aircraft exhibited a considerable degree of stability and increase in control-accuracy for its time, and made over a thousand test flights during the middle 1920s. By 1923 it was able to remain airborne for several minutes at a time, and on April 14, 1924, it established the first-ever FAI distance record for helicopters of 360 m (390 yd).