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  2. Aircraft flight dynamics - Wikipedia

    en.wikipedia.org/wiki/Aircraft_flight_dynamics

    y E axis - positive in the direction of east; z E axis - positive towards the center of the Earth; In many flight dynamics applications, the Earth frame is assumed to be inertial with a flat x E,y E-plane, though the Earth frame can also be considered a spherical coordinate system with origin at the center of the Earth.

  3. Ship motions - Wikipedia

    en.wikipedia.org/wiki/Ship_motions

    A yaw motion is a side-to side movement of the bow and stern of the ship. The transverse/Y axis, lateral axis, or pitch axis is an imaginary line running horizontally across the ship and through the centre of mass. A pitch motion is an up-or-down movement of the bow and stern of the ship.

  4. Aircraft principal axes - Wikipedia

    en.wikipedia.org/wiki/Aircraft_principal_axes

    The position of all three axes, with the right-hand rule for describing the angle of its rotations. An aircraft in flight is free to rotate in three dimensions: yaw, nose left or right about an axis running up and down; pitch, nose up or down about an axis running from wing to wing; and roll, rotation about an axis running from nose to tail.

  5. Flight director (aeronautics) - Wikipedia

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

    The FD is commonly used in direct connection with the autopilot (AP), where the FD commands the AP to put the aircraft in the attitude necessary to follow a trajectory. In some aircraft, the autopilot cannot function without the flight director engaged.

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  7. Glossary of physics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_physics

    By definition, it is the amount of energy gained by the charge of a single electron moved across an electric potential difference of one volt. electronegativity A chemical property that describes the tendency of an atom or a functional group to attract electrons (or electron density) towards itself. electronics

  8. Six degrees of freedom - Wikipedia

    en.wikipedia.org/wiki/Six_degrees_of_freedom

    This is a practical metric, in contrast to the abstract definition of degrees of freedom which measures the aggregate positioning capability of a system. [ 3 ] In 2007, Dean Kamen , inventor of the Segway , unveiled a prototype robotic arm [ 4 ] with 14 degrees of freedom for DARPA .

  9. Motion (geometry) - Wikipedia

    en.wikipedia.org/wiki/Motion_(geometry)

    In 1914 D. M. Y. Sommerville used the idea of a geometric motion to establish the idea of distance in hyperbolic geometry when he wrote Elements of Non-Euclidean Geometry. [12] He explains: By a motion or displacement in the general sense is not meant a change of position of a single point or any bounded figure, but a displacement of the whole ...