초록 ▼

The Horizontal Axis Rotatory Frustum Toy is a catapulted cylinderlike flying-wing glider that rotates horizontally to produce lift and quite slow flight, suitable indoors or out. A rubber band or string can be used to launch it. Unique shape provides good lateral stability. The design principle may

The Horizontal Axis Rotatory Frustum Toy is a catapulted cylinderlike flying-wing glider that rotates horizontally to produce lift and quite slow flight, suitable indoors or out. A rubber band or string can be used to launch it. Unique shape provides good lateral stability. The design principle may have military dispersion bomb applications.

대표청구항 ▼

In a rotor aircraft having a generally-circular-cross-section elongate frustum portion having lateral and longitudinal axes intersecting at its center, said elongate frustum portion having a continuous circumferential surface extending symmetrically from a plane containing the longitudinal axis and,

In a rotor aircraft having a generally-circular-cross-section elongate frustum portion having lateral and longitudinal axes intersecting at its center, said elongate frustum portion having a continuous circumferential surface extending symmetrically from a plane containing the longitudinal axis and, said plane being perpendicular to said lateral axis, said surface terminating at opposed end portions, an improvement in the aerodynamic structural configuration of said rotor aircraft for enhancing said aircraft\s effective dihedral and lateral stability, said improvement comprising said elongate frustum portion comprising more than one smaller conelike frustum, each said conelike frustum having its smaller periphery closer to the midportion of said elongate frustum portion and rotor aircraft than its larger periphery, each smaller periphery that is adjacent to a larger periphery being smaller than the adjacent larger periphery; the physical characteristics of said aircraft, including its dimensions and weight, being selected to enhance the ease of imparting to it rotatory and translational motions which meet Magnus rotor flight parameters; and a further improvement comprising means at the midportion of said rotor aircraft for temporarily connecting means to launch said aircraft. A method for catapult launching a Magnus-rotor-lifting-effect aircraft, said aircraft including a Magnus rotor, said method comprising temporarily connecting a line to the rotor, wrapping the line around the rotor, holding the aircraft with one hand and the line with the other hand, releasing the aircraft-holding-hand, and pulling suitably hard and long on the line with sufficient skill to impart rotatory and translational motion meeting Magnus rotor flight parameters to the rotor while the line unwinds and disengages from the rotor.