| 摘要 |
A line controllable model airplane has a main delta wing to provide an aerodynamically induced lift force directed upwardly when the airplane is flying horizontally. An elevator is mounted on the airplane for pivotable movement in a manner to modify the airstream over the delta-wing thereby to vary a vectorial property of the lift force. A pair of control lines are operatively connected to the elevator for effecting pivotable movement thereof. The control lines extend away from one side of the flying device in an unkinked condition and at an angle to the direction of flight. The angle is continuously variable independently of effecting pivotable movement of the elevator. An air deflector is provided to effect an aerodynamically induced lateral force on the airplane in a direction extending away from the other side thereof and at a magnitude sufficent to render any tensioning effect due to centrifugal force in the control lines unnecessary to sustain flight.
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