Flying devices
OwnerRobert F. Dulakeinventor
Life of this patent
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OwnerRobert F. Dulakeinventor
Estimating the term…
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.
A line controllable flying device comprising first air deflection means to effect on the flying device an aerodynamically induced lift force directed upwardly when said device is flying horizontally, second air deflection means mounted for pivotal movement in a manner to modify the airstream over said first air deflection means thereby to vary the magnitude and/or direction or said lift force, a pair of control lines operatively connected to said second air deflection means for effecting said pivotal movement thereof, a pair of like-dimensioned co-axial pulley wheels for enabling said control lines to pass respectively therearound and from said pulley wheels in an unrestricted manner such as to extend from one side of the flying device in unkinked condition and at an angle to the direction of flight of the flying device, said angle being continuously variable independently of effecting pivoted movement of said second air deflection means, third air deflection means to effect an aerodynamically induced lateral force on the flying device in a direction extending away from the other side of the flying device and of a magnitude sufficient to augment substantially any tension force component in the control lines due to centrifugal force, and fourth air deflection means to effect an aerodynamically induced turning force or moment upon said flying device in a direction tending to turn the flying device outwardly of the arcuate path of motion in which it is constrained to fly.
A line controllable flying device comprising first air deflection means to effect on the flying device on aerodynamically induced lift force directed upwardly when the device is flying horizontally, second air deflection means mounted for pivotal movement in a manner to modify the airstream over said first air deflection means thereby to vary the magnitude and/or direction of said lift force, and a pair of control lines operatively connected to said second air deflection means for effecting said pivotal movement thereof and for extension away from one side of the flying device, characterized in that each of the two opposite surfaces of said second air deflection means has a member projecting away therefrom, free ends of said two members being operatively connected to the two control lines respectively, and in that said pair of control lines pass respectively around a pair of like-dimensioned pulley wheels mounted coaxially on the device and from said coaxial pulley wheels in an unrestricted manner such as to extend away from said one side of the flying device in unkinked condition and at an angle to the direction of flight of the flying device, said angle being continuously variable independently of effecting pivotal movement of said second air deflection means.
A line controllable flying device comprising:
A line controllable flying device comprising first air deflection means to effect on the flying device an aerodynamically induced lift force directed upwardly when said device is flying horizontally, second air deflection means mounted for pivotal movement in a manner to modify the airstream over said first air deflection means thereby to vary the magnitude and/or direction of said lift force, a pair of control lines operatively connected to said second air deflection means for effecting said pivotal movement thereof, a pair of like-dimensioned co-axial pulley wheels for enabling said control lines to pass respectively therearound and from said pulley wheels in an unrestricted manner such as to extend from one side of the flying device in unkinked condition and at an angle to the direction of flight of the flying device, said angle being continuously variable independently of effecting pivoted movement of said second air deflection means, third air deflection means to effect an aerodynamically induced lateral force on the flying device in a direction extending away from the other side of the flying device and of a magnitude sufficient to render any tensioning effect due to centrifugal force unnecessary to sustain flight of the flying device.
Dependencies are inferred from the claim text.