Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1996-07-24
1998-07-21
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Linear
318135, H02K 4100
Patent
active
057838780
ABSTRACT:
An Electromagnetic Levitation Catapult for preliminary acceleration of a heavy individual payload includes a Magnetodynamic Levitation and Stabilizing Self-Regulating System providing stable flight of the payload along a pre-determined trajectory, a rotor with changeable size of the pole pitch, a stator extended along the trajectory of flight and a synchronizing mechanism. The stator is divided into three distinct sections: a start section where the winding turns have the same length, an acceleration section where the length of the turns increases in the direction from the start section, and a deceleration section. The payload is supported by a chassis carrying the rotor, so that when the rotor engages the stator, a propulsion force is created and propulses the payload along the trajectory. The rotor includes immovable long magnets and short magnets capable of being moved in the vertical direction. The synchronizing mechanism co-ordinates the pole pitch of the rotor with the turn length of the stator winding. Once the payload has approached the acceleration section, the synchronizing mechanism "feels" increment in the turns length and moves the short magnets downward in order to increase the size of the pole pitch and to increase the propulsion force accelerating the payload to the required speed.
REFERENCES:
patent: 4841833 (1989-06-01), Scherbarth et al.
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patent: 4996903 (1991-03-01), Arakaki
patent: 5208496 (1993-05-01), Tozoni et al.
patent: 5225726 (1993-07-01), Tozoni
Dougherty Thomas M.
Jones Judson H.
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