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Title:
【発明の名称】推力発生装置
Document Type and Number:
Japanese Patent JP3045754
Kind Code:
B2
Abstract:
A thrust generator which has a structure wherein a helical thrust duct (2) is rotatably supported inside a hollow portion of a superconductive magnet (1) of a solenoid coil type, positive and negative electrodes (8 and 9) are so bonded to the inner surface of the thrust duct (2) as to permit the flow of an electromagnetic fluid (10) such as sea water, and electric current is supplied from a current feeder (3) to the electromagnetic fluid (10) inside the thrust duct (2) so as to generate a Lorentz force F with a magnetic field. The electromagnetic fluid (10) flows into the thrust duct (2) through an opening (6a) at the inlet end portion (6), receives continuously the Lorentz force F inside the thrust duct (2), is accelerated by this force F, and is jetted outside from an opening (7a) at the outlet end portion (7). The reaction of the jet force becomes a thrust. The Lorentz force F is also generated in each element of the current feeder (3) by the magnetic field B generated by the superconductive magnet (1) and the electrode current J flowing through each element, and rotates and drives the thrust duct (2). A fluid friction loss between the inner surface of the thrust duct (2) and the electromagnetic fluid (10) is reduced due to the rotation of the thrust duct (2).

Inventors:
Eiichi Tada
Application Number:
JP25338090A
Publication Date:
May 29, 2000
Filing Date:
September 21, 1990
Export Citation:
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Assignee:
Eiichi Tada
International Classes:
B63H11/04; B63H19/00; H02K44/04; H02K44/08; (IPC1-7): H02K44/04; B63H11/04; B63H19/00; H02K44/08
Domestic Patent References:
JP4500150A
Other References:
【文献】米国特許5668420(US,A)
【文献】米国特許3385983(US,A)
Attorney, Agent or Firm:
Naoki Yoshimura (1 person outside)