摘要 |
The propulsion unit has two superimposed assemblies (A,B) which have motor (4) driven rotating heads (10). The rotating heads use the inner edge (7) of a rail (5) to drive pairs of assembly masses (M1A,M2A,M1B,M2B) in opposing senses around a heart shaped trajectory to produce a net force. A number of assemblies may be combined such that by varying the relative power in each assembly the direction of the overall resultant force is controlled
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