| 摘要 |
The invention relates to a total propulsion system. It consists of a propeller of which the blades and the rear part of its body are hollow. The external parts work as a normal propeller, and simultaneously, the liquid flow gets caught in the hollow parts by the intake opening 9 between the leading edges 12 and 13 and is ejected by the central exhaust opening 11 aided by the ejection cone placed in the body. The other part of the flow which is accelerated by centrifugal force escapes through the nozzles 4. Contention studs 8 prevent the lateral dispersion of the water. The addition of the internal effects to the propeller gives rise to an additional thrust which, added to those already obtained by the external parts, partially eliminates the noise and internal drag. The principle of the propeller with hollow blades according to the invention is mainly intended for marine propulsion and may be used in aeronautics. <IMAGE>
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