Method for producing a thrust in manoeuvering engines for a watercraft and a manoeuvering engine constructed for the same
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United States of America Patent
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Feb 23, 1982
Grant Date -
N/A
app pub date -
Jul 14, 1978
filing date -
Jul 16, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method for producing a thrust in manoeuvering engines for watercraft and a manoeuvering engine constructed for the same, whereby the method comprises the annular driving water jet supplied to the diffuser and enveloping a first suction water jet is fed to a second suction water jet supplied to the diffuser inner wall surface, while the manoeuvering engine is constructed in such a way that the rear part of the engine casing is provided with an inlet port having a smaller diameter than the outlet port and located in the vicinity of the outlet port of the front engine part, whereby for the optimum adaptation of the exit mixing jet velocity to the vehicle speed a water jet exit cross-section regulating device is provided.
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