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by nickelpro
1074 days ago
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Huh, I wouldn't classify any of those propulsion trains as pump-jets (and I never heard them called that aboard said vessels ;-P), but wikipedia seems to agree with you. They're ducted propulsors, a direct evolution of the classic submarine prop that integrates a pressure-increasing shroud and stator vane assembly. A "pump jet" classically involves some sort of centrifugal pump element or at least a vectoring mechanism. You typically wouldn't call a ducted fan (ex, on the X-22 [1]) a jet, but I guess in the water we do. [1]: https://en.wikipedia.org/wiki/Bell_X-22 |
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