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#1
08-19-2004, 03:25 AM
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| Jet drive question. Question... would a jet drive work if the exhaust was out of the water? My guess is yes. I am assuming that the intake is being fed with an adequate supply and that there is good flow through. Since the "equal and opposite reaction" idea does not depend on the medium which surrounds the exhaust area, the expelling water should still provide thrust, but how much? Would it diminish? Has anyone seen any examples? Thanks, Pete  |
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#2
08-19-2004, 01:15 PM
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| Yes, they will work. Google up "boeing jetfoil" or "Navy PHM" or "Navy PBR" for examples of exposed discharge systems. Hard to find a good stern quarter picture of the foilers though as the spray hides the jets. When the PBR is on plane the jets are fully out of the water. |
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#3
08-21-2004, 04:50 PM
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| If you are interested in jet boat history try www.hamjet.co.nz the inventor of the principle you mention.Also www.shotoverjet.com is interesting.
__________________ tomkane |
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