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I am posting this because I do not understand why there are no jet powered sea planes. It seems that commuter flights from the waterfronts of New York City to Boston would be hugely popular.
Jet powered sea planes would save huge amounts of travel time (to and from inland airports) and airport costs.
Not quite the same but...
http://www.aether.d...kit/ekranoplan.html
Ekranoplans are just so cool. [angel, Jun 24 2005]
[bris] Check some of these out!
http://www.strange-...aft/J-Sea/J-Sea.htm
Those Convair photos look suspiciously real [AbsintheWithoutLeave, Jun 24 2005]
[link]
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I think it may be to do with the availability of long, smooth runways, and the fact that you can't take off/land in heavy seas. |
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Build channels? The trick here is sacraficing a nice place to take/off land from home but think about how ice it will be to cruise around the carribean, like jet cruises. Screw those big boats. Screw 'em. |
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I've seen jet-powered flying boats, but never a jet-powered sea-plane - does anyone know if anyone ever tried to build one? |
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Plenty of turbine powered seaplanes around. Cessna Caravan and countless conversions. No, not pure jets, though. |
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<Pictures an F15 on floats. Yikes.> |
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The Caspian Sea Monster (an Ekranoplan) is a perfect example of what you're talking about. Also a Nakajima model but I'm having a deuce of a time trying to find a link or picture. |
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Aww, [bris], I'm hugely disappointed!
Saunders-Roe SR.A/1
Convair XF2Y-1 SeaDart
Martin P6M-2 Seamaster
Proof of the interface between "learn from other people's mistakes" and "try, try again" |
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I was responding that I've never seen any pure jets on floats and, nope, I haven't. |
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And, [lurch], I have not seen you on the site for a very long time. I hope you are doing well. |
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Thank heavens we are allowed to say "Ekranoplan" again. I was getting sick of calling them "top secret surface effect flying boats". |
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The reason that there are no jet powered sea-planes is that the boat-hull shape required for the lower fuselage is aerodynamically very inefficient, and would drastically increase fuel burn, as well as reduce top speed. Transit times would be longer, not shorter, and maximum range would be reduced. |
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The infrastructure already exists for land-based aircraft, and there are already many large airports within a short distance of the shore. There's simply no economic reason to design and build large seaplanes anymore. |
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//Boat-hull shape required for the
lower
fuselage is aerodynamically very
inefficient// Yes, at the cruising height
and speed of a conventional jet. But
according to the link, the efficiency of
these things once they achieve
skimming flight is very good and one of
their attractions. |
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Yes, but, alas, jet engines at low altitude are anything but efficient. |
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Ah. Well, then, just scale up.
Presumably the bigger the wing, the
greater the height at which the ground-
effect can be sustained. So, combine
this with the manta-ray-plane idea and
make a wing big enough to maintain
ground effect at 37,000ft. Presumably,
a wing with a chord of a few thousand
feet would do the job..... |
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Or (I'm on a bit of a roll here), have the
plane at low altitude and the engines at
37,000 feet, connected by a huge
tether. Sort of like a kite, but exactly
the opposite and very different. |
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Hmm. I like that flying engines idea. Utterly half-baked. |
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