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#1 | |
Member
Join Date: Apr 2004
Location: Portsmouth, NH
Posts: 49
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![]() Quote:
Don't believe me? Think of it this way - How many g's are you pulling in ground effect? I would hope about one. g = L/W and we can assume weight will not change a noticable amount while going into and out of ground effect. Since you are not pulling more g's, the only variable left is lift, which cannot change by itself. |
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#2 | |
Senior Member
Join Date: Sep 2003
Posts: 1,943
Thanks: 23
Thanked 111 Times in 51 Posts
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ps - Great link RG ! I've not thought about hovercraft in probably 20 years. I was amazed to see what relatively sophisticated craft even a semi-handyman could build for pretty small $$. Aaah if only I had the time. I'd build one with a daggerboard (and retractable rudder ?) so it would corner more like a boat. It'd be fun to pull up to Wolfeboro some Sat noon in July, past the waiting boats and up the launch ramp to "dock" in the auto parking lot. ![]() pps - Now I'm wondering if you couldn't give up the amphibious nature of a hovercraft and use an outboard (or some kind of outdrive) to propel the hover, err boat, err hoverboat. I don't know about the relative efficiencies of air vs water props, might not be too different if I understand the lesson of MITs "Decavitator" correctly. Any person standing nearby would sure appreciate the screw design rather than the prop wash. Perhaps another hybrid design is the ticket ... ![]()
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Mee'n'Mac "Never attribute to malice that which can be explained by simple stupidity or ignorance. The latter are a lot more common than the former." - RAH Last edited by Mee-n-Mac; 05-26-2004 at 11:22 AM. Reason: added "changing nothing else ..." |
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