Am sure the later Ultragull also features in a video! would love to see how it flew
imagining a catapult with a large umbrella, to park it vertically, nose up, just to avoid a sudden wind to fly it into a fence unattended ;)
Can we have today's gull airfoil and similar chord, for lower stall speeds, bit like the sunny boxwing?
for light aircraft or eGulls, how do we quantify the benefit of weight savings, in an easily gettable sense? eg, commercial airlines have a rule of thumb that says 1% weight savings is nearly equal to .75% improvement in fuel economy
Cheers!
Rahul
Folding Wing Gull?
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rahulchoudhary73
Re: Folding Wing Gull?
to make amends, just a bit like a tailless biplane; sunny was designed by a German entrepreneur, sunny-boxwing.de; just a bookish mannerism, speaking of the Atlantic as a pond ;)
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bruce.markle
Re: Folding Wing Gull?
Another cool boxwing or boxtail or whatever was the flynano; a really big media splash in 2011 and 2012 and then seems to have disappeared:
http://www.flynano.com/
And it was electric to boot!
Bruce
http://www.flynano.com/
And it was electric to boot!
Bruce
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rahulchoudhary73
Re: Folding Wing Gull?
positive stagger is safer, high leading wing. The regular gull is even safer. Flex between the two wings of a box wing must need to be accommodated with some flexibility I guess; along with a host of other features added to the gull over the decades, trimtab to begin with
wonder pilots find the shape unplane like or something or Mark would've built thousands by now, and one already in the museum :)
wonder pilots find the shape unplane like or something or Mark would've built thousands by now, and one already in the museum :)
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rahulchoudhary73
Re: Folding Wing Gull?
Hi Mark,
How does the slot effect work for staggered biplanes? i see knoller-betz , katzmayr, nenadovitch effect on the web sans details.
The pou du ciel & starcky had reasonably large chord wings too, pou was known for being spin proof parachute descent capability in an unforeseen event. Half the Odyssey's wing span staggered and joined with a fibreglass curtain on the sides, extending the droopy wing tips ought work. may just need a smaller BRS, if they come any smaller configurations, installed right above the pilot's head. At least twice the luggage space too. The trailer platform will be the smallest, just a bit larger than the wheelbase, with just the propellor opened and tucked above the front wing. If the rear wheels could go a little further back, they could tuck in right under the rear wing, like an open retractable lite undercarriage.
I can just feel, like a five year waiting line of excited customers for a compact pusher biplane like thus.
2 cents,
Rahul
How does the slot effect work for staggered biplanes? i see knoller-betz , katzmayr, nenadovitch effect on the web sans details.
The pou du ciel & starcky had reasonably large chord wings too, pou was known for being spin proof parachute descent capability in an unforeseen event. Half the Odyssey's wing span staggered and joined with a fibreglass curtain on the sides, extending the droopy wing tips ought work. may just need a smaller BRS, if they come any smaller configurations, installed right above the pilot's head. At least twice the luggage space too. The trailer platform will be the smallest, just a bit larger than the wheelbase, with just the propellor opened and tucked above the front wing. If the rear wheels could go a little further back, they could tuck in right under the rear wing, like an open retractable lite undercarriage.
I can just feel, like a five year waiting line of excited customers for a compact pusher biplane like thus.
2 cents,
Rahul
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rahulchoudhary73
Re: Folding Wing Gull?
Hi Mark,
How does the slot effect work for staggered biplanes? i see knoller-betz , katzmayr, nenadovitch effect on the web sans details.
The pou du ciel & starcky had reasonably large chord wings too, pou was known for being spin proof parachute descent capability in an unforeseen event. Half the Odyssey's wing span staggered and joined with a fibreglass curtain on the sides, extending the droopy wing tips ought work. may just need a smaller BRS, if they come any smaller configurations, installed right above the pilot's head. At least twice the luggage space too. The trailer platform will be the smallest, just a bit larger than the wheelbase, with just the propellor opened and tucked above the front wing. If the rear wheels could go a little further back, they could tuck in right under the rear wing, like an open retractable lite undercarriage.
I can just feel, like a five year waiting line of excited customers for a compact pusher biplane like thus.
2 cents,
Rahul
How does the slot effect work for staggered biplanes? i see knoller-betz , katzmayr, nenadovitch effect on the web sans details.
The pou du ciel & starcky had reasonably large chord wings too, pou was known for being spin proof parachute descent capability in an unforeseen event. Half the Odyssey's wing span staggered and joined with a fibreglass curtain on the sides, extending the droopy wing tips ought work. may just need a smaller BRS, if they come any smaller configurations, installed right above the pilot's head. At least twice the luggage space too. The trailer platform will be the smallest, just a bit larger than the wheelbase, with just the propellor opened and tucked above the front wing. If the rear wheels could go a little further back, they could tuck in right under the rear wing, like an open retractable lite undercarriage.
I can just feel, like a five year waiting line of excited customers for a compact pusher biplane like thus.
2 cents,
Rahul
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rahulchoudhary73
Re: Folding Wing Gull?
Hi Mark,
All i can make out is front upper wing leaves vortex pairs that would end up on the rear lower wing, giving a natural vortex generator effect on the rear wing. hence more lift, which would vary with speed. Also, tr wake of the front wing may present the rear wing with a higher pressure front overall, compared to what the front wing's leading edge sees. on the other side, a couple of extra feet of wing span may be required for a boxwing to equate to an Odyssey's wing. ergo, more weight which is why thee ne'er built it again.
but hey, even Leonardo da Vinci appeared in a dream to a completely layman guy recently with the same design. only he had full span flaps on "both" wings (called them eleflaps). Must take two arm restlers to operate that one. uncrashable plane he called it, much so daVinci wanted to live again and make it (in this guy's dream). guy even patented it, which is free too now. his scale model's rudders and propeller were too small though, wheels too close too.
We'll if DaVinci liked it so much, why not?
2 cents,
rc
All i can make out is front upper wing leaves vortex pairs that would end up on the rear lower wing, giving a natural vortex generator effect on the rear wing. hence more lift, which would vary with speed. Also, tr wake of the front wing may present the rear wing with a higher pressure front overall, compared to what the front wing's leading edge sees. on the other side, a couple of extra feet of wing span may be required for a boxwing to equate to an Odyssey's wing. ergo, more weight which is why thee ne'er built it again.
but hey, even Leonardo da Vinci appeared in a dream to a completely layman guy recently with the same design. only he had full span flaps on "both" wings (called them eleflaps). Must take two arm restlers to operate that one. uncrashable plane he called it, much so daVinci wanted to live again and make it (in this guy's dream). guy even patented it, which is free too now. his scale model's rudders and propeller were too small though, wheels too close too.
We'll if DaVinci liked it so much, why not?
2 cents,
rc
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