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Circular winged and flying disc designs...

TsrJoe

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DELETED POST (please remove from the thread)
 

Skybolt

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Ever heard of the US 1959 concept of "strategic wing, tactical disk"?
 

Antonio

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Ever heard of the US 1959 concept of "strategic wing, tactical disk"?
No ???

what is it?
 

Matej

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I have a lot of answers about circular winged aircrafts, but I need to know, what exactly do you want to know. Is this the design you are searching for?
 

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McColm

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Vought brought out theXF5U Flying Pancake, only one prototype was built.
 

Stargazer2006

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Vought did the V-173 "Flying Pancake" (once test-flown by none other than Charles Lindbergh himself) and then the XF5U-1 Skimmer .
 

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robunos

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I thought that the consensus here was that the 'Jet Skimmer' was not a genuine concept, see here:-

http://www.secretprojects.co.uk/forum/index.php/topic,6213.msg51193.html#msg51193

cheers,
Robin.
 

Stargazer2006

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Actually I thought the matter had been settled and it was a proper Vought project. Maybe not... Let me remove it from here then until we know for sure.
 

Stargazer2006

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As I was browsing through a series of photos taken by my wife on a week-end she did with a friend and the kids, I came across this... I don't believe for a minute that the original Vought V-173 would have ended up at the Futuroscope science-themed resort, but then why would they, out of all aircraft designs, have chosen it for a full-scale outdoors display? ??? ??? ???
 

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Stargazer2006

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Thanks for searching. Zooming in on the PDF plan is quite instructive... the replica is located near a restaurant called "La crêpe volante" (the flying pancake in French)...
 

Nik

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The 'flying pancake' is surely one of those 'what-if' designs, in this case missing its intended V/STOL 'escort carrier' niche and being overtaken by both mega-carriers and the jet age...

( IIRC, drive-line vibration plus non-standard props plus 'YouCan'tBeSerious ??')

Also, many thanks for the EKIP reference. I took a clipping from a newspaper with one of those piccies, but never saw either again.

Like the Ekranoplan, the EKIP looks like it may find a niche some-when. FWIW, it might suit a future short-field supply UAV role better than cargo dirigibles...

OT: It, um, looks like it belongs on another planet, some-where without much relief, somewhere without big airports and big jets, but a hydrogen economy...
 

Stargazer2006

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A beautiful piece of artwork from the cover of Science et Vie N°346 (October 1946) showing the Vought F5U Skimmer in flight (and in olive drab!):
 

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Grey Havoc

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Another nice piece of artwork indeed.
 

Sundog

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Do the Arup designs qualify under this category?
 

Stargazer2006

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Sundog said:
Do the Arup designs qualify under this category?
I guess not... I guess they are what one would call "parabolic wing" designs.
 

Retrofit

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I find photos of this strange circular wing aircraft on TWITT webpage (http://www.twitt.org/Circular%20Wing%20Photos.html), but no information on its history.
No registration makes reasearch more problematic.

Any clue on this aircaft and its designer?

Thanks in advance
 

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Arjen

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That looks very much like a hovercraft.
 

Sundog

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Arjen said:
That looks very much like a hovercraft.
If you look at all of the pictures at the link provided it's definitely not a hovercraft. It has a round leading edge and a sharp, relatively speaking, trailing edge. It hasan airfoil shape in cross section and has the fences on the leading edge in order to prevent span wise flow. It also doesn't have anyway to blow air under it and it doesn't have a skirt.

What I don't understand is the choice of the bicycle under carriage. In an aircraft like this it isn't going to save you much in weight and lower the drag much for what you're going to sacrifice in ground handling and take-off and landing characteristics.
 

Arjen

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That'll teach me to follow links.
The craft's shape reminded me of the P-GEM hovercraft, I assumed a similarly shaped craft would be a hovercraft too.
 

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aim9xray

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Sundog said:
What I don't understand is the choice of the bicycle under carriage. In an aircraft like this it isn't going to save you much in weight and lower the drag much for what you're going to sacrifice in ground handling and take-off and landing characteristics.
The outer wing panels look to be removable or foldable (for trailer carriage?) so putting the main landing gear in the panels would make life more difficult. Plus you do save some in weight and cost (if you consider cost as an independent variable). The large number of fences on the leading edge would indicate that there were some spanwise airflow problems - I had always wondered why Zimmerman chose a straight leading edge for the V-173 and XF5U - this might be a hint why!
 

Cy-27

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Nemeth Parasol Monoplane

The Nemeth Parasol prototype was a tail-dragger that used a circular parasol wing. It used a lengthened fuselage from a 1920s Alliance Argo biplane, and originally powered by a Lambert 90 h.p. engine. It was conceived by Steven P. Nemeth and the aim was to create a STOL, stall-proof aeroplane which could be landed anywhere. Nemeth had been a flight instructor at the McCook field, Dayton, Ohio before it shut down in 1927. He then went on with experiments on rotating and circular wings for several years. The original machine was constructed by Miami University students based on Nemeth’s design, so they could test configurations of circular wings. The resulting strange aircraft was called the Nemuth Parasol, and it was tested in 1934 with a Warner Scarab engine.

There is also a web page on the design with higher quality images at the Incredible Aircraft section of the Disciples of Flight web site: https://disciplesofflight.com/nemeth-parasol-strange-aircraft/

Source:

Aero Digest 1934
 

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John Frazer

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The Nemeth worked very well. Stall and spin-proof, capable of climbing or descending very steeply, very slow landing speed and short roll. Faster than the biplane the fuselage came from. It's not reported if it was as maneuverable as the Alliance biplane.
Like the Arups, widely ignored.

More recently, the Rowe UFO has flown in at least 3 iterations. No word on handling.
Some might doubt without data, if it works as well as the Arups or Little Bird-3 or Facetmobile low-aspect-ratio all-wing-body
 

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