Hi friends, about the ever-fascinating and intriguing matter of disc-shaped wing aircraft I found some very old paper clippings depicting the Nemeth aircraft, I think designed by the same Paul Nemeth that in the following years designed and built an helicopter (already subject of posts in this blog). My clippings are dated March 1934 and the subject is an experimental aircraft apparently named Circle (and not Umbrellaplane as some sources reports) designed by Stephen Paul Nemeth, veteran Chicago aeronautical engineer. Below there is an abstract from e Russian webpage I think is a copy of the Aerofiles one. Another design called the Umbrellaplane (sic) was also known as the Roundwing. It was built in 1934 = 2pOhwM; 90hp Lambert; span: 16'0" length: 20'0" v: 120/95-100/20-25. Circular wing on a lengthened Alliance Argo fuselage for STOL performance [X13651]— initial experiments by Paul Nemeth with rotating wingforms go back to 1929. Designed by Nemeth and built by students at Miami University (OH) to test circular wing configuration. Repowered with 120hp Warner Scarab, later reworked as divided wing. Name has been seen spelled Nuneth. For the aircraft we found also the names Roundwing and Backyard Flyer. The fuselage is that from the Alliance A-1 Argo light aircraft (I also enclosed a photo of it) with the original 90 HP Lambert engine replaced by a 125 HP Warner; in fact, usually Argo had a Hess Warrior seven-cylinder radial, rated at 125 HP. Naturally, the wing, perfectly round, is totally new. This strange machine was really flown, as we have a still from film footage, reaching 110-120 mph (the designer claimed 135), cruising at 95-100 mph and landing at 20-25 mph in a 25 ft area, descending with a 60° angle. The news of the first fligh is dated March 21, 1934. I ever heard from aeronautical engineers that this type of low aspect ratio wing offer very marginal performance, except for STOL, but in about a century of flight the disc-shaped aircraft every so often resurface Nico