Missing wing types I d add the Rogallo wing that is some kind of a delta wing but soft as example of Circular wing the American Nemuth Parasol as a semicircular wing the Arup flying wings as an unclassifiable or inverted Delta the straight part as leading edge I d like having specific professional comments about the advantages and disadvantages and performance of the inverted delta the 1934 design of Raoul J Hoffman Popular Aviation March 1935 pp 163 and 196 and also one of the Fauvel flying wings the AV 10 in YouTube connected to the Arup airplanes films some other low aspect ratio inverted delta like wings appear There was another example of circular wing similar to the Coleoptere but of an ordinary width proposed in a hobbyists magazine to be built as toy but I m not currently able to retrieve the image and plans The Burnelli lifting fuselages can be considered another type of wing