Boundary-layer suction without motor-driven units for winged aircraft

摘要

An aircraft according to the patent application is an amalgamation, without any compromises, of a fast aircraft and a very slow aircraft, as becomes evident from the four claims and the description. In the case of a very small aircraft, a speed ratio of even 10:1 is possible, as a 2m model built in 1940 showed, in 1941, with a ratio of 371:37 kph (anti-aircraft gun observer, West Cologne). 1.) The reduced-pressure flow does not separate. Where a conventional aircraft reaches the critical speed immediately before landing, it must land! At this time, an aircraft according to the patent application still has somewhat more than three times the lift! That is not all. In addition: 2.) Increase in the wing area by virtually 50%! 3.) A higher angle of attack is possible, because there is no longer any critical speed. The advantages of a landing path reduced by 70-80%, that is to say to approximately a quarter, are self-evident. However, with less than 6 seats, the cost is too great, and four-seater aircraft uneconomically rarely have a landing speed over 100 kph. The limit is difficult to draw here, since a six-seater aircraft with suction manages even at around 50 to 60 kph. This category would be the highlight in the "third world", and primarily in Canada, up to the shuttle, as recognised specialists have told me.