|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B64C-003/14 B64C-003/18 B64C-003/28 B64C-003/50|
|미국특허분류(USC)||244/130; 244/045R; 244/123.1; 244/216; 244/219|
|§371/§102 date||19990405 (19990405)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 2 인용 특허 : 125|
Slotted cruise airfoil technology allows production of a substantially unswept wing that achieves the same cruise speed as today's conventional jet airplanes with higher sweep. This technology allows the wing boundary layer to negotiate a strong recovery gradient closer to the wing trailing edge. The result is about a cruise speed of Mach=0.78, but with a straight wing. It also means that for the same lift, the super velocities over the top of the wing can be lower. With very low sweep and this type of cruise pressure distribution, natural laminar flow w...
1. A commercial jetplane capable of flying at a cruise speed of Mach=0.78 or above, comprising: a fuselage;a landing gear mounted on said fuselage;a single wing attached to said fuselage, said single wing being substantially unswept with a high aspect ratio, and including: a forward airfoil element having an upper surface and a lower surface;an aft airfoil element having an upper surface and a lower surface;an internal structure comprising at least two spars extending from one tip to an opposing tip of said single wing, with a rear one of the spars being...