Title:
【発明の名称】無人空中飛行体のシュラウド構造
Document Type and Number:
Japanese Patent JP3343252
Kind Code:
B2
Abstract:
An unmanned aerial vehicle having a toroidal fuselage that surrounds a pair of coaxial, multi-bladed, counter-rotating rotors. The toroidal fuselage has an airfoil profile that is optimized to provide high hover efficiency and produce a pressure distribution that provide high lift forces. The airfoil profile is further optimized to counteract the undesirable nose-up pitching moments experienced by ducted rotary-type UAVs in forward translational flight.
Inventors:
Mofit, Robert Sea.
Owen, Stephen Jay.
Owen, Stephen Jay.
Application Number:
JP50429493A
Publication Date:
November 11, 2002
Filing Date:
July 14, 1992
Export Citation:
Assignee:
United Technologies Corporation
International Classes:
B64C27/10; B64C27/20; B64C29/00; (IPC1-7): B64C27/20; B64C27/10; B64C29/00
Domestic Patent References:
| JP4231290A | ||||
| JP367799A | ||||
| JP63227497A | ||||
| JP6509770A |
Other References:
【文献】特許2911643(JP,B2)
【文献】米国特許3477168(US,A)
【文献】米国特許3477168(US,A)
Attorney, Agent or Firm:
Fujiya Shiga (1 person outside)