Title:
【発明の名称】ダクト付同軸二重反転ロータを有する無人航空機
Document Type and Number:
Japanese Patent JP3343118
Kind Code:
B2
Abstract:
An integrated spline/cone seat subassembly (190) for an unmanned aerial vehicle (10) having a rotor assembly (100) that includes ducted, counter-rotating rotors (200, 202), comprising:a rotor shaft (128R or 130R) having an axis, said rotor shaft (128R or 130R) includinga primary shaft portion (192) having a first diameter (D1),an end shaft portion (194) having a second diameter (D2) and having a plurality of shaft splines (198) extending radially outwardly therefrom, anda conic transition portion (196) intermediate said primary and end shaft portions (192, 194), said conic transition portion (196) making a predetermined angle (β) with respect to said axis of said rotor shaft (128R or 130R); anda rotor hub (204) having a centerline (212), said rotor hub (204) having a shaft aperture (206) having a plurality of hub splines (208) extending radially inwardly therefrom;said plurality of hub splines (208) and said plurality of shaft splines (198) being interleaved in combination to provide a rotational interlock between said rotor hub (204) and said rotor shaft (128R or 130R) in the rotor assembly (100); characterized in thateach of said hub splines (208) having an outwardly tapered lower portion (210) that makes a predetermined angle (θ) with respect to said centerline (212); andsaid predetermined angle (θ) of said outwardly tapered lower portions (210) of said hub splines (208) being equal to said predetermined angle (β) of said conic transition portion (196) of said rotor shaft (128R or 130R) wherein said tapered lower portions (210) of said hub splines (208) abuttingly engage and are mechanically supported by said conic transition portion (196) of said rotor shaft (128R or 130R) in the rotor assembly (100).
Inventors:
Saikon, James P.
Hunter, David H.
Cole Hep, Fred W.
Claus, Timothy A.
Milia, Vincent F.
Ferns, Kennis M.
Farrell, Marvin Dee.
Sandy, David F.
Beatty, Robert Dee.
Hansen, Bruce Dee.
Hunter, David H.
Cole Hep, Fred W.
Claus, Timothy A.
Milia, Vincent F.
Ferns, Kennis M.
Farrell, Marvin Dee.
Sandy, David F.
Beatty, Robert Dee.
Hansen, Bruce Dee.
Application Number:
JP50245294A
Publication Date:
November 11, 2002
Filing Date:
June 18, 1993
Export Citation:
Assignee:
United Technologies Corporation
International Classes:
B64C27/10; B64C27/12; B64C27/14; B64C27/20; B64C27/33; B64C27/46; B64C27/473; B64C27/605; B64C29/00; B64C39/02; B64C39/06; F16C11/06; F16D1/02; F16D1/05; F16D1/06; F16D3/06; F16D3/18; F16D41/07; F16F15/10; F16H1/14; F16H1/22; F02B75/02; (IPC1-7): B64C27/20; B64C27/10; B64C27/12; B64C27/33; B64C27/473; B64C29/00; B64C39/02
Domestic Patent References:
| JP4231290A | ||||
| JP63227497A | ||||
| JP367799A | ||||
| JP6509770A |
Attorney, Agent or Firm:
Fujiya Shiga (1 person outside)