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 Title: |
US5064143:
Aircraft, having a pair of counter rotating rotors
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Bucher, Franz; Basel, Switzerland
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| Assignee: |
Sky Disk Holding SA, Fribourg, Switzerland
other patents from SKY DISK HOLDING SA (517755) (approx. 2)
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| Published / Filed: |
1991-11-12
/ 1990-04-06
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| Application Number: |
US1990000505787
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| IPC Code: |
Advanced:
B64C 27/10;
B64C 27/20;
B64C 29/00;
B64C 39/00;
Core:
B64C 27/00;
more...
IPC-7:
B64C 29/00;
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| U.S. Class: |
Current:
244/023.C;
244/012.2;
244/012.3;
244/023.B;
Original:
244/023.C;
244/012.2;
244/012.3;
244/023.B;
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| Field of Search: |
244/12.2,12.3,23 C,23 B,17.19
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| Priority Number: |
| 1989-04-19 |
CH1989000001492 |
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| Abstract: |
The aircraft has a pair of rotors driven to counter-rotate within a housing. The housing has adjustable air guiding discuss for the rotor stream and a airfoil-like outer shape to generate lift at horizontal flight. The air guiding devices include a circular arrangement of a plurality of individual sectors having tangentially extending blades arranged in a zone below the rotors. In each sector the blades are adjustable in their position relative to the rotor stream. In at least some of the sectors, the blades are arranged in pairs for an adjusting movement in opposite relative sense. The air guiding devices allow precise and easy control of the aircraft maneuvers.
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| Attorney, Agent or Firm: |
Fish & Richardson ;
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| Primary / Asst. Examiners: |
Peters, Jr., Joseph F.; Ellis, Christopher P.
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| Maintenance Status: |
CC Certificate of Correction issued
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
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| Family: |
Show 13 known family members
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First Claim:
Show all 11 claims |
I claim:
1. An aircraft for hovering and horizontal forward flight, having a housing with a flight axis defining a forward flight direction, at least a pair of rotatively driven, coaxial rotors located within said housing for generating a rotor air stream and a multiplicity of adjustable air guiding means arranged in said rotor air stream, said housing along said flight axis being shaped as an airfoil section with an upper surface and a lower surface, said upper surface comprising a circular air inlet coaxial with said pair of rotors and said lower surface comprising a circular air outlet coaxial with said pair of rotors, said circular air outlet being divided into a plurality of blade array sections, each comprising a plurality of elongate blade members having a longitudinal swivelling axis and forming air guiding surfaces, wherein for each blade array section the blade members are collectively adjustable in their angular position relative to said air stream about their swivelling axis and wherein in a part of said blade array sections, adjacent blade members are adjustable in opposite sense to assume complementary angular positions between an opened and a closed position for controlling the lifting forces without generating a substantial horizontal component of the air stream passing said part of blade array sections.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 34 U.S. patent(s) that reference this one
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