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 Title: |
US5303879:
Aircraft with a ducted fan in a circular wing
[ 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 Disc Holding SA, Fribourg, Switzerland
other patents from SKY DISK HOLDING SA (517755) (approx. 2)
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| Published / Filed: |
1994-04-19
/ 1993-01-26
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| Application Number: |
US1993000009246
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| IPC Code: |
Advanced:
B64C 27/20;
B64C 29/00;
B64C 39/00;
B64C 39/06;
Core:
B64C 27/00;
more...
IPC-7:
B64C 29/00;
B64C 39/06;
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| U.S. Class: |
Current:
244/023.C;
244/012.2;
244/023.B;
244/023.D;
244/045.A;
244/082;
D12/319;
Original:
244/023.C;
244/012.2;
244/023.B;
244/023.D;
244/082;
244/045.A;
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| Field of Search: |
244/006,7 B,7 A,10,12.1,12.2,12.4,12.5,12.6,23 B,23 C,23 D,67,82,45 A
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| Priority Number: |
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| Abstract: |
The aircraft comprises a rotor with a vertical axis arranged in a housing for generating a lift exceeding the weight of the aircraft. The housing is essentially shaped as a circular wing. A first way of guiding air is provided for controlling the air stream generated by the rotor, by means of which the position of the aircraft can be controlled in hovering flight. From hovering flight, the aircraft can be moved into a cruise flight, where the lift of the aircraft is generated aerodynamically by the circular wing of the housing and its forward thrust by a propeller. For the transition between hovering flight and cruise flight, a second way of guiding air is provided for controlling the pitch of the aircraft. The structure for the second way of guiding air is arranged outside a zone defined by the air stream of the rotor.
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| Attorney, Agent or Firm: |
Fish & Richardson ;
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| Primary / Asst. Examiners: |
Bucci, David A.; Ansley, Virna Lissi
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| Maintenance Status: |
E2 Expired Check current status
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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 IE IT LI LU MC NL PT SE
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| Family: |
Show 13 known family members
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First Claim:
Show all 21 claims |
I claim:
1. An aircraft comprising a housing shaped as an essentially circular wing for generating an aerodynamic lift in a horizontal air flow,
- means for generating a horizontal thrust in a principal forward direction,
- at least one nonpivotal driven rotor with an essentially vertical axis of rotation for generating a rotor air stream, said rotor being arranged in said housing and designed for generating a lift exceeding the weight of said aircraft,
- first air guiding means arranged within said rotor air stream adjustable for controlling said rotor air stream, said first air guiding means comprising radially extending vanes with pairs of adjacent vanes being adapted to be pivoted in opposite directions, said first air guiding means being capable of substantially preventing undesirable pitch of said aircraft during a portion of flight, and
- second air guiding means arranged outside a zone defined by said rotor air stream, which second air guiding means are shaped for influencing the pitch of the aircraft during flight along said principal forward direction.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 16 U.S. patent(s) that reference this one
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