Cross flow fan with exit guide vanes
A cross flow fan to be incorporated into an aircraft comprises a cross flow fan rotor to be positioned in an aircraft, a drive arrangement for the cross flow fan rotor, and a plurality of vanes positioned downstream of the cross flow fan rotor. An aircraft is also disclosed.
1. A cross flow fan to be incorporated into an aircraft comprising:
a cross flow fan rotor to be positioned in an aircraft;
a drive arrangement for said cross flow fan rotor; and
a plurality of vanes positioned downstream of said cross flow fan rotor, said plurality of vanes turn air through distinct angles.
2. The cross flow fan as set forth in claim 1 , wherein a first vane spaced from a second vane in a direction of rotation of said fan rotor will turn the air through a greater angle than said second vane.
3. The cross flow fan as set forth in claim 2 , wherein vanes intermediate the first and second vane turn the air through angles which are intermediate to the angle of the first vane and the angle of the second vane.
4. The cross flow fan as set forth in claim 2 , wherein an outlet downstream of said plurality of vanes has a variable area nozzle which may be pivoted to control a cross-section of said outlet.
5. The cross flow fan as set forth in claim 1 , wherein an outlet provided downstream of said cross flow fan has a variable area nozzle which may be pivoted to control a cross-section of said outlet.
6. The cross flow fan as set forth in claim 1 , wherein said cross flow fan rotor is to be positioned in a tail section of an aircraft fuselage.
7. The cross flow fan as set forth in claim 1 , wherein said cross flow fan rotor is to be positioned in a wing of an aircraft.
8. The cross flow fan as set forth in claim 1 , wherein said drive arrangement incorporates at least one electric motor.
9. The cross flow fan as set forth in claim 1 , wherein an outlet provided downstream of said cross flow fan has a variable area nozzle which may be pivoted to control a cross-section of said outlet.
10. An aircraft comprising:
an aircraft body;
a cross flow fan rotor positioned in said aircraft body;
a drive arrangement for said cross flow fan rotor; and
a plurality of vanes positioned downstream of said cross flow fan rotor, said plurality of vanes turn air through distinct angles.
11. The aircraft as set forth in claim 10 , wherein a first vane spaced from a second vane in a direction of rotation of said fan rotor will turn the air through a greater angle than said second vane.
12. The aircraft as set forth in claim 11 , wherein vanes intermediate the first and second vane turn the air through angles which are intermediate to the angle of the first vane and the angle of the second vane.
13. The aircraft as set forth in claim 11 , wherein an outlet provided downstream of said cross flow fan has a variable area nozzle which may be pivoted to control a cross-section of said outlet.
14. The aircraft as set forth in claim 10 , wherein said drive arrangement incorporates at least one electric motor.
15. The aircraft as set forth in claim 10 , wherein an outlet provided downstream of said cross flow fan has a variable area nozzle which may be pivoted to control a cross-section of said outlet.
16. The aircraft as set forth in claim 10 , wherein said cross flow fan rotor is positioned in a wing of said aircraft body.
17. The aircraft as set forth in claim 10 , wherein said cross flow fan rotor is incorporated in a tail of said aircraft body.
18. The aircraft as set forth in claim 17 , wherein said aircraft body having a width to height ratio greater than or equal to about 1.5.