Personal flight device incorporating radiator cooling passage
A personal flight device which includes a housing which is securable to a pilot having at least one pair of ducted fans, one fan of the at least one pair of ducted fans is mounted to one side of the housing, the other fan of the at least one pair of ducted fans mounted to the other side of the housing. Each fan rotates about an axis of rotation so as to draw air through the corresponding duct from an entry end of the duct to an exit end of the duct. At least one radiator is also provided. Each engine of the at least one engine is cooled by a radiator of the at least one radiator. Each radiator of the at least one radiator is associated with at least one passage having an entry end in communication with one surface of the radiator and an exit end adjacent the entry end of one duct of the ducted fans.
1. A personal flight device which includes:
a housing which is securable to a pilot;
at least one pair of ducted fans, one fan of of said at least one pair of ducted fans mounted to one side of the housing, the other fan of of said at least one pair of ducted fans mounted to the other side of the housing;
wherein each fan rotates about an axis of rotation so as to draw air through the corresponding duct from an entry end of the duct to an exit end of the duct;
and wherein the axis of rotation of each fan is fixed relative to the housing;
at least one engine mounted on the housing for driving the fans such that each pair of fans of said at least one pair of ducted fans rotate in the same direction for producing thrust;
at least one radiator;
each engine of said at least one engine being cooled by a radiator of said at least one radiator;
each radiator of said at least one radiator being associated with at least one passage having an entry end in communication with one surface of the radiator and an exit end adjacent the entry end of one duct of said ducted fans.
2. The personal flight device as claimed in claim 1 , wherein the device includes only a single pair of ducted fans and a single engine.
3. The personal flight device as claimed in claim 2 , wherein said at least one passage associated with the radiator includes first and second passages; the first passage having an entry end in communication with approximately one half of one surface of the radiator and an exit end adjacent the entry end of one of said ducts; the second passage having an entry end in communication with approximately the other half of said one surface of the radiator and an exit end adjacent the entry end of the other of said ducts.
4. The personal flight device as claimed in claim 3 , wherein the plane of the or each radiator is substantially perpendicular to the longitudinal axes of the ducts.
5. The personal flight device as claimed in claim 3 , wherein each passage of said at least one passage has a constant cross-sectional area for a major portion of a length of said passage but widens to a larger cross-sectional area at the exit end.
6. The personal flight device as claimed in claim 1 , wherein the plane of the or each radiator is substantially perpendicular to the longitudinal axes of the ducts.
7. The personal flight device as claimed in claim 1 , wherein each passage of said at least one passage has a constant cross-sectional area for a major portion of a length of said passage but widens to a larger cross-sectional area at the exit end.
8. The personal flight device as claimed in claim 7 or claim 5 , wherein the cross-sectional area of the exit end of each passage of said at least one passage is approximately twice the cross-sectional area of the entry end of the or each passage.
9. The personal flight device as claimed in claim 1 , wherein each fan is secured to the housing such that the axis of rotation of each fan is substantially vertical when the device is secured to a pilot standing upright.
10. The personal flight device as claimed in claim 1 , further including a steering vane coupled to at least one fan of the at least one pair of ducted fans, said vane being controllable for directing the airflow leaving the at least one fan.
11. The personal flight device as claimed in claim 1 , wherein each engine of said at least one engine is selected from the group consisting of two-stroke internal combustion engines, four-stroke internal combustion engines, rotary engines, and gas turbine engines.
12. The personal flight device as claimed in claim 1 , further including a drive means driven by the at least one engine, said driven drive means driving the at least one pair of fans.
13. The personal flight device as claimed in claim 12 , wherein the drive means is a single drive.
14. The personal flight device as claimed in claim 12 , wherein the drive means is a double drive.
15. The personal flight device as claimed in claim 12 , wherein the drive means is a drive selected from the group consisting of chain drives, fluid drives, and belt drives.
16. The personal flight device as claimed in claim 1 , wherein the device includes a set of stators arranged in each fan duct to straighten the airflow leaving that fan.