초록 ▼

A thermal management system includes a cooling duct system that locates a ram air intake and an exhaust through a first aircraft surface above a second aircraft surface which locates a fan intake. During ground operations, an anti-re-ingestion door is open and a ram air door is closed such that the

A thermal management system includes a cooling duct system that locates a ram air intake and an exhaust through a first aircraft surface above a second aircraft surface which locates a fan intake. During ground operations, an anti-re-ingestion door is open and a ram air door is closed such that the fan system may draw relatively cooler air from below the aircraft and exhaust the heated air above the aircraft to minimize re-ingestion of the heated exhaust. During flight operations, the anti-re-ingestion door is closed and the ram air door is open such that ram airflow communicates through the fan system prior to communication through the heat exchanger. Both the anti-re-ingestion door and the ram air door may also be operated in flight.

대표청구항 ▼

What is claimed is: 1. An aircraft cooling air duct system comprising: a plenum; a ram air intake in communication with said plenum; a fan intake in communication with said plenum; and an exhaust in communication with said plenum, said exhaust at least partially above said fan intake and transverse

What is claimed is: 1. An aircraft cooling air duct system comprising: a plenum; a ram air intake in communication with said plenum; a fan intake in communication with said plenum; and an exhaust in communication with said plenum, said exhaust at least partially above said fan intake and transverse to said ram air intake such that a fan airflow direction from said fan intake through said exhaust is generally transverse to a ram air in direction from said ram air intake. 2. The system as recited in claim 1, wherein said fan intake is below an aircraft waterline and said exhaust is above said aircraft waterline. 3. The system as recited in claim 1, wherein said fan intake communicates through a first surface and said exhaust communicates through a second surface different than said first surface. 4. The system as recited in claim 1, further comprising an anti-re-ingestion door movable between an open position to permit fan airflow through said fan intake to said plenum and a closed position to block said fan airflow from said fan intake to said plenum. 5. The system as recited in claim 4, wherein said anti-re-ingestion door is faceted. 6. The system as recited in claim 4, wherein said anti-re-ingestion opens outward relative said fan intake. 7. The system as recited in claim 1, further comprising a FOD screen within said fan intake. 8. The system as recited in claim 1, further comprising a blow-in door in communication with said plenum. 9. The system as recited in claim 1, further comprising a ram air door movable between an open position which permits ram airflow from said ram air intake to said plenum and a closed position which prevents said ram airflow from said ram air intake to said plenum. 10. The system as recited in claim 9, further comprising an anti-re-ingestion door movable between an open position to permit fan airflow through said fan intake to said plenum and a closed position to block said fan airflow from said fan intake to said plenum. 11. An aircraft thermal management system comprising: a heat exchanger; a fan system in communication with said heat exchanger; a ram air intake in communication with said heat exchanger through said fan system; a fan intake in communication with said heat exchanger through said fan system; and an exhaust in communication with said heat exchanger, said exhaust at least partially above said fan intake and transverse to said ram air intake such that a fan airflow direction from said fan intake through said exhaust is generally transverse to a ram air in direction from said ram air intake. 12. The system as recited in claim 11, wherein said fan intake is below an aircraft waterline and said exhaust is above said aircraft waterline. 13. The system as recited in claim 11, wherein said fan intake communicates through a first aircraft surface and said exhaust communicates through a second aircraft surface different than said first aircraft surface. 14. The system as recited in claim 11, wherein said heat exchanger is a liquid-to-air heat exchanger. 15. The system as recited in claim 14, wherein said liquid-to-air heat exchanger is in fluid communication with a fuel system. 16. The system as recited in claim 11, further comprising: a ram air door movable between an open position which permits ram airflow from said ram air intake to said plenum and a closed position to block said ram airflow from said ram air intake to said plenum; and an anti-re-ingestion door movable between an open position to permit fan airflow through said fan intake to said plenum and a closed position to block said fan airflow from said fan intake to said plenum. 17. The system as recited in claim 16, further comprising a blow-in door in communication with said plenum. 18. The system as recited in claim 11, wherein said fan system is directly coupled to said heat exchanger within a common plenum. 19. A method of thermal management comprising the steps of: (A) communicating airflow through a RAM air intake to plenum; (B) communicating airflow through a fan intake to the plenum; and (C) exhausting the airflow through an exhaust located at least partially above the fan intake transverse to the ram air intake such that a fan airflow direction from said fan intake through said exhaust is generally transverse to a ram air in direction from said ram air intake. 20. The method of thermal management as recited in claim 19, wherein said step (A) comprises the steps of: (a) opening an anti-re-ingestion door to permit fan airflow through a fan intake. 21. The method of thermal management as recited in claim 19, wherein said step (A) comprises the steps of: (a) opening a ram air door to permit ram airflow through the ram air intake. 22. The method of thermal management as recited in claim 19, wherein said step (A) comprises the steps of: (a) opening an anti-re-ingestion door to permit fan airflow through a fan intake; and (b) opening a ram air door to permit ram airflow through the ram air intake. 23. The system as recited in claim 1, wherein said fan intake communicates through a lower fuselage surface and said exhaust communicates through an upper fuselage surface different than said lower fuselage surface. 24. The system as recited in claim 1, further comprising a fan system downstream of said ram air intake and said fan intake. 25. The system as recited in claim 24, further comprising a heat exchanger downstream of said fan system and upstream of said exhaust. 26. The system as recited in claim 25, further comprising a housing which mounts said heat exchanger and said fan system within said plenum. 27. The system as recited in claim 1, further comprising a fan system within said plenum to direct said fan airflow direction from said fan intake through said exhaust. 28. The system as recited in claim 1, wherein said fan intake is in communication with said plenum through a ram air duct generally transverse to said plenum, said ram air duct and said plenum forms a generally T-shape cooling duct system. 29. The system as recited in claim 1, wherein said fan intake is in communication with said plenum through a ram air duct generally transverse to said plenum, said ram air duct and said plenum forms a generally L-shape cooling duct system.