IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0270697
(2016-09-20)
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등록번호 |
US-9821863
(2017-11-21)
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발명자
/ 주소 |
|
출원인 / 주소 |
- American Dynamics Flight Systems, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
11 |
초록
▼
A bluff body adaptive wake reduction system includes a series of fairings mounted to outer surfaces of the aft end of the road vehicle. The fairings are streamlined in geometry with an outer surface, a partially hollow core, and with a rear end surface curved such that left and right hand sides are
A bluff body adaptive wake reduction system includes a series of fairings mounted to outer surfaces of the aft end of the road vehicle. The fairings are streamlined in geometry with an outer surface, a partially hollow core, and with a rear end surface curved such that left and right hand sides are convergent behind the vehicle. The fairings are coupled to at least one ram air inlet and also include at least one blown slot positioned on the rear end of the fairings enabling air flow to exit the fairings tangent to the rear end surface of the fairings. Air flow enters the system through the ram air inlets and exits through the blown slots. Air flow exiting the blown slots promotes flow traveling over the outer surface to remain attached to the outer surface and thus to the rear end surface. The rear end surface then deflects air flow to follow a convergent trajectory behind the vehicle in such a fashion as to reduce the size of the wake, and as a result reduce the aerodynamic drag.
대표청구항
▼
1. An aerodynamic drag reducing device for a vehicle, comprising: at least one ram air inlet adapted to be mounted to a vehicle, wherein the at least one ram air inlet is positioned in a first direction;a flow passage fluidly coupled to the at least one ram air inlet;a right side fairing in fluid co
1. An aerodynamic drag reducing device for a vehicle, comprising: at least one ram air inlet adapted to be mounted to a vehicle, wherein the at least one ram air inlet is positioned in a first direction;a flow passage fluidly coupled to the at least one ram air inlet;a right side fairing in fluid communication with the flow passage and a left side fairing in fluid communication with the flow passage; andat least one blown slot connected to the right side fairing having an outlet and at least one blown slot connected to the left side fairing having an outlet, wherein air enters through the at least one ram air inlet, flows up through the right and left side fairings, and exits the device through the outlet of each of the at least one blown slots connected to the right side fairing and the left side fairing configured to reduce wake and reduce aerodynamic drag for the vehicle. 2. The device of claim 1, wherein each side fairing further includes a hollow core further defining the flow passage and an outer surface, wherein a rear surface of the outer surface is curved to direct airflow in a downward trajectory behind the vehicle. 3. The device of claim 1, wherein the first direction is pointed towards a fore end of the vehicle. 4. The device of claim 1, wherein the at least one blown slot connected to the right side fairing and the at least blown one slot connected to the left side fairing are positioned in a second direction opposite from the first direction. 5. The device of claim 1, wherein the at least one ram air inlet is positioned along a bottom side of an aft end of the vehicle. 6. The device of claim 1, wherein the right side fairing further includes an inlet having an internal passage way connected to the outlet of the at least one blown slot of the right side fairing. 7. The device of claim 1, wherein the left side fairing further includes an inlet having an internal passage way connected to the outlet of the at least one blown slot of the left side fairing. 8. The device of claim 1, further comprising: a top fairing in fluid communication with the flow passage; andat least one blown slot connected to the top fairing having an outlet, wherein air enters through the at least one ram air inlet into the flow passage, flows through the top fairing, and exits the device through the outlet of the at least one blown slot connected to the top fairing. 9. The device of claim 8, wherein the top fairing further includes a hollow core further defining the flow passage and an outer surface, wherein a rear surface of the outer surface is curved to direct airflow in a downward trajectory behind the vehicle. 10. The device of claim 8, wherein the at least one blown slot connected to the top fairing is positioned in a second direction opposite from the first direction. 11. The device of claim 1, wherein the at least one ram air inlet is located along at least one of a top side of the vehicle, an edge of the right side fairing, an edge of the left side fairing, or an edge of the top fairing. 12. An aerodynamic drag reducing device for a vehicle, comprising: at least one ram air inlet adapted to be mounted to a vehicle, wherein the at least one ram air inlet is positioned in a first direction;a flow passage fluidly coupled to the at least one ram air inlet;a right side fairing in fluid communication with the flow passage and a left side fairing in fluid communication with the one flow passage;a top fairing in fluid communication with the flow passage;at least one blown slot connected to the right side fairing and having an outlet, wherein air enters the at least one ram air inlet into the flow passage and is directed into the at least one blown slot of the right side fairing and exits the outlet of the blown slot of the right side fairing; andat least one blown slot connected to the left side fairing and having an outlet, wherein air enters the at least one ram air inlet into the flow passage and is directed into the at least one blown slot of the left side fairing and exits the outlet of the blown slot of the left side fairing configured to reduce wake and reduce aerodynamic drag for the vehicle. 13. The device of claim 12, wherein the top fairing includes at least one blown slot connected to the top fairing and having an outlet, wherein air enters the at least one ram air inlet into the flow passage and is directed into the at least one blown slot of the top fairing and exits the outlet of the blown slot of the top fairing configured to reduce wake and reduce aerodynamic drag for the vehicle. 14. The device of claim 12, wherein the at least one ram air inlet is positioned along a bottom side of an aft end of the vehicle. 15. The device of claim 12, wherein the at least one ram air inlet includes a plurality of ram air inlets connected to the left and right side fairings and positioned along a bottom side of an aft end of the vehicle, wherein air enters through the plurality of ram air inlets and into the flow passage. 16. The device of claim 12, wherein the left side fairing further includes an inlet connected to the at least one blown slot by an internal flow passage. 17. The device of claim 12, wherein the right side fairing further includes an inlet connected to the at least one blown slot by an internal flow passage. 18. The device of claim 12, wherein each fairing further includes a hollow core further defining the flow passage and an outer surface, wherein a rear surface of the outer surface is curved to direct airflow in a downward trajectory behind the vehicle. 19. The device of claim 12, wherein the at least one ram air inlet is located along at least one of a top side of the vehicle, an edge of the right side fairing, an edge of the left side fairing, or an edge of the top fairing. 20. The device of claim 12, wherein the first direction is pointed towards a fore end of the vehicle.
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