[특허]Integral rat generator cooling holes

HAMILTON SUNDSTRAND CORPORATION

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Integral rat generator cooling holes

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-015/10 F02C-006/00 H02K-007/18 H02P-009/04 B64D-041/00 H02K-005/20 H02K-009/02 H02K-015/14 F02B-063/04
출원번호	US-0174479 (2016-06-06)
등록번호	US-10077118 (2018-09-18)
발명자 / 주소	Bortoli, Stephen Michael Russ, David Everett
출원인 / 주소	HAMILTON SUNDSTRAND CORPORATION
대리인 / 주소	Cantor Colburn LLP
인용정보	피인용 횟수 : 0 인용 특허 : 25

초록
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A ram air turbine having: a strut assembly having an outer housing enclosing a first inner chamber; a generator housing operatively connected to the strut assembly, the generator housing having an outer surface enclosing a second inner chamber, the second inner chamber being fluidly connected to first inner chamber; a turbine assembly operably connected to the strut assembly, the turbine assembly in operation rotates in freestream air; and a power generation device mechanically connected to the turbine assembly and located within the second inner chamber, the power generation device generates power as turbine assembly rotates. The strut assembly includes a first screen portion having a plurality of inlet holes integrally formed in the outer housing. The generator housing includes a second screen portion having a plurality of outlet holes integrally formed in the outer surface. Freestream air passes through inlet holes, over the power generation device, and out outlet holes.

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1. A ram air turbine comprising: a strut assembly having an outer housing enclosing a first inner chamber;a generator housing operatively connected to the strut assembly, the generator housing having an outer surface enclosing a second inner chamber, wherein the second inner chamber is fluidly connected to the first inner chamber;a turbine assembly operably connected to the strut assembly, the turbine assembly in operation rotates in freestream air; anda power generation device mechanically connected to the turbine assembly and located within the second inner chamber, the power generation device in operation generates power as the turbine assembly rotates,wherein the strut assembly includes a first screen portion having a plurality of inlet holes formed in a curved surface of the outer housing of the strut assembly, the first screen portion in operation allows the freestream air to enter the outer housing through the plurality of inlet holes and pass over the power generation device,wherein each of the plurality of inlet holes are individually formed circular holes, the plurality of inlet holes being oriented in a staggered hole pattern,wherein the generator housing includes a second screen portion having a plurality of outlet holes formed in the outer surface, the second screen portion in operation allows the freestream air to exit the generator housing after it has passed over the power generation device. 2. The ram air turbine of claim 1, wherein: each of the plurality of inlet holes has a diameter of less than 0.281 inches (0.714 centimeters). 3. The ram air turbine of claim 1, wherein: each of the plurality of outlet holes has a diameter of less than 0.281 inches (0.714 centimeters). 4. The ram air turbine of claim 1, wherein: the plurality of outlet holes are oriented in a staggered hole pattern. 5. The ram air turbine of claim 1, wherein: the plurality of inlet holes are segmented into three separate groups, the groups being separated from each other by structural load paths of the outer housing. 6. The ram air turbine of claim 1, wherein: the plurality of outlet holes are segmented into six separate groups, the groups being separated from each other by structural load paths of the generator housing. 7. The ram air turbine of claim 5, wherein: the outer housing at the first screen portion has a variable thickness, the thickness of the outer housing being thinnest at a center point of the first screen portion and increases in thickness circumferentially outward from the center point. 8. The ram air turbine of claim 5, wherein: a ratio of an area of the plurality of inlet holes to an area of the first screen portion is less than 0.6. 9. A method of manufacturing a ram air turbine comprising: forming an outer housing of a strut assembly, the outer housing enclosing a first inner chamber;operably connecting a turbine assembly to the strut assembly, the turbine assembly in operation rotates in freestream air;forming a generator housing having an outer surface enclosing a second inner chamber;installing a power generation device into the second inner chamber, the power generation device in operation generates power as the turbine assembly rotates;operably connecting the strut assembly to the generator housing, the second inner chamber being fluidly connected to the first inner chamber; andmechanically connecting the power generation device to the turbine assembly,wherein the strut assembly includes a first screen portion having a plurality of inlet holes formed in a curved surface of the outer housing of the strut assembly, the first screen portion in operation allows the freestream air to enter the outer housing through the plurality of inlet holes and pass over the power generation device,wherein each of the plurality of inlet holes are individually formed circular holes, the plurality of inlet holes being oriented in a staggered hole pattern,wherein the generator housing includes a second screen portion having a plurality of outlet holes formed in the outer surface, the second screen portion in operation allows the freestream air to exit the generator housing after it has passed over the power generation device. 10. The method of claim 9, wherein: each of the plurality of inlet holes has a diameter of less than 0.281 inches (0.714 centimeters). 11. The method of claim 9, wherein: each of the plurality of outlet holes has a diameter of less than 0.281 inches (0.714 centimeters). 12. The method of claim 9, wherein: the plurality of outlet holes are oriented in a staggered hole pattern. 13. The method of claim 9, wherein: the plurality of inlet holes are segmented into three separate groups, the groups being separated from each other by structural load paths of the outer housing. 14. The method of claim 9, wherein: the plurality of outlet holes are segmented into six separate groups, the groups being separated from each other by structural load paths of the generator housing. 15. The method of claim 9, wherein: the outer housing at the first screen portion has a variable thickness, the thickness of the outer housing being thinnest at a center point of the first screen portion and increases in thickness circumferentially outward from the center point. 16. The method of claim 9, wherein: a ratio of an area of the plurality of inlet holes to an area of the first screen portion is less than 0.6. 17. A method of cooling a power generation device of a ram air turbine, comprising: allowing freestream air to enter an outer housing of strut assembly through a plurality of inlet holes formed in a curved surface the outer housing of the strut assembly, wherein each of the plurality of inlet holes are individually formed circular holes, the plurality of inlet holes being oriented in a staggered hole pattern;passing the freestream air over the power generation device within a generator housing, the generator housing being fluidly connected to the outer housing; andallowing the freestream air to exit the generator housing through a plurality of outlet holes formed in an outer surface of the generator housing. 18. The method of claim 17, wherein: each of the plurality of inlet holes has a diameter of less than 0.281 inches (0.714 centimeters).

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Integral rat generator cooling holes

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Integral rat generator cooling holes

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