Enclosure containing hot gases cooled by transpiration, in particular the thrust chamber of a rocket engine
US5363645A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | May 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S165/907
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An enclosure containing hot gases cooled by transpiration includes means for applying a cooling fluid, said means comprising a hydraulic calibration sheath applied on the outside face of a porous wall that forms the inside portion of the enclosure, said sheath being made of a material that is proof to the cooling liquid and that is perforated by a multiplicity of microperforations having a distribution density that varies progressively over various different portions of said wall so as to provide greater perforation density wherever the heat flow to be cooled reaching the porous wall is high, and a cooling fluid feed volume formed between the sheath secured to the porous wall and an outer sealing envelope so as to apply a pre-determined flow rate per unit of area to said sheath in various different zones of the wall of the enclosure, spacers being interposed between the hydraulic calibration sheath and the outer sealing envelope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.