Metal working – Method of mechanical manufacture – Rocket or jet device making
Patent
1997-12-22
1999-05-18
Cuda, I
Metal working
Method of mechanical manufacture
Rocket or jet device making
29428, B23P15/00
Patent
active
059039760
ABSTRACT:
The invention relates to a method of manufacturing an enclosure containing hot gases cooled by transpiration. The enclosure comprises a porous wall and means for applying a cooling fluid to the outside face of the porous wall to cause a flow of cooling fluid to pass through the porous wall by transpiration. The cooling fluid application means is formed by disposing a plurality of cooling liquid distribution pipes regularly around the porous wall and terminating tangentially on its outside face in a plurality of superposed horizontal injection levels. Feed channels are provided crossing substantially perpendicularly through the distribution pipes, formed between each of them, and connected to cooling liquid feed means. Calibration ducts of determined section are provided, connecting, at each of the injection levels, the vertical feed channels to the horizontal distribution pipes surrounding them, to deliver predetermined headloss to the inside face of the porous wall. The headloss is adapted as a function of the zone to be cooled to optimize cooling flow rates along the porous wall.
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"Transpiration and Regenerative Cooling of Rocket Engine", NTIS Tech Notes, Jan. 1990, Springfield, Virginia, U.S.A., pp. 45, XP 000104292.
Beaurain Andre
Tiret Etienne
Cuda I
Societe Europeenne de Propulsion
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