| 单词 | film cooling |
| 释义 | > as lemmasfilm cooling film cooling n. the process or technique of cooling something by means of a film of liquid or gas; spec. (a) a form of evaporative cooling in which the coolant is distributed as a thin film on a surface to increase the rate of evaporation; (b) a technique by which an object (typically a turbine or part of an engine) is protected from the heat of its surroundings by an enveloping film of insulating gas. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > spacecraft > rocket > [noun] > types of rocket engine > cooling method film cooling1950 1910 Engineer-in-charge Apr. 15/2 For the class of installation capable of being handled on the pond, tank, or spray systems, film cooling is to be recommended. 1950 Sci. News 15 82 Film cooling [sc. in a space rocket]... Small holes are drilled through the wall of the combustion chamber so that fuel can leak through from the jacket... It boils and forms a protective film of comparatively cool vapour between these gases and the metal wall. 2011 Hobart Mercury (Nexis) 25 Nov. (Local section) 21 She returned to the University of Tasmania..after three years at Oxford University developing film cooling for gas turbines in jet engines. < as lemmas |
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