cryogenic cooling unit
21Stirling engine — Alpha type Stirling engine. There are two cylinders. The expansion cylinder (red) is maintained at a high temperature while the compression cylinder (blue) is cooled. The passage between the two cylinders contains the regenerator …
22Scramjet — Part of a series on Aircraft propulsion Shaft engines (to drive pr …
23Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …
24ASHRAE Handbook — The ASHRAE Handbook is the four volume flagship publication of the nonprofit technical organization American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc. (ASHRAE). This Handbook is considered the practical repository of… …
25Liquefied natural gas — Not to be confused with Natural Gas Liquids (NGL). Liquefied natural gas or LNG is natural gas (primarily methane, CH4) that has been converted to liquid form for ease of storage or transport. Liquefied natural gas takes up about 1/600th the… …
26Liquid hydrogen — (LH2 or LH2) is the liquid state of the element hydrogen. It is a common liquid rocket fuel for rocket applications. Hydrogen is found naturally in the molecular H2 form.To exist as a liquid, H2 must be pressurized and cooled to a very low… …
27Very Large Telescope — VLT redirects here. For other uses, see VLT (disambiguation). Very Large Telescope The four Unit Telescopes that form the VLT together with th …
28computer — computerlike, adj. /keuhm pyooh teuhr/, n. 1. Also called processor. an electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations. Cf. analog… …
29SR-71 Blackbird — infobox Aircraft name = SR 71 Blackbird caption =An SR 71B Trainer over the Sierra Nevada Mountains of California in 1994. Note second cockpit is raised for the instructor. type = Strategic Reconnaissance manufacturer = Lockheed Skunk Works… …
30Brazing — This article is about the metal joining process. For the cooking technique, see braising. Brazing practice Brazing is a metal joining process whereby a filler metal is heated above and distributed between two or more close fitting parts by… …
