单词 | pressure jet |
释义 | pressure jetn. 1. attributive. Designating a type of oil burner in which the fuel is burned at a nozzle from which it is ejected under pressure as fine droplets. ΘΚΠ the world > matter > properties of materials > temperature > heat > heating or making hot > [noun] > heating of building > specific system of radiant heating1825 central heating1871 baseboard heating1908 pressure jet1910 space heating1930 ondol1935 gas firing1961 storage heating1961 microbore1968 the world > matter > properties of materials > temperature > heat > heating or making hot > that which or one who heats > [noun] > a device for heating or warming > device in which oil burned to produce heat oil burner1860 pressure jet1910 1898 Lima (Ohio) Daily News 4 Mar. The French military authorities have not published any particulars regarding the lamp, but it appears to be a high pressure jet, by which oil is ignited in the form of spray.] 1910 Times 19 Oct. 15/1 (advt.) Air jet, steam jet, pressure jet systems, and all appliances connected with the burning of liquid fuel. 1920 E. C. Bowden-Smith Oil Firing for Kitchen Ranges iv. 90 In the pressure-jet burner great care must be taken to maintain a high temperature, or the burner may fail entirely. 1968 J. Slome Domest. Oil-fired Central Heating iii. 61 Pressure jet burners can make quite a considerable amount of noise. 1993 Collins Compl. DIY Man. (new ed.) ix. 406/3 Since pressure-jet boilers are noisy, they are best housed in an outbuilding; vaporizing boilers are much quieter. 2. A small jet engine mounted at the tip of a helicopter rotor blade and supplied with compressed air through a duct in the blade. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > rotary wing aircraft > [noun] > parts of rotary wing aircraft > rotor > small jet engine at tip of blade pressure jet1950 1950 Jrnl. Helicopter Assoc. Great Brit. 3 153 The pressure jet helicopter is..suitable for longer ranges. 1958 P. M. Lambermont & A. Pirie Helicopters & Autogyros 201 The XV-1 has a reciprocating engine..which acts by feeding air through tubes to small pressure jets at the tips of the three-bladed rotor during vertical flight. 1987 Aviation Week (Nexis) 19 Jan. 122 Merrill M. Keller has designed a helicopter based on a pressure jet rotor system that differs from other pressure jet systems designed in the U.S. and Europe. This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022). < n.1910 |
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