rocket jetn.

1868 Brit. Patent 2680 (1869) 5 Gas at a high temperature and pressure..issues from the rocket jets, which when of a conical form convert it into a conical sheet, then mixing with the atmospheric air it is ignited by an electric spark.

1879 R. T. Pritchett Gamle Norge: Rambles & Scrambles in Norway v. 97 The streams shot forth some of the rocket jets, losing themselves for a time, and then collecting with renewed energy for the final dash into the fjord.

1893 G. Brewer & P. Y. Alexander Aëronautics 50 [Reporting the patent cited in quot. 1868.] The propulsion is obtained by rocket jets, i.e. jets impinging on the atmosphere, which jets are produced by the combustion of gaseous hydrocarbons mixed with atmospheric air.

1919 Monthly Bull. Hawaiian Volcano Observatory 7 141/1 In the early evening explosive rocket jets from one of the vents threw out some blocks which were like heavy aa.

1935 Pop. Sci. Monthly Jan. 27/2 A steady and self-contained driving force without recourse to propellors, rocket jets, or any other familiar means of propulsion.

1944 Aviation Jan. 149/3 The mass of a rocket jet can be readily varied by feeding more or less fuel..into the rocket motor.

1953 Pop. Sci. Mar. 162/1 So that Mars' gravity can take effect, rocket jets brake its orbital speed, and then the rocket motor is jettisoned.

1967 Pop. Mech. Mar. 120 Karts with rocket jets are good for another 30 mph before ‘lifting off’.

2001 P. F. Hamilton Fallen Dragon (2003) ix. 309 The muted roar of the rocket jets drumming against the badly stained fuselage.