ramjet

noun
ram·​jet | \ ˈram-ˌjet How to pronounce ramjet (audio) \

Definition of ramjet

: a jet engine that consists essentially of a hollow tube without mechanical components and depends on the aircraft's speed of flight to compress the air which is supplied to a burner from which hot gases are discharged rearward

Examples of ramjet in a Sentence

Recent Examples on the Web Hermeus’s combined cycle engine can work like a regular turbofan or ramjet engine, reaching a speed of Mach 5. Kyle Mizokami, Popular Mechanics, "The Engine That Will Make Air Force One Hypersonic," 7 Aug. 2020 Shockwaves rapidly mix fluid streams, which is a requirement for a supersonic-air ramjet. Caroline Delbert, Popular Mechanics, "If We Mix Jet Fuel Using Shockwaves, We Can Get to Mars Faster," 4 Aug. 2020 At high supersonic and low subsonic speeds, the air ingested by an engine gradually increases in temperature, and this hot air makes a ramjet engine less efficient. Kyle Mizokami, Popular Mechanics, "The Engine That Will Make Air Force One Hypersonic," 7 Aug. 2020 Then there's the matter of a ramjet's air temperature. Kyle Mizokami, Popular Mechanics, "The Engine That Will Make Air Force One Hypersonic," 7 Aug. 2020 Capable of being launched from a fighter jet or bomber, it would be powered by a supersonic combustion ramjet, or scramjet, enabling the missile to fly and maneuver at lower altitudes. Robert Burns, The Christian Science Monitor, "More security? US vs. China in 'super-duper' missiles race," 20 May 2020 Missiles and artillery shells are on the cusp of a major breakthrough, thanks to research into ramjet engine technology. Kyle Mizokami, Popular Mechanics, "Ramjets Will Drastically Improve Missiles and Artillery Shells," 17 Oct. 2019 In September, Defense News reported Nammo plans to retrofit the ESSM with a ramjet. Kyle Mizokami, Popular Mechanics, "Ramjets Will Drastically Improve Missiles and Artillery Shells," 17 Oct. 2019 Here’s why: This kind of projectile uses what’s known as a ramjet engine. Alex Ward, Vox, "What caused Russia’s radioactive explosion last week? Possibly a nuclear-powered missile.," 13 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ramjet.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ramjet

1942, in the meaning defined above

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The first known use of ramjet was in 1942

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Last Updated

4 Oct 2020

Cite this Entry

“Ramjet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ramjet. Accessed 26 Nov. 2020.

More from Merriam-Webster on ramjet

Britannica.com: Encyclopedia article about ramjet

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