ramjet
noun
ram·jet ˈram-ˌjet 
: 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
Example Sentences
Recent Examples on the Web Unlike conventional artillery, the new shell uses a ramjet engine to fly farther and faster. 
Kyle Mizokami, Popular Mechanics, 12 Aug. 2022 Multiple companies are working on engines that combine a jet and ramjet, or a jet and a rocket. Manasee Wagh, Popular Mechanics, 15 Apr. 2022 Enlarge / Simple ramjet operation, with Mach numbers of flow shown. Jennifer Ouellette, Ars Technica, 6 Jan. 2022 At high-speed, the engine works like a ramjet, ramming increased amounts of air through the engine chamber to create much, much more thrust. Kyle Mizokami, Popular Mechanics, 13 Sep. 2021 Such systems use a standard jet engine for launch and landing and to build enough speed in flight to feed air into a second turbine—known as a ramjet or scramjet—which produces more power, but requires high-speed air flow in order to ignite. J. George Gorant, Robb Report, 19 Aug. 2021 These have descended from the idea of the turbojet, and on the family tree of jet propulsion, the turbojet and ramjet are something like cousins. Caroline Delbert, Popular Mechanics, 2 Dec. 2020 The ramjet led to the scramjet, which was designed to go as much as 15 times the speed of sound. Caroline Delbert, Popular Mechanics, 2 Dec. 2020 Its unique trick involved the ability to transition from turbojet engine to turbo-ramjet engine in flight, sucking in vast amounts of oxygen-rich air and burning it to drastically increase engine output. Kyle Mizokami, Popular Mechanics, 10 Mar. 2021 See More
Kyle Mizokami, Popular Mechanics, 12 Aug. 2022 Multiple companies are working on engines that combine a jet and ramjet, or a jet and a rocket. Manasee Wagh, Popular Mechanics, 15 Apr. 2022 Enlarge / Simple ramjet operation, with Mach numbers of flow shown. Jennifer Ouellette, Ars Technica, 6 Jan. 2022 At high-speed, the engine works like a ramjet, ramming increased amounts of air through the engine chamber to create much, much more thrust. Kyle Mizokami, Popular Mechanics, 13 Sep. 2021 Such systems use a standard jet engine for launch and landing and to build enough speed in flight to feed air into a second turbine—known as a ramjet or scramjet—which produces more power, but requires high-speed air flow in order to ignite. J. George Gorant, Robb Report, 19 Aug. 2021 These have descended from the idea of the turbojet, and on the family tree of jet propulsion, the turbojet and ramjet are something like cousins. Caroline Delbert, Popular Mechanics, 2 Dec. 2020 The ramjet led to the scramjet, which was designed to go as much as 15 times the speed of sound. Caroline Delbert, Popular Mechanics, 2 Dec. 2020 Its unique trick involved the ability to transition from turbojet engine to turbo-ramjet engine in flight, sucking in vast amounts of oxygen-rich air and burning it to drastically increase engine output. Kyle Mizokami, Popular Mechanics, 10 Mar. 2021 See More Word History
First Known Use
1942, in the meaning defined above