Chinese scientists claim to have successfully tested what they describe as the world’s first underwater boron-fuelled ramjet ...

China has tested a powerful engine that can carry weapons at remarkable speeds through both air and water. The novel engine achieved 90% efficiency in laboratory tests, which were conducted in ...

After years of testing and more than 450 trials, the United States has taken a major step forward in artillery technology with the Ramjet 155. Developed by Boeing and Nammo, this shell uses an air ...

Artillery has been for a very long time one of the best ways to fight the enemy from very far away. The ability to strike from a safe distance is a godsend for soldiers, as it gives them the ability ...

GE Aerospace says it successfully demonstrated an advanced jet propulsion concept that involves a dual-mode ramjet design utilizing rotating detonation combustion. This could offer a pathway to the ...

American aircraft engine startup Astro Mechanica announced the fifth-generation of the DUality propulsion unit will use ...

DeltaV Space Technologies develops propulsion systems for satellites of different scales, liquid fuel engines for orbit transfers, while working on ramjet system to boost cruise missiles and aircraft ...

Man sentenced for trying to meet teen girl in Cincinnati with a box of condoms A suburban Columbus man was sentenced to time in a federal prison for traveling to Cincinnati to meet what he thought was ...

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TL;DR: A hypersonic dual-mode ramjet engine is a high-speed air-breathing jet engine capable of operating efficiently at both lower and extremely high Mach speeds by utilizing dual combustion modes.

The ramjet needs to be moving at high speeds in order for the compression wave to build up and start the engine cycle. That means it has to be accelerated by means of a booster rocket or dropping it ...