Robert Allan Ltd. is has announced the signing of a new contract in November 2025 for the design of a TundRA 3100 icebreaking ...

Researchers at SINTEF have now designed and built new measuring equipment for testing contra-rotating propellers, which are propellers that rotate in opposite directions. This could be good news for ...

During World War II, Daimler-Benz explored an unconventional fighter concept built around a massive experimental V16 engine. Instead of placing the propeller at the nose or tail, the design mounted ...

Add Yahoo as a preferred source to see more of our stories on Google. 0 GettyImages 3401220 Keystone Getty Images 2 These are the coolest ‘60s airliners as voted for by readers of the Hush-Kit ...

In the 1930s, Italy set out to reclaim national prestige through speed. The Macchi Castoldi MC72 seaplane, powered by a massive V24 engine and contra rotating propellers, shattered world records ...

SINTEF has now designed and manufactured new measuring equipment for model testing of contra-rotating propellers. This could be good news for many large ships. “We see that propulsion efficiency ...

To meet the demands of fully electric and hybrid propulsion, manufacturers are developing podded, transverse and azimuthing thrusters with permanent magnet motors An increasing use of energy storage ...

Abstract: A contra-rotating propeller (CRP) offers higher propulsion efficiency compared to a single propeller. This paper presents a novel underwater CRP propulsion system that integrates a permanent ...

There have been published papers by the Air Force Research Lab and NASA on rotating detonation engines having 10% or more efficiency gains. A rotating detonation engine (RDE) uses a form of pressure ...

On May 14, 2025 Venus Aerospace became the first in the world to successfully fly a high-thrust rotating detonation rocket engine (RDRE) — achieving what no government or private entity had done ...