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

The story of the P-75 Eagle, a World War II fighter built from mixed components that never matched the performance of the P-51 or P-47.

Aquamaster-Rauma of Finland has secured an order for eight 3,000-kW Contaz propulsors, to be fitted to a pair of train/car ferries recently ordered by DSB Rederi AS in Denmark. The order is viewed as ...

When you're at an airport and see propeller aircraft, you likely think it is powered by a piston engine. This is usually true among smaller planes, like the Cessa 172 Skyhawk and the Piper Archer, or ...

A major VLCC newbuilding program is foreseen by market analysts who estimate that as many as 300 ships of this size must be replaced up to the end of the decade and into the next century. It should be ...

Whether you're looking to cruise, catch a wave or a fish, relax or perform crazy tricks these six boats have you covered. The post Explore Six Top Boats for Boating Adventures appeared first on ...

The Flying Pancake (at Floyd Bennett Field, New York, in the early 1940s). Rudy Arnold Photo Collection, NASM, SI 2009-1152 The two propeller shaft fairings emerging on either side of the round ...

The European Union is a political and economic union between 27 countries that covers more than four million square kilometres. The EU spans countries with more than 508 million citizens and the euro ...

Russia appears to have fielded a new jet-powered attack drone, the Geran-5, which blurs the line between loitering munitions and cruise missiles. First identified from wreckage recovered near Kyiv and ...