New images recently emerged raise the possibility that China has built another compound helicopter demonstrator, following the S-97 Raider clone seen in 2025, this time with a resemblance to the ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Between 1955 and 1958, the Air Force ...

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When it comes to seaborne propulsion, one simple layout has largely dominated over all others. You pair some kind of engine with some kind of basic propeller at the back of the ship, and then you ...

Correspondence to Dr Dylan Morrissey, Centre for Sports and Exercise Medicine, William Harvey Research Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of ...

Add Yahoo as a preferred source to see more of our stories on Google. TU 95 GettyImages 1139948302 USAF Interim Archives Getty Images NATO air planners looking east during the Cold War faced a vast, ...

Schottel maintains 75-year heritage Celebrations to mark the 75th anniversary of German propulsion specialist Schottel, culminating in a spectacular fireworks display on the River Rhine, incorporated ...

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 ...

Abstract: High-temperature superconducting distributed windings in fully superconducting rotating machines offer lower AC losses, less higher harmonics, and higher power density but face challenges in ...