Scientists have uncovered a new explanation for how swimming bacteria change direction, providing fresh insight into one of ...

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 ...

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both ...

Back in 2009, a friend bet British cyclist Paul Spencer that he couldn't ride his bike the length of the British Isles in less than a week. Spencer took up the challenge, and completed the route – ...

Abstract: The counter-rotating axial-flux hybrid-excitation permanent magnet (PM) machine is a novel power device specifically designed for counter-rotating propeller (CRP) systems. Cogging torque (CT ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The Convair XFY-1 Pogo is one of many ...

Turkish intelligence has captured a senior operative of the Islamic State Khorasan (IS-K) group during a covert operation along the Pak-Afghan border, Turkish officials said on Monday, describing the ...

Abstract: In this article, a stator-PM counter-rotating dual-rotor high-speed flywheel electrical machine (SPMCRDR-HSEM) equipped with flux-intensifying permanent magnet (IPM) and split fault-tolerant ...

These Q&As cover recent questions about an SDR allocation. For additional background and basic facts please refer to the SDR factsheet. A direct benefit of a general SDR allocation, and indeed the ...