Controllable pitch propellers adjust blade angle instead of engine speed, letting ships change thrust, direction, and handling instantly. This explains the physics, advantages, and tradeoffs compared ...

When it comes to seaborne propulsion, one simple layout has largely dominated over all others. You pair some kind of engine ...

If diesel engines need air for combustion, then how can submarines use them? Here's what you need to know about the clever ...

Seattle has some tough decisions to make about key players, but there's plenty of money and talent to work with.

The ACT Brumbies may be without their starpower from last season, but veteran prop James Slipper believes the side can ...

After reports of a schism at the Justice Dept. and assistant attorney general Gail Slater's departure on Thursday, signs ...

Now we’re at the Super Bowl. Sam Darnold has a chance to cement himself in his history books, and it all came about because ...

Valentine’s Day can be a fun excuse to try a new sex position, but the ‘best’ one is the one that feels good for your body ...

Direct aviation is empowered by Electra’s core technology—ultra-short-takeoff-and-landing using blown lift enabled by ...

General Galactic, cofounded by a former SpaceX engineer, plans to test its water-based propellant this fall. If successful, it could help usher in a new era of space travel. That's a big “if.” ...

At the heart of the Air Force's combat search and rescue corps is its aging fleet of rescue helicopters. But as the Air Force ...