Compasses, maps, marine chronometers and the ... steps of a four-stroke internal combustion engine. The strokes are as follows: 1) Intake stroke — air and vaporised fuel are drawn in.

This week on Weapons and Warfare, Ryan Robertson explores the U.S. Navy's use of Boeing's Extra Large Unmanned Underwater ...

The question increasingly dominating dinner tables, barstools, sheriff’s departments, and government offices: Just what the heck is flying around up there?

The system replaces a cumbersome legacy platform Marines have long used to defend the skies: The Man-Portable Air Defense ...

WinGD hit a milestone with its X-DF-M methanol-fuelled engine design, running the first commercial engine at full load on more than 95% methanol fuel. The 10-cylinder, 92-bore 10X92DF-M engine was run ...

Los Angeles-based startup Equatic's ocean-based carbon removal system not only captures carbon but also produces green ...

The US Navy (USN) awarded Northrop Grumman a USD3.4 billion engineering and manufacturing development (EMD) contract to ...

The engines are installed in 25-knot, super-wide, trans-Pacific containerships owned by the Hyundai Merchant Marine, for which ... and starting air timing. Hydraulic actuators will eventually ...

The Navy has completed a congressionally directed testing milestone in its development of unmanned surface vessels, successfully demonstrating 720 hours -- 30 days -- of continuous USV engine ...

Read about the 720-hour engine test to evaluate the reliability of a model engine for future use aboard unmanned surface ...

Rolls-Royce has announced that its new F130 engine has successfully passed the Critical Design Review (CDR) phase, ...

The F130 engines, which will extend B-52s' lives for decades, are a crucial part of the Air Force's effort to switch to a two ...