Aircraft engine maker Pratt & Whitney showed a video last week about the XA103 adaptive cycle engine that also pictured what might have been the F-47.

You're probably familiar with the standard combustion process that powers most cars, but some engines use a more efficient cycle that dates back to the 1800s.

Adaptive cycle engines are specially designed to alternate between efficiency and raw power—extending an aircraft’s range without compromising on speed during engagements. The modern fighter jet is ...

For more than 100 years, the internal combustion engine (ICE) has been the mechanism of choice for vehicles of all shapes and sizes. Across all configurations, the principle is the same: a mix of fuel ...

The US Air Force (USAF) has reached a significant milestone in its effort to develop a sixth-generation jet engine. The service has completed detailed design reviews of two adaptive-cycle engine ...

Most modern gasoline and diesel-powered engines found in the cars and trucks seen on today's roadways rely on the four-cycle-engine principles developed in the late 1800s by Nikolaus Otto, Gottlieb ...

When I went to school for engine repair in the 1980s, we studied the differences between two- and four-stroke engine cycles extensively. If you're not familiar with engine strokes, understanding the ...

Previous studies have shown that increase compression ratio (CR) is an effective way to improve thermal efficiency of gasoline engine without changing the mechanical structure and working cycle, ...