The U.S. Air Force has locked in its next move to keep the venerable B-52 bomber flying well into midcentury, awarding Boeing ...

The MarketWatch News Department was not involved in the creation of this content. Washington, D.C., Nov. 07, 2025 (GLOBE NEWSWIRE) -- Internal combustion engines will continue to be the prime power ...

The new contract covers the Post-Critical Design Review phase of the B-52 Commercial Engine Replacement Program, which will ...

Engine manufacturer Pratt & Whitney will use new digital design technology to accelerate its work on the XA103, its submission for the U.S. Air Force’s Next Generation Adaptive Propulsion (NGAP) ...

Although reminiscent of the official F-47 renderings, the model in RTX’s video is actually based on a notional design by artist Rodrigo Avella. A new promotional video released by RTX, parent company ...

Variable cycle engine design embodies a transformative approach in aero‐propulsion, enabling engines to adapt their thermodynamic cycle to meet diverse operational demands, from fuel efficiency to ...

The problem with that design is that it means lubrication cannot be added below the cylinder, as that is now a pre-combustion intake chamber. And in order for the compression stroke to work as the ...

OHV stands for overhead valve, and these types of powerplants can also be called pushrod engines. OHV engines have the intake and exhaust valves located above the camshaft, which is in the engine ...