Unless you drive a Wankel rotary, your combustion engine vehicle has pistons, and each of those pistons has three rings. Why ...

Flame of a jet-stabilised combustion chamber system in the HBK-S high-pressure combustion chamber test rig Even under the changed framework conditions of the energy transition, combustion remains an ...

HOT ROD’s archives are chock-full of brilliant tech reports that truly are timeless. This one, drafted by Jim McFarland for our February 1972 issue, provides an extensive look at how important airflow ...

The demands placed on modern aircraft engines are high. They need to be powerful. And efficient. And, of course, as low in emissions as possible. To master this balancing act, Rolls-Royce is driving ...

These tests were conducted jointly by ArianeGroup and DLR and follow on from the hot fire test campaign carried out last year, which validated 14 technological building blocks for future liquid ...

You've seen the evidence. You disassemble an engine and witness the appearance of deposits—or their absence—on piston crowns and combustion chambers in the cylinder heads. You can relate the presence, ...

However, not all innovations are equal, and nor do they follow a constant upward trend. Instead, their evolution takes the form of an S-shaped curve that reflects their typical lifecycle from early ...

At the end of their lives, most satellites fall to their death. Many of the smaller ones, including most of those going up as part of the "mega-constellations" currently under construction, are ...

Inlet unstart is a particularly critical issue associated with scramjets. That is the upstream displacement or disgorging of the original inlet shock system. Large flow spillage can be caused by the ...