The mind-bending world of birotary engines - a hybrid of piston and rotary technology that could revolutionize aviation. But ...

September 15, 2004There is no other motor as efficient as the Di Pietro Rotary Air Engine. It is 100% more efficient than any other air powered engine built to date and its high torque makes it the ...

The valves, which can move from fully-open to fully-closed in as little as 30 msec, reportedly can fit in a fraction of the package space ordinarily needed for comparably-rated valves using a linear ...

Operating companies continually seek new technologies to drill laterals and extended reach wells further, more efficiently and at lower cost. Even with higher oil and gas prices, the challenge to ...

Every few weeks I receive word at the office that some tinkering genius has revolutionized the internal-combustion engine. These notices arrive on pages still smelling of Damascus lightning, and ...

If Mazda wants to build one, it can. The automaker has applied for and been granted a patent for a rotary hybrid sports car. The basic design is similar to others we’ve seen applied for in the past, ...

Here is an interesting design concept from designer Mark Miller, the Touchscreen Rotary Phone. The Touchscreen Rotary Phone merges an old design with new technology to bring us this stunning concept ...

What makes rotary ball splines ideal for dual motion How preload influences spline performance Why groove shape and ball contact matter The pros and cons of crossed-roller vs. angular-contact bearings ...

A group of students from the Copenhagen Institute of Interaction Design have used a vintage telephone to create a screen-free experience of the internet. Designed to make the "intangible processes of ...

Attempts to combine the vertical take-off and landing (VTOL) capabilities of a helicopter with the high-speed flight and long range capabilities of a fixed-wing aircraft have been tackled in a number ...