Counter-rotating wind turbines (CRWTs) represent an innovative paradigm in wind energy conversion, employing a dual rotor mechanism in which two coaxial rotors spin in opposite directions. This ...

Then Stian had the counter-rotating concept, and that's where it matched up. An integrated turbine where the generator is part of the solution, not part of the problem. Hans: Tilting, floating ...

U.S. Marine launches a RQ-20B PUMA, a small, unmanned aircraft system, during Keris Marine Exercise 2023 as part of MRF-SEA at Piabung Training Area in Sukabumi, West Java, Indonesia, Dec. 6, 2023. (U ...

Here’s What You Need To Remember: The new aircraft will employ several measures designed to make it quieter, including, most notably, a counter-rotating rotor that muffles the sound of the first. The ...

GE Aviation and NASA will run a wind tunnel test program over the northern summer to evaluate and test counter-rotating fan-blade systems for open-rotor jet engine designs. The newly improved rig for ...

Safran Aircraft Engines now has clearly plotted the technological trajectory a counter-rotating open-rotor (CROR) engine can be part of, somewhere between an ultra-high-bypass-ratio (UHBR) turbofan ...

Performance motorcycles seem to get more powerful by the day, even as emission norms grow stricter and stricter. The original powerhouse, the BMW S1000RR, manages 213PS even in Euro5 guise, while the ...