A Norwegian start-up is hoping its small electric-powered ducted-fan engine for unmanned air vehicles (UAVs) can spearhead a move up the weight class into commercial aviation applications.

Of all the issues street rodders are concerned with engine operating temperature is always at or near the top of the list. Little radiators with big engines, lots of horsepower and lousy air flow, air ...

General Electric designed this proof-of-concept turboprop “unducted fan” engine as part of NASA’s Advanced Turboprop Project, which was aimed at overcoming the three-fold increase in fuel prices ...

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Engine makers are quick to note that their newest turbofans are significantly more efficient than those they replace. Perhaps so, but the old adage “What have you done for me lately?” still rings true ...

Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of ...