Fuel consumption and greenhouse gas emissions are huge priorities in the aviation industry – passenger airliners chew through amazing quantities of fuel. Take the Boeing 747, which guzzles somewhere ...

aircraft, part of the Autonomous Formation Flight (AFF) project based at NASA’s Dryden Flight Research Center, Edwards, Calif., flew the mission in early December. During the 96-minute flight, the ...

The dynamics of rotor wakes and the behaviour of tip vortices have emerged as critical areas of investigation in rotorcraft aerodynamics. These phenomena underpin not only the performance and ...

Many aircraft wings have their tips turned up to reduce turbulence. I have not observed the same on wind-turbine blades – do they not experience the same problem? • The upturned tips on aircraft wings ...