News articles tagged with 'propeller'
Getting bubbles out of fuel pumps
— 17 Nov 2010 10:03 | PhysicsFor more than 250 years, researchers have known that under certain conditions vapour bubbles can form in fluids moving swiftly over a surface. These bubbles soon collapse with such…
Aircraft cause precipitation, hole-punch clouds
— 15 Jun 2010 02:26 | EnvironmentAs turboprop and jet aircraft climb or descend under certain atmospheric conditions, they can inadvertently seed mid-level clouds and cause narrow bands of snow or rain to develop and…
Caltech researchers find schooling fish offer new ideas for wind farming
— 18 May 2010 20:12 | TechnologyThe quest to derive energy from wind may soon be getting some help from California Institute of Technology (Caltech) fluid-dynamics expert John Dabiri - and a school of fish…
On the crest of wave energy
— 21 Nov 2009 13:11 | TechnologyThe ocean is a potentially vast source of electric power, yet as engineers test new technologies for capturing it, the devices are plagued by battering storms, limited efficiency, and…
Aeroacoustics study helps control noise from unmanned aerial vehicles
— 23 Jan 2009 21:36 | TechnologyUnmanned aerial vehicles (UAVs) are playing increasingly important roles in many fields. Ranging in size from the huge Global Hawk aircraft to hand-held machines, these remotely controlled…
Want to fly? Don't copy the birds and the bees
— 6 Jul 2008 18:29 | BiologySince earliest recorded history, and presumably beyond, humans have always wanted to fly. First attempts involved imitation of winged creatures around them, and unfailingly ended in…
Wind turbines produce green energy and airflow mysteries
— 11 Dec 2007 20:56 | EnvironmentUsing smoke, laser light, model airplane propellers and a campus wind tunnel, a team led by Johns Hopkins University researchers is trying to solve the airflow mysteries that surround…
First known belt of moonlets in the rings of Saturn
— 24 Oct 2007 21:08 | AstronomyA narrow belt harbouring moonlets as large as football stadiums discovered in Saturn's outermost ring probably resulted when a larger moon was shattered by a wayward asteroid or comet…
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