News tagged with propeller

First journey for Alphabus spacecraft

(PhysOrg.com) -- The service module of the new Alphabus generation of telecommunication satellites has completed its first journey ? from Cannes to Toulouse, in France. The three-day trip was completed ...

Feb 05, 2010
5 / 5 (2) 0

Powering cube satellites

Right now, 10 to 15 Rubik's Cube-sized satellites are orbiting high above Earth. Known as cube satellites, or "CubeSats," the devices help researchers conduct simple space observations and measure characteristics ...

Feb 03, 2010
3.9 / 5 (13) 11

On the Crest of Wave Energy

(PhysOrg.com) -- The 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 the ...

Nov 19, 2009
3.5 / 5 (4) 0