Portal’s heat exchanger thruster, known as Flare, fires up during a test in a vacuum chamber. (Portal Space Systems Photo) Bothell, Wash.-based Portal Space Systems says it has successfully tested its ...
Morning Overview on MSN
New Stirling engine makes steady power by radiating heat to space
Engineers have built a modern Stirling engine that quietly turns the cold of outer space into steady mechanical power, using the night sky as a heat sink instead of a fuel tank. By radiating heat away ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results