Clean Energy's second demo truck program will allow trucking fleets to try out the Cummins X15N natural gas engine in their own operations. Clean Energy’s demo truck program will give heavy-duty ...
Northrop Grumman test-fired a solid rocket motor called SMASH!22 Dec. 4 as part of its SMART Demo development program. Credit: Northrop Grumman WASHINGTON — Northrop Grumman tested a solid rocket ...
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