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Future of Cars: Hydrogen Fuel Cells, Or Electric?

thor4217 Hydrogen scales better (659 comments)

Both hydrogen and electricity COULD be produced from entirely renewable sources, although in the interim the hydrogen will come from natural gas (steam methane reforming), just like the electricity. The difference is that hydrogen fuel cells scale better to larger vehicles, pickups, heavy duty trucks, etc. A battery electric long haul big rig doesn't make any sense because the batteries just get too heavy.

about 7 months ago
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Interviews: Ask Former Director of JPL Edward Stone About Space Exploration

thor4217 Next mission? (58 comments)

If you could choose one robotic exploration mission that is not currently in the works, what would it be and why?

about 7 months ago
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Interviews: Ask Former Director of JPL Edward Stone About Space Exploration

thor4217 Role of human spaceflight (58 comments)

As a national leader in robotic exploration of the solar system, what do you think is the role of human spaceflight in the future? Should NASA be developing a human mission to the Moon, Mars, Europa, and beyond? How should the NASA balance the needs of good science and cost/safety issues versus the romance of human exploration?

about 7 months ago
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Best OSS CFD Package For High School Physics?

thor4217 Maximize the learning experience (105 comments)

Perhaps a good question is- will running CFD be a learning experience for your students? Will they just be blinding clicking options without getting much out of it? Perhaps they could interact with a CFD solution that you ran instead. They could still do a comparison to experimental results. I have found that simpler 2-D or other approximate codes offer better learning experiences that full-up CFD because changing options, creating geometry and viewing results is much simpler. Check out XFOIL and maybe ASWING: http://web.mit.edu/drela/Public/web/xfoil/ http://web.mit.edu/drela/Public/web/aswing/

more than 3 years ago

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