BurnSim ($39) is a solid rocket motor ballistic simulation program (Windows only) now in its third version. In a nutshell, input your motor, nozzle and propellant characteristics and BurnSim calculates the Kn (kilonewton) through the burn and predicts estimated chamber pressure and motor performance. Once your motor design is in BurnSim, you can tweak the parameters such as nozzle diameter or grain core diameter and instantly see how the Kn, chamber pressure, and motor thrust is affected. BurnSim will also optimize your nozzle design. BurnSim 3.0 [ Read this article] [ Comment on this article]
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07-11
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这里有35例色彩明亮、生气十足的网页设计可以给你在你的下个项目里带来启发。 色彩的熟练使用是所有设计师都应该拥有的才华。当使用过度，一份设计会看起来零碎散落，“彩虹似的”，和没有中心。用得太...
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04-05
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The difference between a “messy” home theater installation and a slick, smooth-looking install has a lot to do with the integration of the speakers system.Whether outdoors, indoors, wall-mounted, in-w...
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04-12
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All of us need to get away from the daily humdrum to recharge our batteries. If ordinary mortals can make do with some time-off in a spa, guess where the world’s most powerful people should be headi...
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01-15
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If the world wants to do something about global warming then we need to change more than just how we live, we need to change what we live in. There is endemic negligence and a multiplicity of inadequa...
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03-13
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Recycling doesn’t have to be limited to helping the environment: it can also be a challenge and opportunity to ingenious designers who work with materials most people would consider waste to create am...
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04-12
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Most people would be mortified by a thought of treading too heavily on their carefully manicured lawns. But hey, a little walking never hurts, especially when undertaken for the betterment of your pri...
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04-14
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If you haven’t seen the work of Robert Harvey Oshatz, then you’re in for a huge treat, because he’s our only guest here at Offbeat today. He’s that cool. He gets the whole day. Although really he’s so...
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04-12
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There are a few who adore bottle decor more than any piece-of-art and this one is surely for those fanatics. A 750 ml frozen glass bottle of wine that has been cut into a decorative piece good enough ...
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04-20
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NMDA has proposed an interesting and unique design for a small tower in Shanghai. The proposed architecture is an example of a new approach to design, one that the entire nation would seek to emulate....
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04-22
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By Myscha Theriault Whether it’s here at the lake, elsewhere, or both, my husband and I know we want to build a home from scratch some day. We also know we want to do our ecological part when we do...
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