2018年1月26日 · Long story short, I'm ankle-deep in designing a gigantic 300mm 25kw-capable electric ducted fan system for human propulsion. The fan will be ~300mm in diameter, and the power system alone will weigh well over 12lb, so I thought Large EDF Jets might be a good fit.

2016年7月8日 · Hello all- I've spent the last several days searching for a large EDF in the 20kg static thrust range, but keep coming up with nothing but one-offs that are not available, and the …

Electronic Ducted Fan (EDF) Power Systems EDF Power Systems are a complete drop in solution for your RC jet. Each power system includes EDF housing, fan and pre-installed brushless motor. Use the filter menu on the left to narrow your search results or browse EDF Power Systems below.

We feature great deals on electric airplanes as well as a huge selection of electric ducted fan (EDF) jets, EDF units, brushless motors, servos, glues, electronic speed controls, decals, …

2018年3月5日 · Unfortunately the critical dimensions of the blade root is still unpredictable at best. From CAD to 3D printing, sanding, painting, coating with release, and two layups, it's been a …

2011年5月6日 · The best thrust I've been able to find is with the Aeronaut turbofan 8000. Like the Schuebeler also made in Germany. It's $479 US at http://www.icare-rc.com/edf.htm claim is 26lbs of thrust from 145mm edf. I think that we're looking …

性价比极高的一支定焦镜头，很多人说这个镜头解析力不高，锐度不高，但大家想想，300MM的焦距，手持拍摄，能拍清晰就已经很好了，而我平常用作拍风光时，加上反光板预升和遥控快门，没感觉到有半点不锐的，特别是边角位置，比变焦镜头好太多了。 而暗角和色差控制也比变焦镜更好。 色彩的鲜活性更是什么小白兔没得比的。 使用这些有一定分量的定焦头，建议还是用1系列的机身，毕竟对焦驱动的电流高很多，能更顺畅地驱动相对较大的对焦镜组，5系列的机身，就那 …

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300Mm 12-Blade Edf Ducted Fan Industrial Fan Blade

2012年6月1日 · 佳能EF 300mm f/2.8L IS USM镜头为13组17片设计，配备了USM超声波马达以及IS光学防抖系统，可以降低快门速度仍能获得锐利影像。 该镜头最近对焦距离为2.5m，对角线视角为6度50分，最大放大倍率为0.13倍，适合拍摄一些远处的景物，并能够得到锐利的图像，是专业摄影师经常使用的一支镜头。 佳能EF 300mm f/2.8L IS USM镜头手感不错，并且在镜身上还具备有距离窗，方便使用者把握对焦距离。 该镜头的直径为128mm，镜头长度252mm，重量约 …