总结一下我们三个NASA挑战过去的几个月里,NASA GrabCAD社区举办了一个挑战,要求被试设计一种灵活的、但承载层用于微重力和欧洲杯足彩网重力。设计将被用作一个对接系统的一部分,可以阐明如何码头元素不完全一致的。
仅在过去的一年,美国航空航天局已经挑战了GrabCAD社区设计探测器,跨声速隧道、星翳,甚至为航天欧洲杯足彩网器热保护盾牌;社区没有让人失望。
我们要感谢所有参与这一挑战由中心设计和空间架构(CDSA),这是美国宇航局约翰逊航天中心的设计工作室以人为中心的设计,概念发展,载人航天架构的快速原型。CDSA团队使用草图、工程分析、CAD建模、虚拟现实和物理模型来创建选项为人类探索太阳系内部。
下面是获奖者:
美国国家航空航天局挑战胜利者
首先
SlideGrid通过nazarii.vareshchuk-1
“这简单几何图形设计特点,利用伸缩梁作为主要的机制。系统发光的对细节的关注。光束交替减少差距,有内部和外部机制来援助的梁定心和系统的可靠性。总的来说,这是一个非常好的、非常深思熟虑的设计和地板的最强的概念。它满足所有的需求,随时可用。系统出现相对舒适的使用,一般满足MGAAMA需求。整个系统似乎是健壮的。多种机制来确保该系统的可靠性和鲁棒性。基本组件出现简单的制造与数控或其他技术和系统函数多年没有船员维护干预。梁似乎是模块化的,允许他们为维护和修理被移除。 The beams themselves have internal mechanisms that appear to be serviceable. Stress analysis shows that this system should be strong enough to withstand expected loads. The folding transport configuration proposed is very beneficial for the 40x40 by 40x40 MGAAMA used by the pressurized rovers. There are a few lips and potential pinch points, but the density of the beams reduces this considerably. It is regrettable that the gaps between beams are not completely eliminated, but they are sufficiently small that they should not interfere with translation of wheeled or walking crew, robots, or equipment. Additionally, a covering would eliminate this issue as was mentioned in the text. A 'fish-scale' covering is mentioned and would benefit this design; however, it was not implemented in the final design. The gaps are held to a minimal distance, allowing only very small objects to fall through. There is a risk of objects smaller in width than 3/4 inch to fall through. The rectangular sliders may increase wear on wheels as compared with circular sliders, but the alternating orientation of these sliders minimizes the gap between sliders, thus reducing the potential for wheels to get stuck between sliders. The complexity of all the mechanisms in this system could reduce overall reliability with multiple small issues. The sliders appear resilient to damage, but if the floor assembly needs to be removed it does look like a somewhat involved process.”
第二位
灵活的地板上滑块与管道通过muhammad.fikri-28
“这种设计将影响从现有技术和转换这个用例。伸缩杆为系统提供极大的灵活性和引入了一个水平的模块化和可维护性。燃料棒似乎容易更换,如果问题出现。走在这地板会相当容易。滑块的圆形截面将走在薄底鞋或袜子更舒适比滑动条锐利的边缘。这地板概念几乎看起来舒服,如果船员可以放松坐着或者躺着在下班的时候,它看起来几乎像一个按摩器。滑块的圆形形状可以减少受伤的可能性。建设似乎相当简单,将使地板上拆卸检查,修理,等等。但是,它将恼人的必须拆卸整个结构检索项下降。最好是如果可以一次删除小滑块组,一个足够大的数量能够达到在地板下工作。设计显得很健壮和应该有很长的使用寿命。 The analysis suggests the design will be sufficient for expected loads. The slider design does result in an intermittent, decreasing radius in slider in one direction only. Thus, it is possible that wheeled objects traveling in the direction of increasing radius might have a wheel fall into the gap and become stuck as it is pushed/pulled forward. However, either a double wheel or a wheel of sufficient thickness should eliminate this risk. The gaps between the slider pipes are a definite weakness that would require mitigation before a system like this could be used, but the circular cross section of the sliders offers significant advantages that are worthy of further study. This weakness is also somewhat mitigated by the fact that the sliders are oriented in the direction of travel instead of perpendicular. This will reduce the number of "traps" that can catch wheels and other small, protruding objects. The use of round instead of rectangular sliders will also reduce potential points of discomfort when physically interacting with the sliders. Nonetheless, a means to cover the gaps in the floor would be highly desirable.”
第三位
“这是一个简单而有效的设计。值得注意的是这一概念的清晰度超过设计要求俯仰和偏航。这给多的柔韧性和拉伸地板和偏航角。横滚和俯仰角度并不明确,可能不太灵活。酒吧格栅似乎也可导致方便维护程序。设计模块化,轻松可更换组件。似乎跟这个系统高可靠性。酒吧光栅似乎可拆卸维修。这也提供了访问控制武器。所有组件出现相对简单的生产。 Most components could be fabricated via CNC machining or 3D printing, with some design tweaks in mind. Some bearings and joints would be more difficult to fabricate. The structure is simple, with few moving parts and should be very reliable for a long time. The spacing between the slats is the greatest liability of this system. This is a function of placing the slats perpendicular to the direction of travel instead of parallel. Yaw offsets cause the gaps on one side to decrease while on the other they increase. This forces more spacing between slats than if the slats are parallel to direction of travel. Changes in length also increase the spacing. The spacing between slats will make walking mildly annoying but easily manageable. But because the gaps between slats are greater than the width of the slats themselves, a wheeled device may experience difficulties rolling over the floor. The gaps in the floor are extensive and anything smaller than an inch dropped on the floor is likely to fall through. Some aspects of the construction (e.g., slat to slat attachment) may be challenging to access to disassemble for inspection or repair.”
第四位
高度灵活的MGAAMA地板设计通过paul.kyum.lee-2
“这是一个非常深思熟虑设计使用伸缩梁和灵活的顶板岩层。它给伸缩梁和轴承的灵活性但最小化的缺点与伸缩梁大差距。这是一个非常灵活,因为这个健壮的系统。覆盖在结束减少差距小物品可以删除。板条之间只有很小的差异存在,因此是不那么容易的小物品掉在地上。概念是一般功能,和覆盖层的板条显然是为了使地板更加舒适的导线比如果船员走直接在降低板条。舱壁的盖板结束也旨在减少差距和不连续性。这是有趣的和值得原型和human-in-the-loop测试方法。组件可以方便地加工,或3 d印刷。设计是由这种类型的制造。 Many of the parts are able to be made with a CNC with others being off-the-shelf. They are relatively simple structures and should have long-term reliability. Deflection analysis shows that this system will withstand the weight. The individual slats appear to be modular such that any one of them could be taken apart for maintenance or replacement. The one major downside is a lack of verification for roll maneuvers. The paper states it is capable of 20 degrees roll, however there are no illustrations to prove this. It appears that roll will introduce issues with pinch points, lips, and gaps, however there this cannot be said with certainty. Also, the apparent locations of connectors are covered by other material making access difficult. Inspection, disassembly/assembly, and repair may be a time-consuming process.”