这European Space Agency（ESA）已经完成了第一次进行全尺度的热火测试，即3D打印的火箭发动机演示者Berta（Biergoler Raumttransportaengine/Biergoler Space Transper Drive）。开火德国航空航天中心(DLR) in Lampoldshausen, the additive manufacturing process used to produce this engine is part of the development pipeline of theAriane 6发射车 - 一个价值36亿欧元（40亿美元）的项目。
DLR空间管理项目经理LysanPfützenreuter，comments，“添雷电竞充值加剂制造为欧洲制造发动机打开了新的方式，”
“该技术的成功演示是提高欧洲发射器系统竞争力的重要一步。”
3D印刷火箭发动机
作为此类复杂零件的一种相对成本效益的生产方法，增材制造业是在航空航天行业的研发工作中广泛使用。雷电竞充值这在使用可存储液体推进剂的发动机的开发中尤其明显，例如liquid oxygen (LOX) methane，可以重复使用，并且比需要点火系统的内容要简单得多。Launcher’s E-2is one example of a 3D printed LOX engine, which made headlines last week for its record-breaking single-piece attempt. TheOrbex Prime engineis another, which was produced in collaboration with SLM Solutions.
这BERTA engine, developed byArianegroupat ESA, was produced using selective laser melting (SLM), from a nickel-based alloy (for the injection head) and stainless steel (the combustion chamber). A demonstration at present, this engine is a step toward the agency’s ultimate goal of producing 3D printed engines that can propel rockets to the moon (384,000 km above Earth) and beyond.
欧洲第一
贝尔塔3 d印刷的优点之一,是the engineers’ ability to add more complex cooling channels to the engine’s interior. Eventually, this integration will lead to more compact engines, a positive for material economy. In the first test of a month-long series on the BERTA, DLR engineers successfully fired the engine for 560 seconds, at a reference thrust of 2.45 kN (550.78 lbf). Gerd Brümmer, DLR engineer and head of BERTA Test Stand P8, comments, “The aim of the current tests is to investigate the flow behaviour and heat transfer of printed surfaces.”
In addition, Brümmer says:
“This new technology can currently only be tested at Test Stand P8 in Lampoldshausen, Europe-wide.”
Remaining competitive in aerospace
Berta的持续测试是2003年首次启动的ESA未来发射器预备计划（FLPP）的一部分，“以应对欧洲未来的机构需求，并继续处于空间新发展的最前沿。”现在，在第3期中，FLPP正在寻求“新的经济机会”，以削减大陆航空系统的市场时间和价格。该机构还正在开发其他添加剂制造流程，用于在较大的发动机示威者中应用。雷电竞充值
In relation to the BERTA’s first firing Wenzel Schoroth, propulsion engineer at ESA, comments, “3D printing and qualifying parts for hot-firing and ultimately flight is a challenge, especially when dealing with fine, complicated structures, like the cooling channels of our demonstrator.”
“这项热火测试是一种证明我们流程有效性的方式，并更多地了解了添加性生产的火箭发动机中的流动现象。”
Nominate ESA for Aerospace Application of the Year in the2019 3D Printing Industry Awards。For regular additive manufacturing aerospace news updates subscribe to our通讯, follow us onTwitter和我们一样Facebook。Visit3D Printing Jobs对于您所在地区的雷电竞充值新增材制造机会。
特色图显示了Berta推力室演示者。通过DLR的照片
