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LWDC was developed to provide an additively manufactured laser deposited closeout of the coolant channels that also forms the structural jacket in-situ.

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LWDC was developed to provide an additively manufactured laser deposited closeout of the coolant channels that also forms the structural jacket in-situ. Ongoing research is being conducted to further expand use of this process for increased scale and bimetallic or multi-alloy options. Read more Additive Manufacturing is the peer-reviewed journal that provides academia and world-leading industry with high quality research papers and reviews in additive manufacturing. This paper will describe the process development using the LWDC process for channel closeout utilizing the multi-alloys, hardware design and results from hot-fire testing on subscale multi-alloy LWDC channel cooled nozzles. Affiliated with America Makes, the National Additive Manufacturing Innovation Institute Additive Manufacturing is the peer-reviewed journal that provides academia and world-leading industry with high quality research papers and reviews in additive manufacturing. The journal aims to acknowledge the innovative nature of additive manufacturing and its broad applications to outline the current and future developments in the field. The journal covers a wide scope, comprising new technologies, processes, methods, materials, systems, and applications in the field of additive manufacturing. The hot-fire test articles were fabricated using monolithic alloys to simplify the fabrication process. One of the primary methods being advanced is Laser Wire Direct The fabrication process was further advanced by using a multi-alloy axial joint using explosive bonding integrating a copper-alloy at the forward end of the nozzle hotwall and a stainless-alloy for the remaining length. A third alloy was then used for the channel closeout using the LWDC process. From this, there was a need to create a fast-publication journal which provides a unique publication outlet for engineers, materials scientists and practitioners in academia and virtually any industry as these technologies are incorporated in new product and medical implant design and manufacturing.

Read more Additive Manufacturing is the peer-reviewed journal that provides academia and world-leading industry with high quality research papers and reviews in additive manufacturing. This paper will describe the process development using the LWDC process for channel closeout utilizing the multi-alloys, hardware design and results from hot-fire testing on subscale multi-alloy LWDC channel cooled nozzles.

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The use of multi-alloys is desired to fully optimize the combination of materials in the radial and axial directions to reduce overall weight of the nozzle and allow for higher thermal and structural margins on the channel wall nozzle. One of the primary methods being advanced is Laser Wire Direct The hot-fire test articles were fabricated using monolithic alloys to simplify the fabrication process.

Affiliated with America Makes, the National Additive Manufacturing Innovation Institute Additive Manufacturing is the peer-reviewed journal that provides academia and world-leading industry with high quality research papers and reviews in additive manufacturing.

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Bimetallic Channel Wall Nozzle Development and Hot-fire Testing using Additively Manufactured Laser Wire Direct Closeout Technology NASA has been developing and advancing regeneratively-cooled channel wall nozzle technology for liquid rocket engines to reduce cost and schedules associated with fabrication.

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Additive Manufacturing Research Papers