A method is taught for the joining of a plurality of heat exchange tubes having a predetermined shape, such as a 'Mae West' form, so as to obtain a tube bundle comprising a rocket engine thrust chamber. These tubes are joined to each other by laser powder injection welding, so as to close any gaps between adjacent tubes, and to securely bond the tubes together. A structural jacket is then affixed to the tube bundle, either in situ, by continuing to laser powder injection coat the surface, using an appropriate jacket composition, flame spraying or plasma spraying a suitable alloy in place, or by brazing or welding a previously formed jacket in place. In an extension of the invention, laser powder injection is performed to provide a repair method for the tube bundle, should the bundle be damaged or exhibit imperfect joining.
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机译：教导了一种用于连接具有预定形状（例如“ Mae West”形式）的多个热交换管的方法，以获得包括火箭发动机推力室的管束。这些管通过激光粉末注射焊接彼此连接，以封闭相邻管之间的任何间隙，并将管牢固地结合在一起。然后，通过使用合适的护套组合物继续进行激光粉末注射涂覆表面，使用适当的护套组合物进行火焰喷涂或等离子喷涂，或者通过钎焊或焊接先前形成的结构，将结构护套原位固定在管束上夹克到位。在本发明的扩展中，如果束被损坏或显示出不完美的连接，则执行激光粉末注射以提供用于束的修复方法。
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