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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Mating cylindrical members are joined by spline to form an integral structure. The spline is made of tightly coiled, high tensile-strength steel spiral wire that fits a groove between the mating members. It provides a continuous bearing surface for axial thrust between the members.
Narrow-gap welding procedures for joining thick gauge aluminum alloy plate
Diffusion bonding techniques for joining large diameter stainless steel to aluminum alloy cylinders
The Saturn S-II stage and the Apollo spacecraft will include in their design and construction various pressurized tubing systems that will encounter service temperatures of 280° F to -423° F. Design engineering and reliability requirements and weight restrict ions have dictated new concepts to assure leak-tight joints for rocket engine fuel lines, pressurization systems, utility systems, and hydraulic systems. An investigation was initiated at North American Aviation, Inc., Space and Information Systems Division, utilizing the in-place automatically controlled miniaturized fusion-welding equipment originally developed by the Los Angeles Division of NAA and modified to meet the needs of Apollo and Saturn welded tubular systems. The objective was to make circumferential flanged weld joints in any position in 304L stainless for Saturn S-II and sleeve-type joints in 304L for Apollo. Inconel X, commercially pure titanium, 5052-0 aluminum, and 6061 T6 aluminum were also tested experimentally. Extensive environmental, static, and dynamic testing programs were conducted to determine the as-welded mechanical properties, design allowables, and reliability for the tube joints. This paper discusses both the experimental and production phases. Subsequently, the new tube welding process was approved and incorporated into manufacturing fabrication methods for tube joining.
State-of-the-art of dissimilar metal joining by solid state diffusion bonding and roll and press welding, emphasizing stainless steel and aluminum alloy
Survey of NASA supported metals joining research having industrial applications
Dissimilar metal joining by solid state welding
Joining techniques and structural stability of beryllium alloys for fabricating aerospace vehicles
Joining of refractory-austenitic bimetal tubing of niobium and stainless steel using electron beam, gas tungsten arc, and plasma arc welding techniques
Joining bimetal tubing consisting of austenitic stainless steel with inner lining of niobium or tantalum
Portable electromagnetic coil enables high precision expansion or constriction and joining of large diameter metal tubes. A nonconducting mandrel or forming die is used on the side of the tubes wall opposite the coil. The coil is insulated from the tube by a thin plastic sleeve.
Survey of electron beam and laser techniques applicable to spacecraft joining
MIG and TIG welding processes for joining 2014-T6 aluminum alloy
Activated diffusion brazing studies of joining methods for composite air-cooled turbine blade and vane fabrication
Method and apparatus for shaping and joining large diameter metal tubes using magnetomotive forces
Joining aluminum to stainless steel by bonding aluminum coatings onto titanium coated stainless steel and brazing aluminum to aluminum/titanium coated steel
Method and apparatus for portable high precision magnetomotive bulging, constricting, and joining of large diameter metal tubes
Method and apparatus for precision sizing and joining of large diameter tubes by bulging or constricting overlapping ends