Engineering topics

Gangl, Kenneth J.

Publications and source records attributed to Gangl, Kenneth J..

6 records

NASA NTRS1996

Chill-Bar Assembly For Cooling Areas Adjacent To Welds

Assembly of custom-shaped water-cooled chill bars developed for use during repair process in which cracks and pinholes in rocket-engine combustion chamber welded closed. Held in required relative geometric relationships by rigid framework, chill bars pressed against surface of chamber to conduct heat away from areas surrounding welds, preventing damage caused by overheating of areas not meant to be welded. Design features beneficial in other welding applications; for example, manufacture and repair of pressure vessels, chemical-processing vessels, and complexly shaped laboratory vacuum vessels.

Hoffman, David S.↗

NASA NTRS1995

Special-Purpose Robotic Welder

Robotic-welding apparatus developed for use in repairing main combustion chamber of rocket engine. Design features beneficial in other robotic-welding applications; for example, manufacture and repair of pressure vessels, chemical-processing vessels, etc. Design problem solved by iterative application of computer-aided techniques.

Mcferrin, David C.↗

NASA NTRS1992

Orbital Welding Head Held By Robot

Orbital welding head positioned by robot controls motion and voltage of arc-welding torch mounted in head. New head encircles part at torch end, and held and manipulated by robot arm at opposite end. Entire welding operation automated. Useful for operations in hazardous environments.

Gangl, Kenneth J.↗

NASA NTRS1991

Trailing Shield For Welding On Pipes

Trailing shield ensures layer of inert gas covers hot, newly formed bead between two tubes or pipes joined by plasma arc welding. Inert gas protects weld bead from oxidation by air until cooler and less vulnerable to oxidation. Intended for use on nickel-base alloy pipes, on which weld beads remain hot enough to oxidize after primary inert-gas purge from welding-torch cup has passed.

Coby, John B., Jr.↗

NASA NTRS1991

Smaller Coaxial-View Welding Torch

Coaxial-view torch for gas/tungsten arc welding has only two-thirds length and width of its predecessor. Shape and size similar to that of commercial arc-welding torch (Linde HW-27 or equivalent), even though it contains lens system. Collet that holds electrode has unique design allowing greater passage of light. Used in small spaces previously inaccessible, also introduced into production welding operations with minimum of disturbance.

Gangl, Kenneth J.↗

NASA NTRS1991

Plasma-Arc Torch For Welding Ducts In Place

Plasma-arc-welding torch redesigned, more suitable for applications in which moved in circular or other orbits about stationary cylindrical workpieces. Preserves elements of original design critical to performance and endurance, but modifies other elements to decrease overall size of torch. Electrode collet and collet nut installed and removed through hole in top; makes installation and removal easier.

Gangl, Kenneth J.↗