Chem-Tronics, Inc.

Other

Daniel J Brimm

James R Gramse

Method of protecting selected parts of a component against overheating while the component is being thermally treated.

Thermal processing methods

Methods of, and equipment for, protecting selected parts of a component against overheating while the component is being thermally treated.

Cooling muff used in thermal processing method

Integrally stiffened skin structures (72, 88, 96) which can advantageously be substituted for structures of the honeycomb, skin-and-stringer, and integrally machined types. Exemplary of a virtually endless list of components in which the integrally stiffened skin structures can be employed are jet engine components, aircraft and missile fuselages, jet engine pods, aircraft landing brake components, components with compound curvatures such as bulkheads and fairings, flat and curved panels, and conical and other shell-like components. Materials from which the structures can be fabricated include stainless steels, superalloys, titanium and aluminum alloys, other metals, and a variety of composites including those advanced ones with a high strength-to-weight ratio. Novel features of the structures include: secondary ribs (74) for raising resonant frequencies and increasing structural stability with a minimum increase in weight; tapered ribs (98) which provide a significant weight reduction without unduly affecting their performance; and the elimination of node material. That provides an additional, significant weight reduction.

Method of forming integrally stiffened structures

Methods for fabricating metallic components in which expansion of a mandrel and changes that take place in the workpiece material during precipitation hardening--phase changes, volume contraction, and increased ductility--are utilized to size the component to a selected diameter and to stabilize the component at that diameter. Mandrels for such methods.

Methods for fabricating metallic workpieces

Methods for shaping metallic workpieces which utilize a single faced die and the use of heat and pressure to conform the article to the shape of the die surface by creep forming.

Metal forming methods

Chemical milling processes which employ a series of masking and metal removal steps. Apparatus for orbiting the workpiece in a prescribed manner about mutually perpendicular axes during the metal removal steps.

Growing community of inventors

La Jolla, CA, United States of America

Daniel J Brimm