Engineering Papers⌕ Search

Engineering topics

Allen, J. H., Sr.

Publications and source records attributed to Allen, J. H., Sr..

Fabricating Thin-Shell Heat-Transfer Models

Freestanding shells produced for experimental aerodynamic-heating tests. Heat transfer shells require several steps and several precise molds. First, interlocking aluminum male and female molds fabricated. Holes for thermocouples drilled through male mold at desired locations. Wires having same diameter as thermocouple wire placed through holes in male mold flush to female mold. Epoxy exposed to vacuum to remove air bubbles poured between male and female molds to form thin female mold. Once mold cured, wires removed and aluminum molds separated.

Avery, D. E.↗

Lathe attachment used to machine elliptical cones

Close-tolerance elliptical cones are fabricated by cutting-tool guide assembly used with conventional tracer cartridge on turret lathe accurately produced in two machine operations.

Allen, J. H., Sr.↗