Accession Number : ADD002507

Title :   Beryllium Reinforced Composite Solid and Hollow Shafting.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Schmidt,Richard

Report Date : 17 Feb 1976

Pagination or Media Count : 4

Abstract : A solid or hollow shaft has an aluminum or titanium matrix reinforced with arcuate-shaped beryllium ribbons arranged around a central rod or core to form a circular cross-sectional configuration. The shaft has a high degree of torsional stiffness which enables it to be used on advanced aircraft or high-speed rotating machinery without mid-support bearings. The shaft may be formed by cladding the beryllium rods in aluminum or titanium and arranging them around the central rod or core to form a preform with a circular cross-sectional configuration. The preform is then subjected to hydrostatic pressure, causing the beryllium rods to deform into arcuate-shaped ribbons. The core may then be retained or leached out to provide a hollow shaft.

Descriptors :   *Beryllium, *Fiber reinforced composites, *Shafts(Machine elements), *Patents, Aluminum, Titanium, Aircraft equipment

Subject Categories : Laminates and Composite Materials
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE