SPINNING THIN-WALL SECOND-STAGE MINUTEMAN NOZZLE THROAT INSERTS OF UNALLOYED TUNGSTEN,
Abstract
The feasibility of fabricating full-scale second-stage Minuteman nozzle throat inserts of unalloyed W by a combination of shear and conventional spinning was investigated. Replacing the present forged-and-machined nozzle throat insert with a spun thin-wall insert would significantly reduce nozzle weight. Thin wall (0.060-in.-thick) convergent-divergent nozzle throat inserts were successfully fabricated from 0.250-in.-thick unalloyed W plate by a combination of shear and conventional spinning. Tungsten plates were shear-spun into 60-degree-included-angle cones with a wall-thickness reduction of 50%. These cones were then spun to an included angle of 30 degrees; wall-thickness reduction was again 50%, for a total reduction of 75%. The 30-degree cones were conventionally spun to an 8-degree included angle and then to a convergent-divergent configuration conforming to the second-stage Minuteman nozzle throat-insert design. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1962
- Accession Number
- AD0281710
Entities
People
- F. L. Banta
Organizations
- Aerojet Rocketdyne Holdings