Dissemination of Solid and Liquid BW Agents
Abstract
In reporting on the continuing study of the mechanics of dry powders, data are presented which were obtained with the improved multipurpose test unit in which shear strength, tensile strength and bulk density are measured within the confines of a single isolator lab. Initial findings are discussed for an investigation of three supposedly identical Sm samples which exhibit distinctly different compaction characteristics. Particle-size distributions (Whitby) are included, which show a smaller MMD for saccharin after compaction to a compressive stress of 2.84 x 10 to the 4th dynes/cubic centimeters. Tests showing that the addition of Cabo-Sil to powders increase the stress required to produce a given bulk density are described. An investigation of the effectiveness of graphite in reducing side-wall friction of compacted powders sliding in cylinders is reported. A 50 percent reduction in the force required to eject the compacted powder has been observed when graphite is used as compared to the force required using a bare aluminum surface. Progress on the fabrication of the second E-41 spray tank is discussed. Minor design changes in the E-41 are described. Plans to flight test the E-41 at Eglin AFB on the F-100D and the F-105 are mentioned.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 10, 1963
- Accession Number
- AD0346751
Entities
People
- G. R. Whitnah