DESIGN AND COMPARATIVE BALLISTICS OF NEW EXPERIMENTAL CONCRETE PRACTICE BOMBS WITH DRUM-TYPE AND SMALL AND LARGE BOX-TYPE FIN ASSEMBLIES,

摘要

Qualitative description of the theory used in design of practice and demolition bombs is given briefly in this report. The known important factors to be considered in fin design are discussed. The results obtained from ballistic tests with drum-type and small and large box-type fin assemblies are given. The drum-type fin is aerodynamically superior to the box-topype and a box-type with small fin diagonal is superior to a box-type with large fin diagonal. (Author)