On the basis of materials published in the Soviet and non-Soviet press, the book offers a survey of the designs of guided and unguided rockets for various purposes and having solid-fuel engines. The design elements of individual assemblies and units, the composition layouts of rockets, and questions relating to the regulation of thrust as regards quantity and direction are examined. Engineering methods for calculating the elements of trajectories of guided and unguided rockets are given, as they apply to the problem of ballistic designing. The factors affecting the scatter of unguided rockets are examined. Optimum parameters for rockets and design units are evaluated via synthesis and analysis of weight equations for rockets, approximate external ballistic relations being utilized. The fundamentals of calculations of solid-fuel rocket engines and of charges for them as regards sturdiness are set forth.