Advances in Space Science and Technology, Volume 5 looks into the major unsolved solar problems of thermodynamic structure, geometrical structure, velocity fields, flares and other transient phenomena, solar magnetic fields, and corpuscular emission. This book discusses the design, development, and testing of launching rockets. Organized into five chapters, this volume begins with an overview of the role of space observations in solar physics. This text then examines the progress in communication relay satellite techniques, which is a very important aspect of space technology. Other chapters provide a comprehensive review of solid propellant rocker technology, treating such subjects as factors affecting propellant performance, ignition, grain design, testing, quality control, and thrust vector control. This book discusses as well the characteristics of an environmental control compatible with requirements within the manned space vehicle. The final chapter deals with orbital operations. This book is a valuable resource for astronautical researchers, astronomers, and scientists.