model rocketry handbook 21st century editionBlast off into the world of model rocketry with this updated handbook for the 21st century. From propulsion to recovery systems, explore the science and art of launching rockets with clarity and excitement. Say goodbye to gravity and hello to the thrill of reaching new heights in your backyard or at the launch pad. With step by step instructions and safety tips, every launch becomes a celebration of exploration and discovery. Whether you're a novice