Pro Series II™ Doorknob

The Pro Series II™ Doorknob rocket is a powerful tool for connecting STEM learning to real-world scientific history. Based on the high-altitude research rockets used during Cold War-era nuclear testing, this 1:5.3 scale model introduces students to aerospace engineering, data collection, and the environmental science questions of the 1950s—all through hands-on assembly and high-powered launches. Originally developed to study the effects of nuclear detonations on the upper atmosphere, the Doorknob rocket reached altitudes of up to 50 miles during its historic missions. Now, students can explore those same engineering principles with a model that’s impressive in size, engaging to build, and highly customizable thanks to included scale and sport-style decals. Key Features for Educators: 1:5.3 scale model of the Cold War-era Doorknob research rocket Supports historical and scientific lessons in atmospheric data collection Flies on Pro Series II™ engines for advanced altitude demonstration