Open Source $96 Guided Rocket Recalculates Trajectory Mid-Flight

The $96 Guided Rocket: Democratizing Aerospace with 3D Printing and Open Source

A new open-source project is challenging the high-cost paradigm of aerospace engineering. Developer Alisher Khojayev has published a complete prototype for a Man-Portable Air Defense System (MANPADS)-style rocket and launcher, with a total hardware cost of just $96. The system's most remarkable feature is its ability to recalculate its trajectory mid-flight using an onboard $5 MPU6050 inertial measurement unit (IMU) sensor.

This project, hosted on GitHub under the name "MANPADS-System-Launcher-and-Rocket," represents a significant leap in accessible rocketry. It combines consumer-grade 3D printing, widely available microcontrollers, and sophisticated flight control algorithms to create a functional guided system. The repository has already garnered significant attention, with 196 stars and 64 forks at the time of writing.

System Architecture: From Launcher to Guided Flight

The project is a holistic system comprising both a rocket and its dedicated launcher. The launcher itself is an intelligent platform, integrating GPS, compass, and barometric sensors to establish its own precise orientation and location before launch. This data forms the initial firing solution for the rocket.

The rocket's airframe is 3D-printed and features a key innovation: folding fins and canard stabilization surfaces. These are actuated in flight by servos controlled by the rocket's own flight computer. This active control system is what enables the mid-flight trajectory adjustments, moving beyond simple ballistic flight.

Powering this guidance is an ESP32 microcontroller, a popular, low-cost, and Wi-Fi/Bluetooth-enabled chip. Paired with the $5 MPU6050—a combined gyroscope and accelerometer—the system can constantly monitor its orientation and acceleration, calculate deviations from the intended path, and command the fins to correct its course.

Engineering Rigor on a Shoestring Budget

Despite its low cost, the development process followed professional aerospace engineering practices. The designer used Fusion 360 for mechanical CAD and OpenRocket for aerodynamic stability simulations. All design files and firmware are openly available in the GitHub repository.

Extensive documentation, including a full bill of materials, system flow diagrams, and rocket specifications, is provided via an associated Google Drive archive. This archive also contains videos of mechanical assembly, electronics testing, launch tests, and rocket motor development, showcasing the iterative prototyping process.

The project's stated goal is a "proof-of-concept prototype," highlighting its experimental nature. However, the technical execution—from simulation to physical testing—demonstrates a high degree of competence and replicates methodologies used in larger programs, albeit at a micro-scale.

Context and Implications in the Aerospace Sector

This DIY project emerges against a backdrop of significant activity in both established and NewSpace sectors. For context, NASA's Flight Demonstrations and Capabilities (FDC) project and Subsonic Vehicle Technologies and Tools (SVTT) project support the testing of novel aerospace technologies across all phases of maturation.

Meanwhile, the commercial launch industry celebrates milestones like Firefly Aerospace's Alpha rocket reaching orbit, and startups like AIRMO secure millions in funding for specialized satellite missions. Venture capital continues to flow into space, as seen with Samara closing a $10M seed round and Aule Space raising $2M for satellite life extension technology.

The $96 rocket sits at the extreme opposite end of this financial spectrum. It underscores a powerful trend: the democratization of aerospace technology. Just as open-source software and affordable 3D printers revolutionized prototyping in other fields, they are now doing the same for rocketry and guided flight.

Why This Development Matters

The implications of such accessible technology are profound. Firstly, it dramatically lowers the barrier to entry for experimental rocketry and aerospace education. Students and hobbyists can now build and experiment with guided systems that were once the exclusive domain of well-funded institutions or governments.

Secondly, it serves as a potent demonstration of rapid, low-cost prototyping. The principles tested here—sensor fusion, active flight control, and systems integration—are directly applicable to larger commercial and research projects. It proves that core guidance, navigation, and control (GNC) concepts can be validated for less than the cost of a high-end smartphone.

Finally, the project highlights the double-edged sword of technological diffusion. While it enables innovation and learning, the open-source availability of such designs necessitates responsible discussion about safety, regulation, and ethical use. The developer has framed it clearly as a prototype for research and demonstration purposes.

The Future of DIY Aerospace

This project is not an isolated case but part of a growing movement. It points toward a future where small teams or even individuals can develop and test advanced aerospace concepts with minimal capital. The integration of cheap, powerful sensors (like the MPU6050) with capable, networked microcontrollers (like the ESP32) is the key enabler.

As these consumer components continue to improve and drop in price, the sophistication of what can be built in a garage or university lab will only increase. This trend could accelerate innovation cycles and uncover novel solutions to aerospace challenges, complementing the work of large agencies like NASA and major aerospace contractors.

The $96 guided rocket is more than a fascinating hobbyist project; it is a benchmark for the new accessibility of flight technology. It demonstrates that with modern tools, ingenuity, and open-source collaboration, the sky is no longer the limit—it's the testing ground.