A group of 3D printing enthusiasts, tech lovers, and sci-fi fans recently joined forces to build a unique spherical UAV for a local mechanical design competition. One of the main challenges was to make the aircraft look "unusual," and this team definitely delivered. They shared their entire process, including materials, design files, and STLs, on Instructables, making it easy for others to follow along.
The team is known for being huge fans of science fiction. Their design was inspired by iconic elements from movies like *Prometheus*, where the drawing aircraft sparked their imagination, and *Stargate*, with its flying photo ball called Kino. They also drew inspiration from the *Star Wars* IT-O Challenger Robot. While they explored many other sci-fi sources, the final design took shape from these key influences.
After deciding on the concept, the team researched the latest in spherical drone technology. They were particularly fascinated by the Japanese Defense Ministry’s spherical flying car and the Gimball, the first collision-avoidance aircraft. They also studied various coaxial rotor remote control toys with cage-like structures. However, they noticed airflow issues in some designs and aimed to improve upon them.
“We decided to use a coaxial counter-rotating rotor system, which allows us to control the direction of the aircraft simply by adjusting the speed of the propellers,†the team explained.
Their propulsion system involved placing heavy components like the battery under a spherical cage, ensuring that the center of gravity remained stable. This allowed the aircraft to adjust itself dynamically, generating thrust in the opposite direction when needed. The intake system was designed to channel air into four output tubes, directing airflow efficiently to one side of the sphere.
Many parts of the aircraft were 3D printed using ABS plastic, including the intake manifold, airflow diverter, and output manifold. Other components were made from laser-cut paper laminate foam, combining lightweight materials with structural integrity.
This project not only showcases the team's creativity but also highlights how real-world engineering can be inspired by the imaginative worlds of science fiction. Whether you're into drones, 3D printing, or just love creative engineering, this spherical UAV is a fascinating example of what can be achieved when passion meets innovation.
(Editor)
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