This DIY Aircraft Is Just Plane Amazing

The simplest way to get started experimenting with aerodynamics is to grab a sheet of paper and fold it into the form of an airplane. Once the fun of that wears off, you can take another small step and toy around with wind-up planes. Powered by energy stored in a twisted rubber band, these planes can sustain their flight for a longer time.

Or if all of this sounds like kids’ games to you, you could build a DIY supercapacitor plane like Tom Stanton recently did. He reimagined the classic wind-up airplane using modern electronics, replacing the rubber band with a supercapacitor, a motor, and a hand-cranked generator. The result is a remarkably lightweight aircraft that can be charged in seconds and remain airborne far longer than its charge time might suggest.

The airplane is designed around a 10-farad, 2.7-volt supercapacitor weighing just around 3 grams. While larger capacitors can store more energy, Stanton determined that their added weight made them impractical for flight. Paired with a tiny brushed motor typically found in toy drones, the system delivers enough thrust to keep the plane aloft despite operating below the motor’s nominal voltage range.

A carbon fiber rod forms the fuselage, offering rigidity without unnecessary mass. The wings and tail, however, are where the build becomes particularly inventive. Stanton developed a technique that involves 3D printing a thin plastic lattice directly onto tissue paper. The heated plastic bonds to the fibers, creating a lightweight, pre-skinned structure that is reminiscent of what was used on the earliest airplanes.

Once printed, the wings are shaped into an aerodynamic profile using heat and a curved template. This process gives them an airfoil-like curvature, improving lift. Early prototypes revealed issues with drag and structural stress, prompting a shift to a high aspect ratio wing design — long and narrow — which reduces energy loss from wingtip vortices and improves efficiency.

Stability is achieved through a subtle but effective feature: dihedral. The wings are designed to flex slightly upward during flight, naturally stabilizing the aircraft without complex control systems. Meanwhile, the positioning of the motor below the wing creates a thrust line that pitches the nose upward under power, helping the plane climb quickly during its initial burst of energy.

Charging the aircraft is as simple as turning a small hand crank connected to a generator. An analog voltmeter ensures the capacitor stays within its safe voltage limit. In testing, just four seconds of cranking provided enough stored energy for a flight lasting up to 45 seconds.

Weighing in at only 15.6 grams, the plane demonstrates how modern components and clever engineering can breathe new life into classic concepts. However, the build is not without its challenges. The tissue-paper wings are sensitive to environmental conditions, particularly humidity, which can cause them to sag and lose performance.

This project is one that you really need to see in action to fully appreciate. Be sure to check out the video below.