Everyone wants a miniature wind tunnel to check the aerodynamics of scale model cars, drones, or other small objects? Then look at dannyesp’s 3D printing DIY wind tunnel (video, embedded below). Don’t forget to browse other photos in this reddit thread.
There are not many plans available, because, as dannyesp admitted, this device is largely the product of trial and error and garbage can components. Videos and photos are enough for any enterprising hacker.
The core of the device is a large fan made of discarded UAV motors. The fan is located at the rear of the tunnel. A small anemometer is placed in front, and some 3D printing baffles are also used to smooth the turbulent incoming air.
The trace of fog came from a cut-off range hood. The steam is delivered to the front of the tunnel through some pipes. There, the steam trajectory is drawn to the low-pressure area at the rear, moving on and around the object on the way. [dannyesp] also mentioned that the platform for fixing the object is installed on the track, which is equipped with some kind of pressure sensor to try to quantify the wind resistance.
We want to take a moment to appreciate how clean this “junk parts” project looks, even if it is made of broken photo frames and so on. All this boils down to a thoughtful gathering. After all, hackers don’t have to look like hackers working. We also like this small control box. It has no separate power indicator, but lights up like a small night light when powered on.
Hacker carburetor is a magical way to create a small, portable fog machine. These can create wonderful clothing effects like the skull of this smoking ghost rider. They are a good way to turn ready-made consumer goods into something more expensive a few years ago.