A do-it-yourself launchpad for compressed air-powered rockets

A traditional mannequin rocket engine is straightforward flamable strong gas (black powder or extra superior composites) molded right into a cylinder that makes use of increasing fuel to provide thrust. Although it’s minimal, there’s some hazard there. An alternate is compressed fuel, which may also broaden to provide thrust — simply with out the explosive chemical response. If that intrigues you, then check out this compressed air launchpad for paper rockets by Aiden Wyandt.

Compressed air may be harmful, too. However 80 PSI (the very best examined strain for this venture) doesn’t pose an enormous danger with correct {hardware}. The draw back is that all the fuel growth is quick and comes from the launcher. In that approach, it’s extra like a cannon than a real rocket. That is good for reasonable, handcrafted paper missiles and the launcher makes that each enjoyable and protected.

Contained in the laser-cut plywood enclosure is an Arduino UNO R4 WiFi board. It receives energy from a 20V DeWalt software battery boosted to 24V. That additionally powers solenoid valves by relays and the Arduino controls these, together with the LED lighting. The Arduino hosts an internet interface for arming and launching, so the youngsters can transfer to a protected distance. As soon as the countdown completes, the solenoid will open and compressed air will broaden into the launch tube to ship the rocket flying.

That air comes from an exterior air compressor by a typical becoming. It goes right into a pair of small tanks and the solenoids sit between these tanks and the launch tubes. As a result of there are two, this launcher can deal with two rockets earlier than needing to be reset.