Submitted by Damien on Thu, 12/05/2013 - 21:46
Maybe refering to the "plumbing" - the circuit in which high pressure nitrous oxide will transit from its tank to the combustion chamber - too often has led us to underestimate the complexity and dangers of a high pressure circuit, where a gas at an initial pressure of 60bars will circulate.
Submitted by Damien on Wed, 11/20/2013 - 23:27
Yesterday night at the Electrolab was dedicated to two things: testing the larger gears for the ball valve to make up for the lack of torque of the stepper motor we are currently using, and welding with oxyfuel gas a part of a whipped cream siphon used to unload nitrous oxide cartridge and a standard plumbing link.
Submitted by Damien on Thu, 10/31/2013 - 14:24
As part of the Alpha rocket plumbing, a ball valve is used to set off the flow of oxidizer (in our case, nitrous oxide) and possibly to stop it, too.
Last Tuesday at the Electrolab I spent the evening preparing the electronic circuit to control a Nema 17 stepper motor, through an Arduino sketch prepared by bazza.
Submitted by Damien on Tue, 10/08/2013 - 21:35
The final choice for powering our static engine test system was made tonight: we're going to go for a slightly hacked computer power supply unit (PSU), connected to a wall plug through a long extender cable.
The advantages of a PC PSU is that it provides natively 12V and 5V current, with many Amps to spare, and no further electronic components to use.
Submitted by Damien on Wed, 10/02/2013 - 20:05
There is a pyromaniac buried in each little boy... and in grown men, too!
Yesterday night at the Electrolab was dedicated to testing a fairly simple ignition system, consisting of a Sparkfun Spark Gap Igniter to set off combustion, and a blend of steel wool and cotton to burn.
Submitted by Damien on Thu, 09/12/2013 - 21:31
Tonight at my local hackerspace, Electrolab, I brought the ball valve ordered last week to RS Components. Michel, an old timer of the lab specializing in mechanics, was prompt to drag me to the mech corner of the lab to test various plumbing links. The aim was to find the right links to pair it with the paintball gun tank salvaged in the lab, which will be used to store the oxidyzer in the very first engine tests on the test stand.
Submitted by Opennautics on Sun, 08/04/2013 - 07:50
Welcome to Opennautics. We are part of the maker movement. Our aim is to produce open source hardware and do so in a way that everyone from beginner to advanced can participate. We are a community that shares ideas and creates designs around amateur rocketry and astronomy. We build tools to aid in space exploration.