Our electronic parachute will consist of a sealed upper section of the rocket with a parachute inside and the nose cone on top. The section will be pressurised with air from the guidance system, and the nose cone pops off, bringing the parachute out with it.
A diagram is shown below:
27/03/17: We have tested a similar system for use in the UKRoC event, and it has worked. We now need to tweak some variables in the code to get it to deploy at the correct altitude.
We have used an Arduino instead of a Raspberry Pi, since it is better suited to controlling servos. We have not used a CO2 cylinder to pressurise the expansion chamber, instead we have used a simple bike pump, since it will be cheaper and lighter.