I've uploaded the update from this weekend's NSWRA launch on our main website here:
The update includes photos and video of the Polaron G2 launch. The flight was encouraging for us in order to keep pushing further with the G2 development. Although the 210psi launch pressure was 20% lower than what the rocket was designed for, we decided to at least get a couple of good flights in before increasing the pressure again. Also encouraging is that the simulator results from two different simulators predicted the altitude quite accurately for this flight. This means we can continue to use the simulators to predict the behaviour of this class of rocket.
The G2 in this configuration still has room for improvement on two fronts. Each 10psi increase in pressure beyond the 210psi adds around 50 feet to the altitude. These pressure chambers have been hydro tested to 270psi. The rocket is designed to be extended by a further spliced-quad like we used in the first attempt. This extra spliced quad should add a further 100 feet or so. How the rocket stands up to higher speeds and stresses is unknown at this stage, so more fights will follow.
We also flew a second high pressure rocket on the day - Axion G2 - that is based on the Axion series of rockets. The rocket flew well, but failed to deploy the parachute and crashed. I can see the G2 name is going to get confusing here. The 'G' in the name simply stands for "Glass"-reinforced and the 2 is just the second in the series.