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Day 233 - ARRO Visit

ARRO Visit

After a few months of trying to co-ordinate a launch, this week we had Tavvi from ARRO rockets come visit at Whalan Reserve. He brought one of his water rockets to fly. Luckily most of the design is similar to ours so he was able to fit to our guide rail and launcher.

There were a couple of issues with the tornado tube sealing properly so we replaced it with one of ours.

On the first launch we pressurised it to 100psi. But just as we were getting up to pressure, the rocket self launched. The 3D printed nozzle broke apart so the rocket took off. The parachute did eject around apogee but got tangled on one of the fins and so the rocket came down hard and damaged the nosecone and dented the top bottle. That was just unlucky.

For the second flight the flight computer wasn't working properly, likely damaged during the crash, and so we replaced the entire nosecone with one of our spare ones. We also replaced the nozzle with one of ours. The rocket was filled with 1500mL of water and some shampoo.

We again pressurised the rocket to 100psi and the rocket launched nicely this time. The parachute deployed right around apogee and the rocket landed safely. The altitude was around 332 feet.

For the third flight we again repeated the flight at the same pressure, and the same amount of water but this time without any foam, although there was some residue inside the rocket. The rocket flew well again with the parachute safely deploying near apogee and the rocket again landing safely downrange.

Pyro Flights

Paul had brought some of his LPR rockets to the launch. He flew his Equinox a couple of times on a D12-7 which flew quite nicely. On the first flight the deploy was right around apogee, although the deployment was expected later in the flight due to the 7 second delay. Ideally the delay should be around 5s, but we didn't have D12-5s on hand. On the second flight the delay was a couple of seconds after apogee which was expected. The rocket landed well under parachute.

Paul also flew his FireFlight on a B6-6 which also flew and landed well.

Overall it was a good day for flying rockets with ideal weather conditions, and it was good to see another fellow water rocketeer.