Thanks for asking Derek. I am just ramping up again after having a short break, I finally received my order (after 5 weeks) from Soller Composites which I needed before progressing. I've slowly been gathering materials to make the booster. I now have everything I need so booster production will be s...

Shipping has also slowed considerably. It took about 5 weeks to get some carbon fiber delivered from the US (Soller Composites). Before covid it only took a couple of weeks. I was after some sleeves and plain weave 200gsm cloth. I wanted 6 meters of it, but they said they had a slightly narrower off...

I too have taken a bit of a break due to less launch activity. I have started getting back into it again though over the last couple of weeks.

They should have invited a rocket club along to put on a show if the main launch doesn't go ahead. Do you think perhaps they had a short window, and didn't have enough time to recycle?

@Aquaman That's a nice fin can! Since you are printing it, could incorporate the launch lug into the base of one of the fins? It looks like there may be enough room along the fin's root edge between the fillets. You could drop a little weight and drag.

That looks awesome Derek! I'm looking forward to the flight.

Very nice work on that Craig! It's been really interesting following this project. What kind of a range do you expect to get in the end when it is in the airframe?

Interesting article, thanks for sharing. For the mixing part I was originally thinking something along the lines of what abrasive water cutters do where they mix the abrasive into the jet of water just before it emerges out of the nozzle. But you could potentially get ignition inside this mixing cha...

Haha... okay, yup probably not a good idea then. I realize that trying to come up with some way of mixing the two just prior to injecting it would be difficult, it was more a thought experiment than something that may be practical.

Do you think it would be possible to build a hybrid motor that uses a slurry of say HDPE powder and nitrous? If you could mix the powder and nitrous inside the rocket before it gets injected into the combustion chamber, would that work? The thinking is that you would have maximum contact between fue...

Very cool Strud, I am not sure how the internal contacts are configured inside the 3.5mm plug, but is there any chance of a cross connect between the contacts as the plug is inserted or extracted?

We've recently bought the Mobius MIni V2 that is nice and compact. It's a nice camera with very nice footage. Did you need the lens to be in-line with the tube or looking out sideways? We did a quick review of the camera here: Dimensions are 54mm x 29mm x 14mm WDNyhKFdl8w Its only about AUD$100 and ...

Here is the latest video in the series. This video covers the completion of the launcher for this rocket. There are still minor tweaks to do, but we wil now move on to making the actual booster, and then tweak the launcher to suit. At this stage we are not sure on the timing of that but there are ce...

Also filled in the Survey. Good luck with the research project.

We had fun over the last few weeks working on a collaboration with Grady from the awesome Practical Engineering YouTube channel. (https://www.youtube.com/user/gradyhillhouse)

My son John did the editing of our water rocket part of the video.