This blog covers the day to day progress of water rocket development by the Air Command Water Rockets team. It is also a facility for people to provide feedback and ask questions.

Tuesday, March 13, 2007

Jet Foaming Test Flights

This weekend we had a chance to fly a couple of rockets using the Jet Foaming technique.

The results of those flights including video and photos are here:
www.aircommandrockets.com/day28.htm

We definitely need to do more testing on the foam, as it seems to be giving the rocket a bit more performance, but we won't know for sure until we can build a thrust measuring device and performs some static fire tests again.

Feedback and suggestions are always welcome.
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2 comments:

markusj said...

Hi @ all!
As first i have to say, that you are making great work!
I'm a member of a german rocketry-forum (by the way ... i'm sorry for my bad english) www.raketenmodellbau.org, which is having a big waterrocket-subsection.
One of our members found your foam-videos ... actually we are discussiong a lot about them. Great work!
Maybe, you could look after the "symmetrical splice technique", which allows to build rockets witch sizes bigger than 2m and volumes up to 6 litres and more ...
Perhaps, you have some time to visit our German "Wasserraketen"

Greetings!

Markus Jung

By the way: If you increase the inner diameter of your robinson-connectors, you propably would get faster starts and higher altitudes. SST-Rockets have only one big Body (without robinson-connectors or other flow-breaking things) and are accelerating faster ... which reduces the distance with water "payload"

George Katz said...

Guten Tag Markus,

Thank you for the reference to the website. I had a look around the site quite a bit and especially the water rocket section. It looks like there is huge following and quite advanced water rocket construction techniques in Germany. The fact that the site is in German didn't matter because there are some great website translation tools on line.

We haven't gotten into the splicing side of things yet as good glues are hard to come by here in Australia, but we will one day.

The size of the Robinson coupling really doesn't matter as long as you are only passing air through it, but we believe they will be able to withstand greater pressure than splicing.

We are specifically not after high acceleration and necessarily high altitude yet, at the moment we are more interested in carrying various payloads and developing reliable technology.

Keep them flying!

- George