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.

Friday, August 06, 2010

Mk3. Staging Mechanism Details

We’ve uploaded the full details of how the Mk3. staging mechanism works to here:
And a full tutorial on how to build it is here:
The tutorial has step-by-step instructions with photos as well as a 2 part video that shows the procedure.

We’ve also uploaded a launch report of all the test flights we have had with the stager over the last 2.5 months. The launch report contains a highlights video from these launches:



Tom Mihelich said...

Absolutely fantastic craftsmanship, testing plan and documentation.
Great work George. This kind of work is what inspires everyone to push on to the next level for sure.
Thanks again for sharing this work on your site in the way you do.

-Tom Mihelich

George Katz said...

Thanks for the nice words Tom. :) Publishing the details of the things we build helps us in turn because it allows others to suggest ways of improving the designs.

ZAAP said...

Hello, thank you for the projects, they help a lot!

I'm from Brazil .... here there are not many rockets of water ...
one doubt:
I have a mk3, 190 gram. What would be better to achieve a greater distance, this mk2 or mk3?

George Katz said...

Hi Pedro,

Did you say you had a go at building the Mk3 staging mechanism? 190 grams seems like a lot. The ones we build are only 40 grams. Do you have any pictures of the one you made?

The Mk2 and Mk3 behave in a similar manor, but the Mk3 is only half the weight so I would expect the performance to be better for the Mk3.

ZAAP said...

Sorry, I said wrong, I have a mk2 with 190 grams ...
It really is a lot of weight ... for lack of exact parts used in your project, we had to redo with others.

I am excited about the MK3, it seems more simple to do .... when it is placed at the base, is just caught by the weight of the rocket? or is there a lock that is released during flight

George Katz said...

Hi Pedro,

The weight of the sustainer causes the nozzle of the sustainer to be locked into the stager. While the rocket is accelerating the nozzle remains locked.

The full details are here:


- George