Quote:
>> A former HARA member, Dan Coon, put together 12 three liter bottles into a six
>> foot tall rocket that pressurized to 90psi and went up 200'. His "Tsuanmi"
>> rocket used a radio control to release a parachute, but his earlier
>> experiments used more of a ballast- drag technique like described above. He
>> simply had a short tube on the front of the bottle that loosely housed the
>> parachute. When the rocket tipped over at apogee, the chute sort of fell out
>> and deployed.
>12 bottles?!!! How were they connected together? I assume because the rocket
>was six feet long that the bottles were stacked up, but were they in paralell or
>was it 6-staged? Sounds like an ambitious water rocket!
The Tsunami had a fairly elaborate manifold arrangement of PVC pipe
and custom-machined adapters to***on to the pop bottles. The bottles
were arranged as three tiers of four bottles each, as I recall. As Vince
mentioned, it was later outfitted not only with RC for recovery deployment,
but rate gyros for active attitude correction!
Vince, I'm sure you've got some pictures of the Tsunami that we can
add to the HARA web page?
--
Huntspatch, AL