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Onboard camera and a spiral nozzle

2/1/2013

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    This video show the recent testing of a new avionics bay, onboard camera and a spiral nozzle.
    The Avionics bay is lighter and a better lay out then the previous design, but once again the altimeter did not register the flight. So some more testing wil be made.
    The Onboard camera worked well but placing it on a 1.25L rocket made the footage erratic.
    The Spiral nozzle seemed to work well and displays a good exhaust plume.

Onboard Camera
Spiral Nozzle
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Altimeter

8/4/2012

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Picture
    I recently obtained a StratoLogger SL100 from PerfectFlight.
http://www.perfectflite.com/sl100.html
    Because this altimeter came with two outputs for recovery I started to design a new recovery system. This new recovery system would use the two outputs to first deploy a parachut at apogee the the second would open the parachute at a preset altitude. More on this in the Parachutes page.

Picture
    The recovery system would also be made as  aerodynamic as possible. Knowing that the most aerodynamic shape for subsonic flight was the Elipsoid with a length 2x its width, I put the values into this 125-nosecones excel spreadsheet.

Picture
Picture
    I created the mould with the device in the picture, more infomation here. The nose cone was made from paper mache.

Picture
Picture
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Australian Flag Parachute

3/7/2011

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Picture
  After pulling apart an Australian Flag, I sowed around the edge for streangth and to stop freying. Then I sowed 8 cotton strings to it then made sure the outer strings were further away then the inner strings to keep the parachute as rectangular as possible.
    No hole was needed for a stable decent because the flag was small and porous, containing lots of small holes. It worked out quite well but was a bit difficult to see from 100 or so metres below it.

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Rockets and Trees

20/3/2011

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    Trees, the arch enemy of the model rocket. Hopfully this story can help if your rocket ever gets stuch in a tree.
    This weekend I had got my Vontex rocket stuck 10m up in a tree. After many attempts to shoot it out someone had tied a weight to a long rope. after throwing the weight over the branch, both ends were grabed. Finnaly the rocket was shaken free!
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    My Website

        This site is to show my developments in the hobby of water rocketry.
    While recording methods of design and construction.

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