Category Archives: Design

Radar Reflector

There was much thought and time spent trying to find a suitable design/construction procedure for a radar reflector. There are several ones on the Internet, e.g. Instructables one, but they did not seem that practical/suitable. This post describes how our … Continue reading

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Gimble for the Spot Messenger

It was decided after a bit of risk analysis regarding the parachute that it would be advisable to have a gimbal arrangement to ensure that the SPOT Messenger antenna is pointing directly up at all times. This is because Spot … Continue reading

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Researching Antennas

Selecting an Antenna As usual, I underestimated the importance of the antenna and the difficulties involved in selecting what ultimately needs to be a compromise. We can’t have everything! We need to decide upon the antenna for the HAB and … Continue reading

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Payload Design

The payload which I refer to here is all the box and all the gadgets we send up at the end of the balloon. It includes all the necessary pieces to ensure that they remain functional at all times. The … Continue reading

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Making the Payload Jacket

Materials I have just acquired 4 metres times 1.5 metres of ripstop nylon fabric also known as Spinnaker clothe. I also purchased 30metres of thick polyester thread, some attachment material (like Dacron tape) and one hundred pack of 1″ rings. … Continue reading

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