Payload Design

The HackHD camera (purchased from LittleBirdElectronics) is installed standalone with it’s own 3 x AA battery pack. We purposely kept this separate from the rest of the electronics to reduce chance of failure of all electronic systems. It is shown pictured below:-

The video camera we use to film the whole mission from the balloon

We installed a 32GB Class 10 microSD card, the largest size we can install in the camera to give us about 3.5hrs of video footage. We choose Class 10 because we wanted to be sure that the camera could write to the microSD fast enough. The idea with the microSD is that we can start it up just before flight and if we are able to recover the payload, then be able to play the whole launch from a rather good vantage point.

The Abrasion Jacket

The styofoam container is a great insulator and is light but it does not have the strength to withstand a long possibly windy flight, the balloon popping. So what we do is put this styrofoam package (with all the electronics within it) into a ‘jacket’ made out of spinnaker cloth (ripstop nylon). This is the same sort of material used in kites, yacht spinnaker sails.

We are closely following a design described in the document:-

Below are some photos taken during construction:-

Sewing opposites ends of side piece to create tube

Attachment of Dacron loop with 1inch ring attached

Pinning bottom fabric to side tube piece, in preparation for sewing

Payload in Jacket - the lid still to complete and holes for cameras/antenna

This jacket provides a means of attaching the nylon rope from the parachute to the payload.

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