Parachute drop mechanism

For the balloon project it was decided that the balloon should be able to be separated from the parachute and pauload under certain conditions.
We developed and tested several methods for doing this and setteled with this very reliable method

A nylon filament is retained by a 1/4W resistor. When a drop is needed the resistor is powered for 3sec. thus melting the filament. This method has proven to be extremely reliable over many tests.
VID_20130220_214608IMG_20130220_214436IMGDrop system test_20130220_214547IMG_20130220_214012IMG_20130220_214002

Parachute drop mechanism, a set on Flickr.

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