projects:hadie
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projects:hadie [2011/01/19 10:27] – [Antenna] fsphil | projects:hadie [2011/06/14 09:00] – fsphil | ||
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The flight code for Hadie-2 is available here: http:// | The flight code for Hadie-2 is available here: http:// | ||
===== Third Flight ===== | ===== Third Flight ===== | ||
- | A third flight | + | The third flight |
- | * A proper PCB instead of strip-board. | + | * A much better 1/4 wave vertical antenna, made with just coax and no solder joints. |
* Add a 16-bit checksum to the SSDV packet structure. | * Add a 16-bit checksum to the SSDV packet structure. | ||
- | * Use Reed-Solomon error correction on the telemetry strings. | + | * Fixed a trivial bug that caused |
- | * Have dl-fldigi configured | + | |
- | + | ||
- | Apart from the antenna problems everything went extremely well for Hadie' | + | |
==== Antenna ==== | ==== Antenna ==== | ||
- | I plan to use a 1/4 wave vertical again, but made in the style of the bazooka vertical used on the first flight. The end of the coax will be stripped back 1/4 wavelength, with the outer shield | + | After the massive failure |
+ | |||
+ | The improvement over the last flight was dramatic, with reception of telemetry | ||
+ | |||
+ | ==== Landing ==== | ||
+ | |||
+ | The payload stopped descending at a surprisingly high 361 metres. It had landed in a forest on a mountain, 11 metres up a tree. The first attempt to recover it failed, but we'll be returning soon to have another go. |
projects/hadie.txt · Last modified: 2011/07/10 18:54 by fsphil