Differences

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--- projects:picoatlas:picoatlasix [2013/03/07 22:11] – jcoxon
+++ projects:picoatlas:picoatlasix [2013/03/08 07:15] (current) – [Future Ideas] jcoxon
@@ Line 43: / Line 43: @@
 ==== Flight Report ====
-Launch was very easy, winds were approximately 3mph, balloon was filled
+Launch was very easy, winds were approximately 3mph, balloon was filled indoors, measuring the ascent rate to get the correct volume of helium. We then took it out side and released it. Initially it climbed up to 400m and then started to descend back down to 200m altitude. It continued to bounce between 100 and 300m not able to ascend further and drifted south. We were able to follow it visually from the launch site for 20mins and then Steve followed it in the car. After an hour it suddenly started ascending again. Most likely this was due to an temperature inversion layer as the free lift was so little it wasn't able to break through this layer.
+Once ascending it rose up at approximately 0.8m/s and settled down to float for the night, in the morning it started rising again and found a higher float altitude during sunlight hours. Finally descent occurred at night where it gradually dropped and did not have enough lift to compensate for the cool temperatures. Last data was at 1000m altitude over Wales and most likely landing near to that point, nothing was heard in the morning but any station.
+Tracking was excellent for this flight, helped by the local flight path. Frequency stability was good due to polystyrene directly over the radio module which allowed people to leave their radios and dl-fldigi tuning for the whole flight.
 ==== Conclusions ====
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   * Simple ballast system to rescue if it does start to descend
   * Fix the uplink to the RFM22b as this would allow some fun with the slow floaters.
-  * Fly the APRS repeater if flight path has it going across Europe.
+  * Fly the APRS transmitter if flight path has it going across Europe.
   * How far could you fly in 33 hours...