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--- projects:aldist [2008/10/18 13:28] – created laurenceb
+++ projects:aldist [2008/10/22 19:29] (current) – laurenceb
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-====== ALDIST  ======
+====== ALDIST (Advanced Long DuratIon Stratospheric Tetroon)  ======
 ===== Aims =====
@@ Line 7: / Line 8: @@
   - Investigate envelope heating
   - Record temperature, pressure, humidity data
-  - Demonstrate 434MHz radio communication over long (<300Km) range
+  - Demonstrate 434MHz radio communication over long (>300Km) range
   - Use solar power
   - Demonstrate cruising in polar stratospheric vortex
   - Experiment with altitude hold algorithms based on envelope temperature, payload mass, atmospheric density and other factors
+  - Reuse existing code and pcb designs as much as possible
 ===== Initial electronics/power concept =====
@@ Line 18: / Line 21: @@
+===== Initial design concept(s) =====
+ This design should be capable of cruising at 16 to 18Km for 5 days, enough for a circumnavigation in the polar stratospheric vortex.
+{{projects:first_design.png|}}
+===== Subsystem designs =====
+==== Ballast ====
+{{projects:ballast.png|}}
+==== ADS1112IDGST interfacing ====
+{{projects:sensor_interfacing.png|}}
+===== Links =====
+[[http://en.wikipedia.org/wiki/Tetrahedron|Wikipedia tetrahedron page]]
+[[http://www.piccard.info/gore_tetroon1.htm|some info on tetroons]]
+===== Suppliers =====
+[[http://www.sensortechnics.com|Sensortechnics]]
+[[http://www.dpie.com|Diamond point]]
+[[http://www.energyenv.co.uk/PowerfilmOEM.asp|UK powerfilm supplier]]