Differences

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--- ideas:satellite [2007/04/03 21:07] – rocketboy
+++ ideas:satellite [2008/07/19 23:33] (current) – external edit 127.0.0.1
@@ Line 4: / Line 4: @@
   * Maintain position around a zone of gps co-ordinates, could be used as a system of emergency communications e.g. disaster zone, within 2 or 3 hours you could have it up and it would cover a fair area for perhaps photography or communications
-  * There should be little air movement above the jet stream, so it won't drift (confirmation?)
+  * There should be little air movement above the jet stream, so it won't drift (confirmation? See Bellow)
   * Perhaps use compressed air as propulsion to maintain position (though would be a limiting fuel)
-  ** what about a point/ring ionizer as a soure of propulsion (driven form solar panels)
+       * what about a point/ring ionizer as a soure of propulsion (driven form solar panels)
+       * High Speed ducted fans (A nice project would be to measure thurst in reduced pressure chamber)
   * obviously solar panels - due to the height they would be far more efficient then on the surface
   * Perhaps use normal balloon to provide the lift to get the payload/satellite into position
+       * Or, a helium balloon cluster that is disposed after reaching certain altitude.
   * Due to the gradual lost of He from the standard balloons perhaps use a metallic balloon or have a helium canister onboard to refill to maintain altitude. The other alternative is to have ballast (such as water of compressed air) which can then be vented/dropped to maintain altitude
+       * Possible to change the ballon shape/size with tensioners to reduce volume/boyancy?
+----
++ About JetStreams [[http://stuff.mit.edu/people/stransky/jetstream/|External Link]]
++ Jet Streams Forecast
+MIT - [[http://paoc.mit.edu/synoptic/|External Link]]
+California Weather (includes global data) - [[http://squall.sfsu.edu/crws/jetstream.html|External Link]]