Differences

This shows you the differences between two versions of the page.

--- en:abl [2013/09/24 14:41] – old revision restored (2013/09/24 16:36) kaklik
+++ en:abl [Unknown date] (current) – external edit (Unknown date) 127.0.0.1
@@ Line 10: / Line 10: @@
 ===== Ground discharge box =====
+{{ :cs:designs:meteo:abl01a_ground_box.jpg?direct&600 |}}
 The ground balloon network station would consist of compact box containing technology needed to discharge the balloon sonde. The device must be able to withstand (in order of several years) the standby mode and wait for the command to release the sonde.
@@ Line 84: / Line 86: @@
 It would be then sufficient to dry the hydrogen produced by this method by cartridge with silicagel.
-Another option is to decompose the [[http://en.wikipedia.org/wiki/Sodium_borohydride|Sodium_borohydride]] by a catalyst.
+Experiments with this metod showed difficulty in obtaining the galium back in order for it to be re-used.
+**Ferrosilicon method** makes use of a reaction between the sodium hydroxide, water and a [[https://en.wikipedia.org/wiki/Ferrosilicon|ferrosilicon]].
+Another option is a **catalysed decomposition** of the [[http://en.wikipedia.org/wiki/Sodium_borohydride|Sodium_borohydride]].
+In all cases, the volume of the carrier gas should be optimised with respect to required lift and the rate of climb.
 === Firmware ===
@@ Line 130: / Line 138: @@
 The GPS must by chosen to function correctly at higher altitudes as well.((Limited by the [[http://en.wikipedia.org/wiki/CoCom#Legacy|CoCom]] directive)).
+== Transmitter ==
+Integrated transmitters.
+  * [[http://www.ti.com/ww/en/analog/sub_1_GHz_low_power_rf_ic/index.shtml?DCMP=rfvalueline&HQS=Other+OT+rfvalueline|CC115L]]
 === Power supply during the flight ===
@@ Line 135: / Line 150: @@
   * [[http://en.wikipedia.org/wiki/Lithium_battery|Lithium battery]] (does not generate heat, minimum operating temperature is -60°C)
   * Magnesium battery (generates heat to keep the electronics warm)
-  * [[http://en.wikipedia.org/wiki/Silver-oxide_battery|Stříbro-oxidový článek]] (withstands lower operating temperatures and is environmentally friendly
+  * [[http://en.wikipedia.org/wiki/Silver-oxide_battery|Silver-oxide battery]] (withstands lower operating temperatures and is environmentally friendly
-  * Ideal for use would be [[https://www.youtube.com/watch?feature=player_embedded&v=OtM6XJlynkk|supercapacitors]]
+  * An ideal option would be the use of [[https://www.youtube.com/watch?feature=player_embedded&v=OtM6XJlynkk|supercapacitors]]
 The solution to the problem of low temperature at higher altitudes could involve the preheating of the balloon at startup.
@@ Line 194: / Line 209: @@
+==== Launch Planning ====
+The launch of the balloons must be planned automatically with regard to the effectiveness of the measurement and the air traffic safety as well.
+=== Aviation maps ===
+  * [[http://skyvector.com/|SkyVector]]
+  * [[http://openaviationmap.org/|Open Aviation Map]]
+  * [[http://lis.rlp.cz/ais_data/aip/data/valid/e6-3.pdf|Aeronautical information service]] - AIP chapter ENR 6.
+Other maps are mostly scanned versions of originally paper aviation maps and so are not suitable for automatic planning.
+===== Documentation =====
+[[http://www.mlab.cz/Designs/Measuring_instruments/ABL01A/DOC/ABL01A.cs.pdf|The project's summary technical report]]
+==== Technical documentation ====
+The project's technical documentation is saved in SVN repository at MLAB: http://svn.mlab.cz/svnmlab/Designs/Measuring_instruments/ABL01A/
+  svn://svn.mlab.cz/MLAB/Designs/Measuring_instruments/ABL01A/
+==== Project management ====
+For tasks management and supervision of their implementation we use [[http://www.mlab.cz/redmine/| Redmine]].
+Documents and presentations concerning project management are stored here:
+  svn co https://lynx1.felk.cvut.cz/svn-students/pto/pto-13138-1 svnPTO
+==== Project presentations ====
+  - [[http://prezi.com/bnhig7zmyoin/automaticky-vypousteny-meteobalon/|Introduction]]
+  - [[http://prezi.com/8hxyotflpfzt/2-prezentace-abl01a/|First results]]
+  - [[http://prezi.com/3d4t973s-tk0/iro-automaticky-vypoustec-meteobalonu/|Experimental working prototype]]
+=== Videos ===
+  * [[http://youtu.be/yZOg_d113f8|Test of the prototype]]
+=== Photos ===
+  * [[https://picasaweb.google.com/109626411951658757207/AutovypoustecMeteobalonuABL01A?noredirect=1|Prototype construction and testing ]]
+===== Implementation means =====
+==== People ====
+The project is carried out by the team of several ČVUT students from Department of Measurement and Department of Cybernetics.
+  * [[https://usermap.cvut.cz/profile/pomiceva/|Bc. Eva Pomíchalová]]  -  Air and Space Systems
+  * [[https://usermap.cvut.cz/profile/kakonjak/|Bc. Jakub Kákona]] -  Air and Space Systems
+  * [[https://usermap.cvut.cz/profile/poskozby/|Bc. Zbyněk Poskočil]] - Sensors and measurement
+  * [[https://usermap.cvut.cz/profile/hanuson1/|Bc. Ondřej Hanuš]] -  Air and Space Systems
+  * [[https://usermap.cvut.cz/profile/jichapav/|Bc. Pavel Jícha]] - Cybernetics and Robotics
+==== Technical support ====
+Most parts of the project were provided by [[http://www.ust.cz/|Universal Scientific Technologies s.r.o.]] {{ :logo_ust.png?nolink|Universal Scientific Technologies s.r.o.}}
+Suppliers of the construction equipment:
+  * [[http://macgyver.sh.cvut.cz/|MacGyver – bastlíři SH]]
+  * [[http://aerospace.fsik.cvut.cz/?f_lng=en|Department of Aerospace Engineering]]
+===== References =====
+  * [[http://portal.chmi.cz/files/portal/docs/meteo/oa/sondaz_PTU_vitr.html|ČHMÚ measurements]].
+==== Similar projects ====
+  - http://projecthorus.org/ http://blog.czanso.com/ http://chab.chytry.info/
+  - http://www.airshipclub.com/folie.php
+==== TODO ====
+  * A sounding rocket could be a future improvement of the project.