https://github.com/jclaveau/ballon

Veille pour ballon atmo
https://github.com/jclaveau/ballon

Last synced: about 2 months ago
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Veille pour ballon atmo

• Host: GitHub
• URL: https://github.com/jclaveau/ballon
• Owner: jclaveau
• Created: 2020-04-18T09:20:21.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2020-04-21T10:45:13.000Z (about 5 years ago)
• Last Synced: 2025-02-13T19:41:14.711Z (4 months ago)
• Size: 26.4 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.md

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README

        
# ballon

Veille pour ballon atmo. Objectif : altitude max pour mesure du vent (prise au vent / vitesse)

TODO

+ Conception (fonctionnement / prix)

  + Ballon

    - Calculs force https://www.deleze.name/marcel/physique/aerostat/helium/index.html

    - Surface matériau https://www.toutcalculer.com/geometrie/volume-surface-sphere.php

    - vide https://github.com/jclaveau/ballon/issues/3

    - composit https://www.youtube.com/watch?v=tUrGZMB4WHY

    

      https://www.epoxyresolutions.com/technologies/materiaux-composites-definitions/

      

      Masse volumique = 2 à 2,1 kg/dm3

Contrainte rupture traction sens longitudinal = 12 dN/mm²

Contrainte rupture traction sens circonférentiel = 70 dN/mm²

Contrainte rupture en flexion = 10 dN/mm²

Module d’élasticité sens circonférentiel = 3500 daN/mm²

Module d’élasticité en flexion = 1500 dN/mm²

      choix refort https://www.youtube.com/watch?v=ioj1YBm6bJY

      fibre de verre vs carbone vs kevlar https://www.youtube.com/watch?v=KHXVf0SaJpA

      sphere carbone / economie max d'epoxy https://www.youtube.com/watch?v=g7pziJ8tUSY https://www.youtube.com/watch?v=VodfQcrXpxc

      epoxy moussante https://www.sf-composites.com/ProductCard/RES2080MB%25252F4/resine-epoxy-moussant-2080-5kg

      

      mylar pas cher https://www.cdiscount.com/maison/decoration-accessoires/ballon-en-feuille-ballons-mylar-de-18-pouces-pour/f-117634605-vol6437913247163.html

      

      design chambre a vide http://edge.rit.edu/edge/P14651/public/Miscellaneous/Design%20rules%20for%20vacuum%20chambers.pdf

  + Nacelle

    - Altimetre https://forum.arduino.cc/index.php?topic=205097.0

    - GPS https://lecafedugeek.fr/arduino-creer-votre-propre-compteur-gps/

    - thermometre https://create.arduino.cc/projecthub/projects/tags/thermometer

    - Radio 

      https://fr.wikipedia.org/wiki/Ultra_haute_fr%C3%A9quence#Utilisations

      https://inductivetwig.com/products/hamshield-mini

    - Alimentation https://www.asca.com/cellule-solaire-souple-transparente/

  

  + Bonus ? https://makezine.com/projects/ionic-thruster/

    http://everything.explained.today/Ion_thruster/

+ Reglementation

  - https://forums.futura-sciences.com/astronautique/70616-ballon-sonde.html