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Balloon envelope adapted to direct sunlight towards payload

  • US 8,833,696 B1
  • Filed: 09/28/2012
  • Issued: 09/16/2014
  • Est. Priority Date: 09/28/2012
  • Status: Active Grant
First Claim
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1. A computer-implemented method, comprising:

  • causing an airborne balloon to operate using a first mode, wherein the balloon comprises an envelope and a payload carried beneath the envelope, wherein the envelope has a shape adapted for directing sunlight towards the payload, and wherein operation in the first mode comprises;

    determining a position of the sun with respect to the balloon;

    moving the balloon to position a first exterior reflective portion of the balloon envelope so as to face the sun;

    directing sunlight from an exterior surface of an overhang formed in the balloon envelope and positioned on the first exterior reflective portion of the balloon envelope towards the payload; and

    collecting and storing solar energy in solar cells positioned in or above the payload.

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