Balloon-Launched Stratospheric Unmanned Glider Begins Flight Tests

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Balloon-Launched Stratospheric Unmanned Glider...
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UAVOS and Stratodynamics Aviation have announced that the two firms’ joint project, a stratospheric balloon-launched unmanned aerial vehicle (UAV) called HiDRON, has entered the flight test program stage. HiDRON is designed to collect high-altitude atmospheric data.

The first flight lasted 1.5 hours and reached an altitude of 6000 m. HiDRON’s vertical speed averaged 2 m/s during the return flight, much slower than typical payload parachutes which often reach speeds of 4 m/s or higher. The test program included: proving the stability of the primary radio link and the backup Iridium...

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