An unmanned glider has been launched from a stratospheric balloon at 111,434 ft. altitude on a scientific flight to test an airglow monitor (AMON). The Sept. 1 night flight by the HiDRON glider, developed by Stratodynamics Aviation and UAVOS, beat its previous highest release altitude of 98,450 ft., achieved on Aug. 2 on the first of two AMON test flights. For the second flight, the HiDRON was released from a Canadian Space Agency (CSA) scientific gondola suspended beneath a stratospheric ...


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