Global Observer Crash Rattles Observers

By Graham Warwick graham_warwick@aviationweek.com, Michael Bruno michael_bruno@aviationweek.com .

AeroVironment’s GO-1 Global Observer hydrogen-powered high-altitude long-endurance (HALE) unmanned aircraft crashed at Edwards AFB, Calif., on April 1.

The aircraft was 18 hr. into its ninth envelope-expansion test flight.

The cause is being investigated. A second aircraft is almost ...

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