Pathfinder Plus Exceeds 80,000 Ft.;
The Pathfinder Plus solar-powered drone has set a new absolute record for propeller aircraft by exceeding 80,000-ft. altitude and staying above 70,000 ft. for more than 3 hr. The altitude broke the prior record by 9,000 ft., which was set by Pathfinder last year. The Mach 3+ Lockheed SR-71 is the...
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