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DLR HAP-alpha

24/07/2025News:
HAP-alpha will fly at around 20 kilometres in the lower stratosphere.

DLR completes vibration test for solar HAP-alpha aircraft

The stratospheric platform project has passed vibration testing in Cochstedt as DLR now works towards future sensor trials and 2026 flight readiness.

21/04/2021Press Release:
Lightweight construction of HAP Alpha. (Photo: DLR)
DLR develops an unmanned stratospheric aircraft