Arianespace to flight-test BULL’s Horn deorbit sail on Ariane 6 dual-launch

Arianespace and Japan’s BULL will flight-test the Horn passive mitigation device on an Ariane 6 in a dual-launch configuration, advancing work under a 2024 MoU on space-debris mitigation. The trial is the next step toward integrating sail-based disposal hardware on Ariane 6 missions.

Discovered 2025-09-30T03:39:54.843547-07:00 | 2025-09-30T03:39:54.843547-07:00

Briefing

What Hype is tracking

The test moves the 2024 MoU from study to hardware validation: Arianespace and BULL will fly the Horn passive mitigation device on an Ariane 6 dual-launch, a concrete step toward deploying in-orbit disposal measures.
Integrating PMD hardware affects launcher accommodation and supply chains as Ariane 6 transitions toward routine operations — see recent shifts in Ariane 6 cadence and supplier awards for context (supply-chain workstreams and industrial ramp-up).
The trial reinforces Europe’s push for sustainable launch operations as Ariane 6 increases paid missions and seeks to compete on both reliability and environmental compliance (see recent Ariane 6 flight activity and contractor awards).

Reported By

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