Rocket Lab Neutron Tank Ruptures in Pressure Test, First-Flight Timeline Under Review
The hydrostatic trial in Maryland damaged a first-stage tank during qualification work to verify structural margins.
Overview
- Rocket Lab confirmed a Stage 1 Neutron tank ruptured on Jan. 21 during a hydrostatic pressure test at its Middle River, Maryland facility.
- There was no significant damage to test structures or facilities, and a replacement Stage 1 tank is already in production.
- The company is analyzing test data to assess schedule impact and intends to provide a timeline update during its February Q4 earnings call.
- Neutron’s debut had already slipped into 2026 after pad completion at Wallops Island in August 2025 and continued development milestones.
- Industry observers earlier noted a collapsed tank outside the Middle River site, which preceded Rocket Lab’s statement on the test outcome.