Overview
- Isar Aerospace lifted its two‑stage Spectrum rocket from Andøya Spaceport on Saturday, Sept. 5, 2026, marking the company’s second flight attempt after a March 2025 failure.
- The mission carried five customer cubesats plus a non‑deployable experiment and was explicitly framed as a vehicle qualification to demonstrate pitch/roll control, stage separation, and second‑stage performance on a Sun‑synchronous trajectory.
- News reports confirm liftoff but do not uniformly verify orbital insertion, so whether the payloads reached the intended orbit remained unconfirmed in available coverage.
- Isar addressed the March 30, 2025 anomaly—an unintended vent‑valve opening that led to loss of attitude control—by upgrading software, increasing flight margins, and completing 30‑second integrated static‑fire tests for both stages before this launch.
- A successful orbital insertion would be a major step toward independent European launch capacity for small and medium satellites, with Spectrum using nine Aquila first‑stage engines burning propane and liquid oxygen and rated to lift about 700 kg to SSO from Andøya.