Ariane 6 Completes ESAs Long-Duration Static-Fire Test
On November 23, the European Space Agency (ESA) conducted a crucial long-duration firing test of an Ariane 6 prototype, marking one of the final assessments before determining the rocket inaugural launch date.
The test involved igniting the Vulcain 2.1 engine in the core stage of the Ariane 6 test model at the launch pad in Kourou, French Guiana, around 3:44 p.m. Eastern. However, the countdown faced a 45-minute delay when a small anomaly in the transient threshold pressure was detected at 2 minutes and 42 seconds into the countdown.
Scheduled to last 470 seconds, simulating a full burn of the core stage during an actual launch, the test proceeded with a shutdown at the anticipated time. Despite a perceived change in the engine performance in the final minute, ESA later confirmed the successful completion of the seven-minute full firing.
In a statement, ESA stated that the test was a significant milestone for Ariane 6, emphasizing the meticulous preparation and hard work of the teams from ArianeGroup, CNES, and ESA, with ArianeGroup serving as the prime contractor and CNES as the French space agency. Josef Aschbacher, director general of ESA, expressed satisfaction, stating, "We are back on track towards resecuring Europe autonomous access to space."
The full-duration static-fire test is regarded as one of the last assessments before ESA announces the launch period for the inaugural Ariane 6 flight. Aschbacher mentioned during a press briefing on November 6 that, depending on the test outcome, he would be in a position to disclose the launch date. Another hot-fire test of the Ariane 6 upper stage, assessing its performance in degraded conditions, is scheduled for December.
Martin Sion, chief executive of ArianeGroup, affirmed that while there are a few additional tests to demonstrate fault tolerance, and certain logistical steps remain, the core stage and upper stage of Ariane 6 have undergone all necessary testing to be prepared for the inaugural flight.
