Japan's H3 Rocket Soars on Return-to-Flight Mission

Japan's H3 rocket successfully launched six small satellites into orbit on its return-to-flight mission, lifting off from the Tanegashima Space Center on June 11. This flight tested a new configuration, the H3-30S, featuring three LE-9 engines in its first stage and no solid rocket boosters.

Among the six smallsats was BRO-22 from France's Unseenlabs, intended for maritime tracking. This marked the first non-Japanese satellite launched on the H3, facilitated by Japanese integrator Space BD, underscoring a strategic partnership between Japan and France.

The mission's success is particularly significant following the H3's December failure, which was attributed to payload fairing separation shocks damaging the upper stage. An investigation by JAXA pinpointed unusual shocks during fairing separation as the likely cause of the previous mishap.

This successful launch clears the path for upcoming critical missions, including the second HTV-X cargo delivery to the International Space Station and the Martian Moons eXploration (MMX) mission, scheduled for late this year.