Thunder-RS Engine
In Development
Deep Blue Aerospace

Overview
Up-rated, ~130-tonne-class kerosene-liquid oxygen engine in Deep Blue's Leiting (Thunder) family, using needle-valve injection and deep throttling, developed to power the Nebula-2 first stage with planned reuse.
Completed its first 100-second full-duration static fire around August 21-22, 2026, reaching 1,297.5 kN (~132.3 tonnes) of thrust after earlier, shorter test fires - a key qualification milestone ahead of Nebula-2's debut.