Bellatrix posts 70‑bar valve test results
Bellatrix Aerospace shared a high‑pressure valve test at 70 bar with repeatable opening at 6.2 ms and closing at 4.2 ms, claiming durability over thousands of firings for satellite propulsion maneuvers like collision avoidance announced. Millisecond actuation and high repeatability matter for pulsed‑thrust attitude control and rapid de‑orbiting sequences.
Bellatrix's Rudra and Arka payloads were space‑qualified aboard ISRO's PSLV C‑58 on January 1, 2024. (bellatrix.aero) The company detailed an indigenously developed "fast‑acting solenoid valve" as part of the RUDRA 0.3 propulsion package in its IAC paper describing the on‑orbit demonstration hardware. (dl.iafastro.directory) Heritage thruster valve datasheets from Moog show many space‑rated models with maximum open/close response times in the 10–30 ms range, providing a concrete baseline for comparing new millisecond‑class actuators. (moog.com) Commercial miniature valve vendors advertise sub‑millisecond actuation (down to ~0.5 ms) for ultra‑fast valves used in microthrusters and cold‑gas systems, establishing that sub‑ms switching is an existing engineering envelope. (theleeco.com) Pulsed‑thrust research from Georgia Tech identifies valve response and feedline delays as primary limits on the minimum impulse bit, and NASA's Conjunction Assessment handbook highlights the need for fast maneuver execution in time‑critical collision avoidance. (seitzman.gatech.edu) Bellatrix's updates report firing campaigns of 100+ actuations in multi‑day test windows and multiple in‑orbit Rudra firings on POEM missions (including POEM‑4 activity in January 2025). (bellatrix.aero) Coverage after the PSLV flights notes Bellatrix's stated plans to commercialize its propulsion systems and scale production with a factory‑level facility, per Economic Times reporting. (economictimes.indiatimes.com)
