Editor’s Note: The test was completed on Thursday at the Mojave Air and Space Port in California. In an update sent out the same day, Virgin Orbit said there would be multiple dress rehearsals:
In the coming days, our focus will return to the ground as we roll up our sleeves and dive into wet dress rehearsals — this time, filling our tanks with our actual oxidizer (LOX) instead of LN2 [liquid nitrogen]. The first rehearsal will be a remote operation, where we’ll complete all pre-launch procedures short of having personnel approach the aircraft. Then, once we’re comfortable with the behavior of LOX in our system, we’ll get fully dressed, so to speak — conducting an end-to-end rehearsal that includes every operation from the beginning of the day to just before takeoff.
So we’re now staring right down the barrel at our Launch Demo.