re: more info
The big Deltas do this, too, lighting only six of nine SRBs at launch, but the other three don't light until almost a minute or so into the flight, and after the first six burn out.
Space/Science » in reply to more info
The big Deltas do this, too, lighting only six of nine SRBs at launch, but the other three don't light until almost a minute or so into the flight, and after the first six burn out.