Why are there so many configurations in the Technical Data Summary Section?
DIRECT is an incredibly flexible launch vehicle. We don’t want to lock into just one or two configurations; we want to present all of the options and allow NASA to choose the best for their needs. In reality, only one or two would ever be flown. We have also presented the options flying to a variety of orbits and payload configurations. We recommend the Jupiter-130 powered by SSME’s and the Jupiter-246 using RL-10-B2’s.
