space manuevering tug was hst servicing mission given that what i described for the hst seemed to be the smt and given the mass amrgins on the discovery mission is tight enough that spacewalking has to be carefully constrained no edo pallets no spare suits no extra mmu s why not do this quick test goldins philosophjy of faster cheaper better build a real fast space tug to handle the re boost of the hst using clean cryo fuels and get it ready before the hst mission if nasa could build mercury in months they should be able to make an smt in how much would it need guidance package use a voyager spare thruster gear use h o or lox lh bus use a commsat grapple fixture use a stripped down canadarm comms package spare x band omni gear pat
