Martin Marietta Astronautics Group has appointed a resident Titan 4 solid rocket motor upgrade team at the Hercules Bacchus Works, headed by an aerospace executive with nearly 35 years of experience in space and missile systems.

William J. Sparkman, who has been involved in nearly 150 major space and ballistic launches, is the director of the team, which includes managers of engineering, product assurance, planning and contract materiel.Sparkman said the staff could grow to 17 during phases of the development but mostly will number 13 or 14 people. The resident group is responsible for managing the Hercules Aerospace subcontract and will serve as the program's direct contact with Hercules.