Dawn Damage Not Expected to Delay Mission
Astrotech Space Operations Facility
Delta II 7925-H
July 7, 2007
4:09:31 - 4:36:22 p.m. EDT
NASA is investigating a minor mishap affecting the Dawn spacecraft. On June 11, during a procedure to prepare the spacecraft for spin-balance testing, the back of a solar array panel was slightly damaged by a technician's tool. No solar cells were broken. The necessary minor repairs will be made this weekend. There is no impact to the launch date of July 7.
Loading of xenon for the ion propulsion system was completed last week. Hydrazine, used for spacecraft control and maneuvering, was loaded aboard June 10. The spacecraft was then weighed and placed on a spin table for a series of spin tests that are currently under way. Dawn will be mated to its associated upper-stage booster on June 21 and transported to Pad 17-B for mating to the Delta II on June 26.
At Pad 17-B, the operations to attach the Delta II solid rocket boosters to the first stage are complete. The second stage is planned to be hoisted atop the first stage on Friday.