![]() ![]() ![]() The two-way communications had been lost for a total of about 45 minutes. After the waive off of deploy, the crew changed the shuttle's S-Band communications system to a lower frequency and restored two-way communications with the ground. CDT deploy when they did not receive a "go" from MCC as called for in preflight plans made for just such an occurrence. Flight controllers could receive telemetry and voice communications from Discovery, however the crew could not receive communications from the ground. The first attempt to deploy ACTS was delayed by the crew when two-way communications were lost with Mission Control Center (MCC) about 30 minutes before the deploy time. ![]() Its Transfer Orbit Stage (TOS) upper stage fired on time 45 minutes after deployment and boosted the satellite to geosynchronous orbit on the first day of the mission. This satellite served as a test bed for advanced experimental communications satellite concepts and technology. The Advanced Communications Technology Satellite was deployed on flight day 1. Limited Duration space environment Candidate materials Exposure (LDCE)įrank L. Investigation into Polymer Membrane Processing (IPMP) Interstellar Medium Absorption Profile Spectrograph (IMAPS) High Resolution Shuttle Glow Spectroscopy (HRSGS-A) Chromosome and Plant Cell Division in Space (CHROMEX) ![]()
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