ISS Crew Unpacks New Progress, Prepares for Reboost

Commander Pavel Vinogradov and Flight Engineer Jeff Williams have begun unloading supplies from the new Progress 21. The Russian cargo craft docked to the station Wednesday, April 26.

An older Progress vehicle continues to supply the station with air as needed.

That Progress is being loaded with trash and readied for undocking in mid-June to burn up in the Earth’s atmosphere.

The station is scheduled for an engine firing, or reboost, which will raise its orbit on Thursday, May 4.

Related information

Progress Cargo Vehicle Procedures Progress Cargo Vehicle Transfer Operations, Part 1, Mission Operations Directorate, 10 August 2000 [English – Acrobat] [Russian – Acrobat]

Progress Cargo Vehicle Transfer Operations, Part 2, Appendix 1, Mission Operations Directorate, 10 August 2000 [English – Acrobat] [Russian – Acrobat]

According to the introduction to these documents “this book is intended for performing cargo transfer operations in Progress and on stowing equipment in SM and Progress.” These documents contain diagrams and detailed procedures for the transfer of times from the Progress Vehicle currently docked with the ISS.