July 28, 2010. S.P. Korolev RSC Energia,
Korolev, Moscow Region
S.P. Korolev Rocket & Space Corporation Energia Commission completed work for the cause analysis of termination of the Progress M-06M cargo vehicle/ International Space Station (ISS) Russian Segment (RS) rendezvous which occurred on July 2, 2010 at 20:20:42 Moscow time.
The Commission ascertained that the automatic rendezvous was terminated because of the command generation for the dynamic mode cancellation by a back-up rendezvous and berthing loop in teleoperation control mode (TOCM) of the Progress M-06M vehicle.
The command was generated because of the interference in the signal transmission channel through VHF radio channel of TOCM and the Operation button which was not released on the teleoperation control mode panel of the ISS Service Module Zvezda.
Based on the results of the Commission work in support of the docking of the next cargo vehicle Progress M-07M the start of which is planned to be performed in early September, to the ISS Russian Segment, onboard documentation has been updated, namely TOCM transmitter activation procedure on the ISS RS and TOCM panel status test have been clarified and also the control action has been developed for the onboard computer system of the Progress M-07M vehicle with regard to VHF receiver activation time.
For the subsequent cargo vehicles additional interlocking is envisaged in the indicated command generation channel.