Quick update on ATV-4: Successful reboost to the ISS on 31 August; final O2 transfer to station on 5 September and, today, air transfer today and ATV configured for the Soyuz thruster test.

Japanese HTV-4 unmanned cargo spacecraft, backdropped against a land mass on Earth, following its unberthing but just prior to its release from the orbital outpost on 4 September 2013. Credit: NASA

Japanese HTV-4 unmanned cargo spacecraft, backdropped against a land mass on Earth, following its unberthing but just prior to its release from the orbital outpost on 4 September 2013. Credit: NASA

 

Note as always: All dates/timings below are forecast only and are subject to change as this is a continuing, dynamic mission. Time below indicated in UTC.

GENERAL STATUS

  • Successful reboost on 31 August and final O2 transfer on 05 Sept
  • ATV nominal

ATV STATUS

  • Attached dormant mode,

ATV-CC STATUS and ATV GROUND SEGMENT

  • All ATV-CC systems nominal
  • ATV monitoring and routine attached activities

CARGO and FUEL STATUS

  • Dry cargo : 2 489kg /100% transferred
  • Accepted trash : 1234kg
  • Accepted liquid waste : 328 l
  • Water : 564 Kg /100% transferred
  • Air (2 tanks) : 33.4kg available (transferred 33kg/50%)
  • Oxygen (1 tank): 33.3kg/100% transferred
  • Propellant : used 1177kg, available for ISS supports : 2 308kg
  • Refuelling propellant : initial 860kg, 100% transferred

EXECUTED OPERATIONS

  • 30 August : Air transfer (around 14kg)
  • 31 August : Reboost 0.48m/s
  • 03 September: ATV-05  ATVCC-Bremen  SVT-1 successful
  • 04 September: Liquid waste transfer
  • 05 September: O2 final transfer (fan ON)
  • 05 September: Liquid waste transfer
  • 06 September: ATV in configuration for Soyuz thruster test

NEXT OPERATIONS. MAIN ACTIVITIES

  • 06 September: Air transfer
  • 10 September: 34S undocking
  • 12 September: Reboost  (bu 14Sept) 0.47m/s
  • 13 September: Air transfer
  • 19 September: Air transfer
  • 19 September: Liquid waste transfer tbc
  • 22 September: Orbital D1 berthing
  • 25 September: ISS attitude change
  • 26 September: 36 docking (bu 27/28).  ISS attitude change
  • 02 October: Reboost (placeholder. 2.34m/s, bu 04Oct)
  • 22 October: Orbital D1 unberthing