Voyager Mission Operations Status Report # 2014-05-30  Week Ending  May 30, 2014.

 

Command Transmission & Verification Operations

 

There were no command operations in support of Voyager 1 during the period.

 

Voyager 2 command operations consisted of the uplink of seven bracketed Command Loss Timer Resets sent on five-minute centers using 0.5 Hz steps on 05/27 [DOY 147/1627z].  The spacecraft received three of the seven commands sent.

 

Sequence Generation Operations

 

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 59.3 hours of DSN scheduled support for Voyager 1 of which 53.3 hours were large aperture coverage.  There were no real-time or schedule support changes made or significant outages during the period.

 

Science instrument performance was nominal for all activities during this period.  One frame of GS-4 data was recorded this week.  The second frame of GS-4 data was recorded on May 29.  The third frame of GS-4 data was recorded on May 24.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 58.6 hours of DSN scheduled support for Voyager 2 of which 33.7 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.

 

There were three significant outages during the period.  The first two outages were caused by a Red MASER at DSS-45 on consecutive days.  They were 3.8 hours on 05/24 [DOY144, DR C110228] and 8.3 hours on 05/25 [DOY 145, DR C110232].  The third outage of 0.5 hours on 05/27 [DOY 147] was caused by rain at DSS-43 [DR C110242].

 

Science instrument performance was nominal for all activities during this period.  The EDR backlog is 2 days.

 

 

Flight System Performance

 

Voyager 1 performance was nominal during this report period.  Activity included DTR Maintenance on 5/27 (DOY 147).

 

Voyager 2 performance was nominal during this report period.  Activities included a PMPCAL on 5/27 (DOY 147)  and turning on Gyros A & C on 5/29 (DOY 149).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

4.93

18.66

257.1

30.1

2

5.49

25.66

258.3

11.2

 

 

RANGE, VELOCITY AND ROUND TRIP LIGHT TIME AS OF THIS REPORT

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

19,142,000,000

15,702,000,000

Distance from the Sun (Mi)

11,895,000,000

9,757,000,000

Distance from the Earth (Km)

19,012,000,000

15,610,000,000

Distance from the Earth (Mi)

11,818,000,000

9,699,000,000

Total Distance Traveled Since Launch (Km)

26,141,000,000

25,123,000,000

Total Distance Traveled Since Launch (Mi)

16,243,000,000

15,611,000,000

Velocity Relative to Sun  (Km/sec)

17.032

15.415

Velocity Relative to Sun  (Mi/hr)

38,099

34,482

Velocity Relative to Earth  (Km/sec)

31.019

25.684

Velocity Relative to Earth  (Mi/hr)

69,388

57,453

Round Trip Light Time (hh:mm:ss)

35:13:42

28:55:24