Voyager Mission Operations Status Report # 2014-03-28  Week Ending  March 28, 2014.

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 03/27 [DOY 086/1400z].  The spacecraft received the command.

 

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 03/24 [DOY 083/1732z].  The spacecraft received two of the seven commands sent.

 

Sequence Generation Operations

 

Complete sequence development of CCSL A091.  Start sequence development of CCSL B164.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 52.9 hours of DSN scheduled support for Voyager 1 of which 42.5 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 March 27.  The third frame of GS-4 data was recorded on March 22.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 51.4 hours of DSN scheduled support for Voyager 2 of which 35.8 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 5.8 hours on 03/26 [DOY 085] due to rain at DSS-45 [DR C110083].

 

Science instrument performance was nominal for all activities during this period.  The EDR backlog is 1 day.

 

Flight System Performance

 

Voyager 1 performance was nominal during this report period.

 

Voyager 2 performance was nominal during this report period.

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

5.18

19.09

257.8

30.1

2

5.10

25.76

259.0

28.1

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

19,050,000,000

15,621,000,000

Distance from the Sun (Mi)

11,837,000,000

9,706,000,000

Distance from the Earth (Km)

19,005,000,000

15,648,000,000

Distance from the Earth (Mi)

11,809,000,000

9,723,000,000

Total Distance Traveled Since Launch (Km)

26,007,000,000

24,997,000,000

Total Distance Traveled Since Launch (Mi)

16,160,000,000

15,532,000,000

Velocity Relative to Sun  (Km/sec)

17.033

15.417

Velocity Relative to Sun  (Mi/hr)

38,103

34,487

Velocity Relative to Earth  (Km/sec)

19.501

23.249

Velocity Relative to Earth  (Mi/hr)

43,622

52,006

Round Trip Light Time (hh:mm:ss)

35:12:02

28:59:40