Voyager Mission Operations Status Report # 2014-04-18  Week Ending  April 18, 2014.

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 04/15 [DOY 105/2310z].  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 04/17 [DOY 107/2023z].  The spacecraft received three of the seven commands sent.

 

Sequence Generation Operations

 

Continue sequence development of CCSL B164.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 67.9 hours of DSN scheduled support for Voyager 1 of which 50.3 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 2.2 hours on 04/13 [DOY 103] due to FSPA failure to configure the DSS-65/55 array [DR M107888].

 

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 April 17.  The third frame of GS-4 data was recorded on April 12.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 58.8 hours of DSN scheduled support for Voyager 2 of which 22.5 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.  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

4.96

19.07

257.6

30.0

2

5.67

25.74

258.8

30.0

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

19,081,000,000

15,648,000,000

Distance from the Sun (Mi)

11,856,000,000

9,723,000,000

Distance from the Earth (Km)

18,998,000,000

15,632,000,000

Distance from the Earth (Mi)

11,805,000,000

9,713,000,000

Total Distance Traveled Since Launch (Km)

26,044,000,000

25,038,000,000

Total Distance Traveled Since Launch (Mi)

16,183,000,000

15,558,000,000

Velocity Relative to Sun  (Km/sec)

17.033

15.416

Velocity Relative to Sun  (Mi/hr)

38,101

34,485

Velocity Relative to Earth  (Km/sec)

22.332

22.418

Velocity Relative to Earth  (Mi/hr)

49,954

50,147

Round Trip Light Time (hh:mm:ss)

35:11:16

28:57:48