Voyager Mission Operations Status Report # 2014-05-02  Week Ending  May 2, 2014.

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset and a CCSTIM F/C on 05/01 [DOY 121/1755z].  The spacecraft received the commands.

 

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 04/28 [DOY 118/1532z].  The spacecraft received two of the seven commands sent.

 

Sequence Generation Operations

 

Complete sequence development of CCSL B164.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 95.1 hours of DSN scheduled support for Voyager 1 of which 72.4 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 1.  The third frame of GS-4 data was recorded on April 26.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 84.1 hours of DSN scheduled support for Voyager 2 of which 32.4 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.  Activities included an ASCAL on 4/29 (DOY 119) and a MAGROL on 5/2 (DOY 122).

 

Voyager 2 performance was nominal during this report period.  Activity included a PMPCAL on 4/29 (DOY 119) and turning on Gyros B&C on 4/29 (DOY 102).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

7.86

19.06

257.4

11

2

5.58

25.73

258.6

15

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

19,101,000,000

15,666,000,000

Distance from the Sun (Mi)

11,869,000,000

9,735,000,000

Distance from the Earth (Km)

18,999,000,000

15,621,000,000

Distance from the Earth (Mi)

11,806,000,000

9,707,000,000

Total Distance Traveled Since Launch (Km)

26,073,000,000

25,065,000,000

Total Distance Traveled Since Launch (Mi)

16,201,000,000

15,575,000,000

Velocity Relative to Sun  (Km/sec)

17.033

15.416

Velocity Relative to Sun  (Mi/hr)

38,101

34,484

Velocity Relative to Earth  (Km/sec)

25.045

22.869

Velocity Relative to Earth  (Mi/hr)

56,024

51,157

Round Trip Light Time (hh:mm:ss)

35:11:24

28:56:40