Payload Operations in Quiet Cruise: An Interplanetary Missions Dilemna - PowerPoint PPT Presentation

Loading...

PPT – Payload Operations in Quiet Cruise: An Interplanetary Missions Dilemna PowerPoint presentation | free to view - id: e2d68-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Payload Operations in Quiet Cruise: An Interplanetary Missions Dilemna

Description:

Science Operations. Payload Operations Replanning. Lessons Learned. Conclusions ... Lessons Learned (2) Weigh the Added-value of Science Requests ... – PowerPoint PPT presentation

Number of Views:22
Avg rating:3.0/5.0
Slides: 12
Provided by: elsamon
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Payload Operations in Quiet Cruise: An Interplanetary Missions Dilemna


1
Payload Operations in Quiet Cruise An
Interplanetary Missions Dilemna
European Space Agency - European Space Operations
Centre
  • P. Ferri, E. Montagnon, A. Hubault

SpaceOps 2006 - Roma
June 2006
2
Outline
  • The Rosetta Mission Baseline
  • The Rosetta In-flight Experience
  • Anomaly Management
  • Science Operations
  • Payload Operations Replanning
  • Lessons Learned
  • Conclusions

3
The Rosetta Mission Baseline
  • 3 months Instrument Commissioning near-Earth
  • 14 Checkout slots every 6 months
  • Passive Checkouts
  • Active Checkouts
  • Scientific operations around mission events

4
In-flight Experience Anomaly Management
CVP1 (3)
CVP2 (11)
Post-CVP 2005 (3)
19 extra Anomaly Management Slots in 2005/2006
Post-CVP End 2004 (7)
5
In-flight ExperienceScience Requests
  • 5 unplanned comet observation campaigns since
    launch (Linear, Machholz, Tempel-1, Catalina,
    Honda)

6
In-flight ExperiencePayload Operations
Replanning
  • Lack of detailed planning pre-launch due to
    extreme pressure of fixed launch date
  • Large replanning effort spent post-launch on the
    payload operations slots
  • Main reasons
  • Thermal Constraints
  • Signal Propagation Delay
  • Celestial Objects Geometry

7
Lessons Learned (1)
  • Keep the Spacecraft on a Low Resource Level
  • Most of the extra slots scheduled for anomaly
    management
  • 7 out of 40 anomalies discovered during extra
    slots
  • Keep payload operations to a minimum
  • The only way is a spacecraft mode preventing
    payload operations

8
Lessons Learned (2)
  • Weigh the Added-value of Science Requests
  • Added-value of request for mission
  • Impact on on-board resources
  • Impact on ground resources
  • Impact on mission plan
  • -gt Science operations are important for the
    mission, so do not reject unplanned science a
    priori

9
Lessons Learned (3)
  • Improve the Quality of the Long-term Planning
  • Collect payload requirements early
  • Take into account geometrical constraints in
    definition of payload slots
  • Define criteria for assigning operations to
    pre-defined slots

10
Lessons Learned (4)
  • Separate Anomaly Management from Normal
    Operations
  • Anomalies are unavoidable
  • Define dedicated Anomaly Management slots away
    from science operations slots
  • Consider commissioning in two parts
  • Baseline science in cruise
  • -gt Cruise operations allow early detection and
    resolution of anomalies and increase robustness
    of operations tools and procedures

11
Conclusions
  • The Rosetta Mission Baseline was assuming a quiet
    cruise in terms of payload operations
  • However in-flight experience shows that payload
    operations cannot be avoided if the spacecraft is
    in active mode
  • Cruise payload operations have benefits in terms
    of secondary science, but also for gaining
    experience and early anomaly resolution
  • Generic rules can be derived to minimise impact,
    that will be applied to upcoming Rosetta mission
    phases and future ESA Interplanetary Missions,
    such as BepiColombo
About PowerShow.com