Philae_Overview - Politecnico di Milano
Download
Report
Transcript Philae_Overview - Politecnico di Milano
4th Philae
Post-Launch
Workshop
Philae Status and News
Venezia; 30st of March 2009
Overview
Philae In-flight Activities
Ground Activities
LCC Funding Situation
2
4th Post Launch Philae Science WS, Venezia, March 2009
Flight Events
In 2008/09 Philae was switched on during 6 operational blocks:
Šteins Rehearsal
Active Checkout PC8
Šteins Flyby
COSAC/CIVA Contingency Slot
Passive Checkout PC9
Thermal Characterization
(Apr 2008)
(July 2008)
(September 2008)
(November 2008)
(January 2009)
(February 2009)
Operations Activities successful
Problems / Areas of concern
(mostly known problems)
Increased secondary battery discharge
Temperature gradients inside Lander higher than estimated
DPU1 booting problem at low temperatures
ESS converter temperatures
Certain deficiencies in CDMS S/W 6.98 (compared to 7.0)
COSAC HV problems with new SW not understood
3
4th Post Launch Philae Science WS, Venezia, March 2009
Philae In-flight Operations (I)
Šteins Flyby Rehearsal
Test of Solar generator (successful)
Shadowing affects lead to “initial confusion”…
Active Payload Checkout #8 (July 2008)
Maintenance:
New operations:
Upload of CDMS S/W 6.98
Problems:
CDMS
COSAC
CIVA
APX
4
4th Post Launch Philae Science WS, Venezia, March 2009
Status of CDMS S/W
Version 6.98 successfully uploaded in PC8
It was recommended by the last LOWG#12 to upload
final SW version 8.0 prior to DSH (deep space hibernation)
in PC12
Workshops for SDL and LTS established; inputs to
CDMS SW still pending; due end of April
(next SDL/LTS meetings 27/28-April 2009)
Several mission critical aspects need to be taken care of
CDMS SW delivery planned for September 2009
Verification period September to November 2009
SW Upload in April 2010
5
4th Post Launch Philae Science WS, Venezia, March 2009
Philae In-flight Operations (II)
Šteins Flyby
ROMAP, SESAME and MUPUS operational
ROMAP detects no magnetic signatures due to asteroid
SESAME and MUPUS perform successfully calibration
COSAC/CIVA Contingency Slot (CNT2)
“old” COSAC S/W uploaded
COSAC seems to work nominal (again) with pre-PC#8 SW
COSAC H/W apparently ok
Problem not understood
planned CIVA SW downgrade abandoned
CIVA worked well (no dummy images sent)
Problem during PC#8 not understood
6
4th Post Launch Philae Science WS, Venezia, March 2009
Philae In-flight Operations (III)
Passive Checkout PC#9
Standard Procedure
Add. APXS measurement
Thermal Characterization (THC2)
Contribution to Lander Thermal Characterization
Calibration measurements for SESAME and MUPUS
7
4th Post Launch Philae Science WS, Venezia, March 2009
Ground Activities
GRM refinement
Open work for ADS: EQM model exchange;
FM01 model implementation planned to be finished by May 2009
GRM is used for all Flight ops preparation !!
Development tests for next CDMS S/W v8.0
Development tests ongoing;
SW v8.0 verification period expected for Sep - Nov 2009
LCC Status
Upgrade of ESA interface (PDOP) ongoing
DAVIS (upgrade development delayed, but continues)
SCrOP, Annex G
The document provides an overview on the status of all Philae Cruise Phase
requirements
Last version V1.5, 11th of December 2008, distributed to RSOC/RMOC and
Lander Team
Lander Software Simulator
upgrade delayed due to priority on CDMS SW v8.0 development, but
continues
8
4th Post Launch Philae Science WS, Venezia, March 2009
LCC Funding Situation
New Project plan, based on results of independent review
from September 2007 now agreed
Shared LCC funding between DLR Agency and DLR R&D
New staff in the LCC team
Jens Biele (Payload Management)
Ed Trollope (Lander Simulator, Ops preparation (Šteins, Lutetia))
Christian Krause (RLGS Support)
Koen Geurts (GRM, Ops preparation)
Hans-Herbert Fischer (LCCS support, (SESAME)
Franziska Lenski (QA at MUSC)
9
4th Post Launch Philae Science WS, Venezia, March 2009