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StatusOngoing
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Status date2011-11-16
Objectives
Improvement of the electrical architecture of the Eurostar 3000 platform:
- Study the benefit of a decentralized TM/TC architecture of the communication module,
- Improve the design and performances of the power distribution function,
- Reduce the schedule and non recurring costs of the harness definition and manufacturing.
Challenges
The Key issues are mainly to improve the power performances and the harness production flow from the customization phase to the manufacturing phase.
Benefits
Benefits are mainly:
- The extension of the power capability by around 200W for a given solar array configuration (therefore enabling savings in mass and costs or accommodation of extra payload components)
- The reduction by three months of the non recurrent activities and by two months of the recurrent activities for the harness production cycle.
Features
The project focuses on both system and subsystem activities and on the development and qualification of electronics as part of the power distribution function:
- Preliminary assessment of the design and performances of a TM/TC decentralized unit,
- Design and qualification of an improved Power distribution Unit to make production and accommodation easier,
- Optimization of the charge by diversion principle with the qualification of hardware and the validation of software modifications,
- Definition and validation of generic files and tools for the harness production process.
Plan
The project was carried out within three years with the following milestones:
| KO | April 2006 |
| BDR | June 2006 |
| MTR | September 2006 |
| FR | May 2009 |
Current status
Achievements:
| Qualification of Power Distribution Unit | |
Stacked PDUs click for larger image |
PDU inside view click for larger image |
| The PDU MK2 unit is currently used on five commercial programmes. | |
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Qualification of Relay Bracket RB322 |
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RB322 outside view click for larger image |
RB322 inside view click for larger image |
| The RB322 unit is currently used on seven commercial programmes for the implementation of the optimised charge by diversion. | |
- Qualification of the Power chain modifications (HW and SW) for the optimization of the charge by diversion.
The optimised diversion is currently implemented on seven commercial programmes, in production with various configurations:
- Mono Power Supply Regulator (PSR) (1 project)
- Bi PSR (3 projects)
- Bi PSR with plasma propulsion (3 projects)
- Development of a harness mechanical and electrical data base.