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Improvement of ADE4 performance and adaptability to Eurostar 3000 SX spacecraft and cost saving in order to offer an enhanced competitiveness.
In the frame of Eurostar 3000 SX with the objective to save mass and recurring cost, trade-off performed at platform level have shown than it is possible to delete two boards in each ADE4 equipment.
Because a new arrangement of MPIU functions, PFIE board can be deleted. According to these evolutions ADE4 can be reduced to a unit including 5 modules.
On Eurostar 3000 two ADE4 with 6 modules each are implemented on the spacecraft. The need for an Eurostar 3000SX platform becomes two ADE4 with only 5 modules each.
According to the above status, a efficient way for cost and mass saving is to merge ADE4 Nominal and redundant equipment in a single box.(ADE5)
Savings are estimated at unit level to about 4,6 Kg for the mass and 15% for recurring cost. But other impact as mass saving for the harness is also significant.
ADE5 EQM is composed of 10 modules. The assembly is a mix of boards coming from various ADE 4 development stage but each board is fully representative of the future Eurostar 3000 SX flight units.
As reported above channel A of ADE5 consists of boards manufactured with the last Flight Model standard which have been never submitted to mechanical environment qualification tests. The various modules are coming from EQM4 only submitted to ESD Tests (WPC NG & SADE NG) and the others modules (MDE 10Hz, CPSE, CV BC/TC) will be produced in the frame of this contract.
At the opposite channel B included old generation boards which have been already submitted to mechanical environmental qualification campaign.
In conclusion the ADE5 channel A is fully representative of future ADE5 flight standard and therefore qualification criteria is linked to “EQM channel A” results.
As stated above the main objective is to improve ADE4 performance and adaptability to Eurostar 3000 SX spacecraft and cost saving in order to offer an enhanced competitiveness.
Savings estimated at unit level to about 4,6 Kg for the mass (harness not included) and 15% for recurring cost.
Therefore with ADE5 evolution it can be stated that mass and cost saving will for sure enhance competitiveness of Eurostar 3000 SX spacecraft against other PFs available on the market.
As stated above ADE5 is formed of two ADE4 without PFIE functionality. ADE5/ADE4 equipment achieves, through the MIL-STD-1553B system bus, the interface between the central Spacecraft Computer Unit (SCU) and most satellite actuators and a part of the platform dedicated Telemetries/Telecommands (TM/TC).
It also contains electronic regulated heater channels. The ADE5/ADE4 performs, under the system bus control, the following functions implemented on various boards:
Development plan logic is as follows:
KO => Presentation of activities to be performed
BDR => Delivery and review of BDR data package
MTR/TRR => Delivery and review of MTR/TRR data package
FR => Delivery & review of Final Review data package
Currently the project is finished. Final Review already held. Results and in particular NCRs raised during qualification reviewed. In general ADE5 qualification is considered successful. Last remaining open actions, have been closed as follows: