SCA combines the Onboard Computer (OBC) and Power Control/Distri bution Unit (PCDU) functions and modules in one box resp. unit

  • Essential resource saving and optimization leading to smart, compact design
    • Powerful, modular and highly integrated avionics solution for small /medium satellite platforms
    • SCA architecture open for a full set of AOCS actuators/sensors for 3-axis controlled satellite platforms

 core avionics

SCA is a high-reliable, high-performance (~74 MIPS) and compact avionics unit for

  • Communication and data handling (LEON3FT) in SCOC3
  • Attitude & Orbit control
  • Thermal control
  • HK/Status acquisition, monitoring, storage
  • Power generation, storage and distr.
  • FDIR handling (partially autonomous)

Further features are:

  • CAN bus as inter./extern. communication bus
  • Central DC/CD for SCA internal supply; distributed POL
  • PCDE functions split in SAR and PDU Modules; one redundant controller handles the PCDE functions
  • OBC functions split in SPC and IO modules
  • SPC Modules are redundant with cross-coupling
  • IO Modules are independent and contain its independent controller and POL supplies

  FlexSat SCA Blockdiagram

---

The project work is/was carried out under a programme of and funded by the DLR (German Aerospace Center). The view expressed herein can in no way be taken to reflect the official opinion of the DLR.

dlr logo