ESA TIA uses cookies to track visits to our website only. (read cookie policy)
    29 Mar 2015 
ARTES Elements
Tenders and Workplans
Last Update: 27 Jun 2006
Platform equipment

SADE: Solar Array Drive Electronics



The Solar Array Drive Electronics (SADE) allows command of the mechanism which ensures rotation of the solar array.

click for larger image


The SADE consists of :
  • DC/DC module which provides :
    - All secondary voltages need for the application 
    - ON/OFF commands and associated status
  • SADE module which provides
    - Regulated current source for north and south stepper motors
    - Position sensors interface (potentiometers and optical switches)
    - Serial TM/TC interface (ML16/DS16 protocol)

click for larger image

The SADE meets all requirements defined in the customer specification requirements.

Project Plan

The design, development and manufacturing plan of SADE is cut in four phases :
  • Phase one consists of the design and development of electrical and mechanical parts to hold a Critical Design Review (achieved in 6 months)
  • Phase two consists of the EM manufacturing and shock qualification (achieved in 4 months)
  • Phase three consists of the SADE EM coupling test with SADM (mechanism) (achieved in 2 months)
  • Phase four consists of manufacturing the PFM1 leading to perform the full qualification sequence (electrical full performance, vibration tests, thermal vacuum tests, electromagnetic compatibility test (achieved in 5 months)


The SADE is able to drive two stepper motors controlled in microstep by a current sources and to monitor associated position sensors.


The development of the SADE being based on a sufficient versatility to meet most requirements, this equipment has a sale potential as it may be addressed to various primes and may be adapted to different platforms.

Current Status (dated: 18 Jan 2005)

The SADE is now fully qualified for SPACEBUS platform.

All images courtesy of project team

Last Update: 27 Jun 2006
Project Plan
Current Status
  Copyright 2000 - 2015 © European Space Agency. All rights reserved.