Successful launch of the European Aeolus satellite

23rd August 2018

Our team is pleased to see the Aeolus mission launch into orbit successfully on 22 August.  The satellite, built in Stevenage, UK, by Airbus and owned by the European Space Agency (ESA) and controlled from their operations centre in Darmstadt, Germany, relies on software developed by the Bristol team.


ESA’s Aeolus satellite is the first satellite designed to measure wind speed from space. It uses a powerful ultra-violet laser that illuminates fine particles of dust caught in the atmosphere. Being in a polar orbit means that it will scan the whole Earth every seven days.

Two specialist teams at Bristol-based Space UK division developed the onboard software (OBSW) and a bespoke Operational Simulator.

The Aeolus mission was first approved by the European Space Agency in 1999 and work commenced in early 2004. Most ESA missions use SCISYS onboard software, in either mission preparation or during spacecraft operations.

“This has been an exceptionally long-running project, and a lot of people have worked on the software for many years”, said Glenn Johnson, Flight Software Technical Lead at the SCISYS Space UK division.  “It’s a relief to see the satellite finally make it into space”.

Aeolus is designed to last at least three years, during which time the OBSW will ensure the correct orientation of the satellite, manage the flow of scientific data to the ground and control the operation of the laser. The OBSW is also responsible for adjusting the orbit when necessary and keeping the satellite at a stable temperature.

The Bristol team also created an Operational Simulator for the Aeolus mission. This is an essential support tool for operators in their mission-preparation activities and to validate ground-segment elements and interfaces prior to launch. The simulator is a key risk-mitigation solution and is used to test the onboard software pre- and post-launch to ensure it meets mission requirements.

Most of the work on the software for Aeolus was completed by 2010, but problems with the optics of the powerful laser meant that changes were needed to the satellite design. This required further software solutions to be developed by the SCISYS team.

Fourteen years after work on the mission began, the final software was delivered at the start of 2018.  Since then, the team has kept a close eye on launch preparations, as reported on,  and

Well done to everyone involved in this mission, and we wish the satellite a successful journey.

The  launch video by ESA can be viewed on this link.


PR/Media contact:

Neth Williams

neth.williams .uk


Space UK division

0117616 5176

About SCISYS Group:

Employing around 670 staff, SCISYS Group is a leading developer of information and communications technology services, e-business, web and mobile applications, editorial newsroom solutions and advanced technology solutions. The Company operates in a broad spectrum of market sectors, including Media & Broadcast, Space, Government and Defence and Commercial sectors. SCISYS clients are predominantly blue-chip and public-sector organisations. Customers include the Environment Agency, the Ministry of Defence, Airbus Defence & Space, Thales Alenia Space, Arqiva, Vodafone, the European Space Agency, Eumetsat, the BBC, Radio France, RTL, RNLI, Pets at Home, Siemens and the National Trust. The Company's registered office is in Dublin, with UK offices in Chippenham, Bristol, Leicester and Reading and German offices in Bochum, Dortmund, Darmstadt and Munich.