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GreenSat

Due to the harsh nature of outer space, stringent requirements and performances are required from space systems. Thanks to evolving environmental awareness and the building up of a knowledge base at ESA, we are becoming more wary of the environmental impact of space activities on Earth. Through the GreenSat project, ESA wants to evolve from the assessment to reduction of environmental impact through redesigning an existing satellite mission. The project allows ESA to check the feasibility of implementing ecodesign in the development of space missions.

Belgium

15/033-a

Vito
REACH into LCA – Integration of REACH and CRMs into the Life Cycle Assessment framework

For the REACH assessment, the proposed method relies on both ESA’s existing Life Cycle Assessment(LCA) framework and the Materials & Processes Technology Board (MPTB) Database. Then, the method was structured in three steps:

  • Firstly, a commonality is found between the LCA and MPTB databases: ECSS classes, thathelp define small groups of materials defined as “clusters”, are used to “bridge the gap”in terms of level of precision between the LCA model of a space system and the MPTB database;

France

15/050

Deloitte Sustainability
GreenSat

Resulting from an ever increasing public pressure, the quest to be environmentally friendly is transforming the competitive landscape, as eco-friendly design turns into a new frontier of innovation. As a public sector intergovernmental organisation, ESA is committed to prioritizing environmental concerns in all its activities. Through its Clean Space initiative, it is pioneering an eco-friendly approach to space activities.

France

15/033-a

Thales Alenia Space
Clean Sat Technology assessment and concurrent engineering in support of LEO platform evolutions

During the CleanSat concurrent engineering phase, Airbus, OHB, and TAS-I have cooperated within a consortium and have shared evenly the management of the different suppliers. Moreover, according to their priorities, each LSI had the possibility to be involved in the technical discussions with ESA, the other LSIs and the different BB suppliers. The concurrent engineering phase started in September 2015 and ended in April 2017 with a final presentation at ESTEC.

Italy

15/M61-c

Thales Alenia Space
System impacts of propulsion Passivation

Propulsion passivation is most of the time feasible for running missions, using thrusters and existing AOCS modes, whatever the number of tanks and for both monopropellant and bipropellant systems.
For monopropellant systems the propulsion passivation may be:
-Partial for tank(s) with membrane. All the hydrazine under the membrane may be depleted but the pressurant gas above the membrane cannot be depleted. The final tank pressure is close to typically 5 bars at the end of mission.

France

13-060-b

Airbus Defence &...
System impacts of propulsion Passivation

Space debris mitigation requirements specific to propulsion systems are scrutinized and compliance of OHB reference propulsion architectures is assessed. The risk of generating debris due to a failure in a propulsion system is assessed with a focus on the specific risk of a hypervelocity impact on a propulsion tank containing residuals.

The engineering activities, delta-qualifications or hardware development which can support the recommended propulsion passivation strategies are presented and prioritized.

Germany

13-060-a

OHB System AG

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