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27 results found
Environmental aspects of passive de-orbiting devices

The technical objective of this study was to understand the net effect of using deorbiting technologies like sails or tethers over the future debris population around Earth. In principle, indeed, these attractive technologies will support the compliancy to post-mitigation disposal guidelines, for small missions. However, the increased cross section also increases the collision risk.

Italy

15/095

Politechnico di Milano
Game theoretic analysis of space debris removal dilemma

The increase of space debris means that active space debris removal is becoming more relevant. An active debris removal mission would have a positive effect (or risk reduction) for all satellites in the same orbital band. This leads to a dilemma: each space agency has an incentive to delay its actions and wait for others to respond. We model this scenario as a non-cooperative game between self-interested agents in which the agents are space agencies.

UK

15R01

University of Liverpool
Feasibility of using platform magnetometers to observe and detect space weather events

Magnetometers are fundamental instruments used in planetary and space science. They are able to measure magnetic fields originating in a planet’s interior, past fields encapsulated in rocks in the crust, as well as magnetic fields generated by the motion of charged particles in the plasma environments of ionospheres, magnetospheres and interplanetary space.

The Netherlands

15/067

TU DELFT
Numerical Simulations for Spacecraft Catastrophic Disruption Analysis

While the vast majority of space debris still stems from explosion events of satellites and rocket upper stages, current forecasts state that collisions, such as those between the Cosmos 2251 and Iridium 33 satellites in 2009, will play a dominant role in the mid-term future when a critical spatial density of satellites has been reached. In order to assess the risks emanating from space debris, a deeper understanding of the formation and residence time of breakup debris in orbit is essential for operational activities.

Germany

15/716-b

Fraunhofer Gesellschaft
Feasibility study of Active Debris Mitigation for Mega Constellations

The Thales Alenia Space study team completed a 13 month contract to study the feasibility of Active Debris Removal within mega-constellations. Within the Clean Space initiative, ESA searches for proactive answers to the environmental challenges which are faced both on Earth and in space. The Inter-Agency Space Debris Coordination Committee (IADC) has already highlighted the important topic of mega-constellations, which represent a step change in the future space environment due to the proliferation of small satellites.

France

15/099

Thales Alenia Space
End of Life operations for disposal of mega‐constellations

The objective of this activity was to understand the operational complexity of large mega-constellation systems, and the potential needs to operate these, including the complexity of collision avoidance manoeuvres (CAMs). This objective was achieved by:

Germany

15/052

Airbus Defence &...
Clean Sat technology assessment and concurrent engineering in support of LEO platform evolutions

In this activity, LSI's Airbus, OHB and Thales Alenia Space evaluated CleanSat technologies.

Italy

15/M61-c

Thales Alenia Space

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