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                        KTH Physics


                    "Man to Mars: A perfect example of circular economy"





Wednesday, 01.March 2017

    Video-Recording for any system with MP4-support


       - Video.mp4 (ca.262 Mb)


 15:15 – 16:00



                                                          Christophe Lasseur



Abstract :

Pace is a very hostile environment for man, and so far all the metabolic needs have to be

transported from Earth. When considering very long term presence in space these masses

represent an enormous mass not compatible with the performance of current launchers.

In Europe, the MELiSSA (Micro-Ecological Life Support System Alternative) project was

initiated in 1989, as a tool to gain understanding of closed life support, as well as the

development of the technology for a future life support system.

The driving element of MELiSSA is the production of food, water and oxygen from organic

waste (inedible biomass, CO2, urea etc.). Inspired by the principle of an ”aquatic” ecosystem,

MELiSSA comprises several processes, called compartments, from the anoxygenic fermenter

up to the photosynthetic one (i.e. algae and higher plants).

The choise of this compartmentalised structure is required by the very high level of safety

requirements and justified by the need of an engineering approach and to build deterministic

control strategy. During the past 27 years of research and development, a very progressive

approach has been developed to understand, simulate, test and control the MELiSSA loop.

This approach starts from the selection of processes, their characterisation and mathematical

modelling, the validation of the control strategy, up to the demonstration on Earth, at pilot scale

and leads to preliminary flight experiments.

This presentation recalls the main features of the project and summarises the recent achievements.



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