Debris mitigation: technical challenges of the ariane 5 passivation

Details Debris mitigation: technical challenges of the ariane 5 passivation Debris mitigation: technical challenges of the ariane 5 passivation

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..23..249b&link_type=abstract

Advances in Space Research, Volume 23, Issue 1, p. 249-252.

Computer Science

Scientific paper

Considered as one of the most effective methods for debris mitigation, the passivation of spent upper stages is complex to define, implement and qualify. The example of the Ariane 5 EPS is given. After a short description of the selected technical solution, the paper deals with the following points: • safety and reliability aspects linked to the passivation system, • torque resulting from passivation, • behaviour of hypergolic propellants after expulsion and experimental validation, • modelisation of the payload contamination and experimental validation, • thermodynamic behaviour of the propellant at the passivation exhausts and experimental validation, • generation of propellant droplets in the vacuum.

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