23, May 2016

ESA Open Invitation To Tender AO865
Open Date: 19/05/2016
Closing Date: 30/06/2016 13:00:00

Status: ISSUED
Reference Nr.: 16.1QQ.01
Prog. Ref.: TRP
Budget Ref.: E/0901-01 – TRP
Tender Type: C
Price Range: 200-500 KEURO
Products: Satellites & Probes / Other
Technology Domains: Quality, Dependability and Safety / System Dependability and Safety / Dependability and Safety Methods & Tools
Establishment: ESTEC
Directorate: Directorate of Technical & Quality Manag
Department: Product Assurance and Safety Department
Division: Quality, Dependability and PA Support Di
Contract Officer: Strzelecki, Patryk Michal
Industrial Policy Measure: N/A – Not apply
Last Update Date: 19/05/2016
Update Reason: Tender issue

Estimates of the remaining spacecraft lifetime to support mission extensions decisions are currently made simply based on consumables (e.g. fuel) and basic unit degradation considerations. However, with ever increasing pressure to comply with space debris mitigation regulations (e.g. ECSS-U-AS-10C, ISO24113) more accurate quantitative reliability-based lifetime assessments are needed. A reliability degradation model will be developed to improve the understanding of the spacecraft transition from its useful life period (constant failure rate with time) to its wear out period (increasing failure rate with time) by accurately modelling degradation. The reliability degradation model shall take into account wear out mechanisms impacted by environmental stresses (e.g. radiation), use conditions (e.g. thermal and power cycles), and limited resources (e.g. propellant/consumables, power degradation over time). In addition, the study will identify the needs for appropriate built-in test/redundancy status monitoring, sensor/health status data gathering, and load cycling/usage surveillance systems for life-limited items required to provide sufficient input data to the reliability degradation model for accurate prognostic capabilities of the remaining satellite lifetime and its probability of successful disposal.

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