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Reference: ESA-STEQ-RP-0001, Issue 1, Revision 1

STE-QUEST, a Space-Time Explorer and Quantum Equivalence Principle Space Test, is one of five candidate missions for the M3 launch opportunity. A Preliminary Requirements Review (PRR) of all candidate missions has been performed to review their status in support of the M3 selection. This document reports the results of the technical and programmatic review for the STE-QUEST mission candidate.

Published: 16 December 2013
Reference: ESA/SRE(2013)6.

This is the Assessment Study Report (also known as the Yellow Book) for STE-QUEST - a candidate mission for the M3 launch opportunity in Cosmic Vision.

Published: 16 December 2013
Reference: FPM-SA-Dc-00001

This document presents the scientific objectives of the ESA mission STE-QUEST and provides the top level science requirements. STE-QUEST is a mission in the Fundamental Physics domain conceived to test to high accuracy the different aspects of the Einstein Equivalence Principle (EEP). The scientific case described in this document was initially recommended by the ESA-appointed "Fundamental Physics Roadmap Advisory Team" (FPR-AT) as a result of a large consultation process conducted in the fundamental physics community [FPR-AT, A Roadmap for Fundamental Physics in Space, (2010)]. Submitted in reply to the 2010 Call for Medium-size Missions for the Cosmic Vision plan, STE-QUEST was recommended by the ESA advisory structure and finally selected for an assessment study.

This Science Requirements Document (SciRD) will be the basis for the STE-QUEST mission design during the assessment study phase, which started in April 2011 and will be concluded with the presentation of the study results to the ESA advisory structure in beginning 2014. During the assessment phase, it is expected that the requirements may be adjusted driven by technical feasibility within the programmatic boundaries. The STE-QUEST Study Science Team will act as the review and control board for changes in this document. The possible changes will be logged in this document to provide a record of the evolution.

This document also aims at showing the links between science requirements and mission performance requirements, in order to help to understand, trace, and support the analysis of the relation between mission specifications and scientific objectives.

Published: 23 April 2013
Reference: SRE-PA/2011.074/RQ/MG

STE-QUEST is an M-class mission candidate for the M3 slot within the Cosmic Vision programme, for a planned launch between 2022 and 2024. STE-QUEST, with 3 other science missions, was recommended by the Space Science Advisory Committee (SSAC) to enter an assessment study (Phase 0), starting by an ESA internal study followed by parallel industrial study activities. Within the M3 boundary conditions, the readiness for launch by end 2022/2024 is a severe requirement which in practice requires designing the space segment without major technology developments and with minimum developments risks. Therefore, only technologies with estimated Technology Readiness Levels (TRL) of at least 5 by the end of the Phase A (estimated at the end of 2014) may be used.

This document aims at providing a complete and comprehensive list of all high level mission requirements (including spacecraft and payload, launcher, ground segment and operations) necessary to achieve the science goals detailed in [STE-QUEST Science Requirements Document, FPM-SA-Dc-00001]. It is hence an applicable document that shall be complied with for all mission design activities. The MRD will be further reviewed matching the results of future study phases (e.g. definition phase) to finally evolve in the System Requirements Document at the start of the implementation phase.

Published: 19 September 2012
Reference: SRE-PA/2011-075/TN/PW

This document describes the Payload of STE-QUEST, a mission in the Fundamental Physics domain conceived to test to high accuracy the different aspects of the Einstein Equivalence Principle. This document derives directly from the STE-QUEST Science Requirements Document and STE-QUEST Mission Requirements Document. It also integrates elements included in the STE-QUEST proposal (and associated reference documents), the STE-QUEST CDF Study and the STE-QUEST Instruments Mid-Term Review datapackages.

This document provides the baseline description of the payload, its instruments, supporting units and interfaces, as defined at the beginning of the STE-QUEST assessment study. It shall be consolidated as part of the study and shall be formally updated at the end of it. This is the first revision of the document, following the completion and closure of the Instruments mid-term Review held in May 2011.

Published: 23 June 2012

Summary of the study performed at ESA's Concurrent Design Facility (CDF) into the M-class mission Space-Time Explorer and QUantum Equivalence Principle Space Test (STE-QUEST).

Contents of the presentation:

  • Study: goals, tasks, organization
  • Drivers and constraints
  • Configuration and payload accomodation
  • Instruments
  • Mission analysis
  • Ground stations and operations
  • Attitude and orbit control
  • System design
  • Communication
  • Budgets
  • Risk, programmatics, cost
  • Requirements review
  • Conclusions

Published: 01 July 2011
STE-QUEST is the Space-Time Explorer and Quantum Equivalence Principle Space Test. The STE-QUEST mission proposal was submitted in 2010 to ESA in response to the Call for medium-size (M-class) missions in the Cosmic Vision 2015-2025 plan with a launch opportunity in the period 2020-22. In February 2011 STE-QUEST was one of four missions recommended by the ESA advisory structure and selected for an assessment study. The mission proposal can be accessed through the publication link below.
Published: 03 December 2010
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