CEN/CLC/TR 17603-11:2021
(Main)Space engineering - Technology readiness level (TRL) guidelines
Space engineering - Technology readiness level (TRL) guidelines
The present handbook is provided to support the implementation of the requirements of ECSS-E-AS-11 to space projects.
With this purpose, this handbook provides guidelines on the w ay to assess the maturity of a technology of a product in a
given environment, to use the TRL assessment outcome in the product development framew ork, and to introduce some
further refinements for specific disciplines or products to w hich the TRL assessment methodology can be extended.
The concept of Manufacturing Readiness Level (MRL) is not addressed in this document, w hilst the concept of TRL can
be applied to the technology-related aspects of manufacturing.
Raumfahrttechnik - Richtlinien zum technischen Reifegrad (TRL)
Ingénierie spatiale - Guide d’utilisation des Niveaux de Maturité Technologique (NMT)
Vesoljska tehnika - Smernice za ravni tehnološke zrelosti (TRL)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2021
Vesoljska tehnika - Smernice za ravni tehnološke zrelosti (TRL)
Space engineering - Technology readiness level (TRL) guidelines
Raumfahrttechnik - Richtlinien zum technischen Reifegrad (TRL)
Ingénierie spatiale - Guide d’utilisation des Niveaux de Maturité Technologique (NMT)
Ta slovenski standard je istoveten z: CEN/CLC/TR 17603-11:2021
ICS:
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL REPORT
CEN/CLC/TR 17603-11
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
September 2021
ICS 49.140
English version
Space engineering - Technology readiness level (TRL)
guidelines
Ingénierie spatiale - Guide d'utilisation des Niveaux de Raumfahrttechnik - Richtlinien zum technischen
Maturité Technologique (NMT) Reifegrad (TRL)
This Technical Report was approved by CEN on 26 March 2021. It has been drawn up by the Technical Committee CEN/CLC/JTC
5.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2021 CEN/CENELEC All rights of exploitation in any form and by any means Ref. No. CEN/CLC/TR 17603-11:2021 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Table of contents
European Foreword . 5
Introduction . 6
1 Scope . 7
2 References . 8
3 Terms, definitions and abbreviated terms . 10
3.1 Terms defined in other documents . 10
3.2 Terms specific to the present document . 11
3.3 Abbreviated terms and symbols . 11
4 TRL history and evolution . 13
4.1 History and evolution . 13
4.2 Differences between M95r and ISO 16290 standard as seen by ECSS
(European interpretation) . 13
4.3 TRL implementation in ECSS system . 14
4.4 TRL and assessment basic principles . 14
5 Technology readiness assessment (TRA) guidelines . 17
5.1 Introduction . 17
5.2 General principles for technology readiness assessment. 17
5.2.1 TRL standard . 17
5.2.2 TRA pre-requisites . 21
5.2.3 Independent verification of the TRL . 22
5.2.4 Discipline specific TRA process . 22
5.2.5 Typical technology readiness assessment (TRA) process. 22
5.2.6 TRA criteria . 23
5.2.7 Viability of TRL progression . 23
5.3 TRL evaluation by level . 24
5.3.1 TRL 1: Basic principles observed and reported . 24
5.3.2 TRL 2: Technology concept and/or application formulated . 24
5.3.3 TRL 3: Analytical and experimental critical function and/or
characteristic proof-of-concept . 24
5.3.4 TRL 4 : Component and/or breadboard functional verification in
laboratory environment . 25
5.3.5 TRL 5 : Component and/or breadboard critical function verification in
a relevant environment . 26
5.3.6 TRL 6: Model demonstrating the critical functions of the element in a
relevant environment . 27
5.3.7 TRL 7 : Model demonstrating the element performance for the
operational environment . 28
5.3.8 TRL 8 : Actual system completed and accepted for flight (“flight
qualified”) . 28
5.3.9 TRL 9: Actual system “flight proven” through successful mission
operations . 29
5.4 Guidelines for other uses of TRLs in R&T&D activities . 29
6 Implementation in projects . 32
6.1 General . 32
6.2 Critical functions and technologies in projects . 33
6.2.1 Overview . 33
6.2.2 Technology readiness status list (TRSL) and transference to critical
item list . 34
6.3 Technology readiness assessment (TRA) in projects . 34
6.4 Typical levels linked to project phases and milestones . 35
7 Links with model philosophy and technology demonstration and
reassessment . 39
7.1 Links with model types and technology demonstration . 39
7.1.1 Link between TRL and model types . 39
7.1.2 Link between TRL and technology demonstrators . 42
7.2 Re-assessment of TRL for re-use of element with existing TRA . 44
7.2.1 Technical guidelines . 44
7.2.2 Technology re-use in a new environment . 46
Annex A TRL considerations for software . 47
A.1 Terms specific to the present annex . 47
A.2 ISO TRL scale and software developments . 48
A.3 Basic principles . 48
A.4 Use of TRL with Software . 49
A.5 Relationship between TRL and criticality categories . 56
Annex B TRL considerations for EEE components . 57
Annex C TRL considerations for materials and manufacturing processes . 59
Figures
Figure 4-1: Illustration of differences between M95r (European interpretation) and
ECSS-E-AS-11. 14
Figure 4-2: Evolution technology maturity . 15
Figure 5-1: Illustration of a new RF transistor then RF amplifier progressing through
TRL . 21
Figure 5-2: Example of ESA technology activity template . 30
Figure 5-3: Illustration of a Technology Roadmap . 31
Figure 6-1: Risk versus TRL and complexity . 33
Figure 6-2: Evolution of technology options during preliminary project phases . 35
Figure 6-3: Project phases and generalised institutional expectation of TRA outcome . 37
Figure 6-4: Project phases and generalised commercial expectation of TRA outcome . 38
Tables
Table 5-1: TRL summary - Milestones and work achievement (adapted from ISO
16290) . 18
Table 6-1: Benefits of use of TRA . 36
Table 7-1: Models types associated to TRLs . 40
Table 7-2: Use of commonly-used models for TRL progression . 42
Table 7-3: Links between TRL and Heritage Category . 45
Table 7-4: Technology maturity transfer for re-use . 46
Table A-1 : Link between Software development status and TRL . 50
Table B-1 : Milestones and work achievement for EEE components TRL. 57
Table C-1 : Use of TRL for with materials and manufacturing process development . 60
European Foreword
This document (CEN/CLC/TR 17603-11:2021) has been prepared by Technical Committee
CEN/CLC/JTC 5 “Space”, the secretariat of which is held by DIN.
It is highlighted that this technical report does not contain any requirement but only collection of data
or descriptions and guidelines about how to organize and perform the work in support of EN 16603-
11.
This Technical report (CEN/CLC/TR 17603-11:2021) originates from ECSS-E-HB-11A.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such
patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and
the European Free Trade Association.
This document has been developed to cover specifically space systems and has therefore precedence
over any TR covering the same scope but with a wider domain of applicability (e.g.: aerospace).
Introduction
This Handbook supports the application of the TRL, and provides guidelines to its use in projects and
its independent verification within each specific project context.
This Handbook provides guidelines for best practice for interpretation of the requirements contained
in ECSS-E-AS-11 and for the implementation of the process of technology readiness assessment for
technologies applied to a critical function of an element.
The ECSS-E-AS-11 - “Adoption Notice of ISO 16290 Definition of the Technology Readiness Levels
(TRLs) and their criteria of assessment” adopts ISO 16290 with a minimum set of modifications, to
allow for reference and for a consistent integration in ECSS system of standards.
TRL is a scale for technology maturity assessment and not a method of technology engineering nor
development. TRL is used in R&T&D activities and also in project activities.
For project activities, a technology readiness assessment informs the project manager (until the end of
B phase) of the risk when adopting a new technology for a critical function of an element of the
system. In the C and D phases TRL is no longer used by the project and the maturity of technology is
managed in the critical item list.
For other projects the information of the declared technology maturity can be reused and an
assessment of the new project use conditions are considered in the assessment.
In this handbook the three main actors and the respective role of each actor are clearly identified. The
three discrete actors are: technology developers, projects teams (using the technology) and the TRA
participants (i.e. those who perform the technology readiness assessment).
Scope
The present handbook is provided to support the implementation of the requirements of ECSS-E-AS-11
to space projects.
With this purpose, this handbook provides guidelines on the way to assess the maturity of a
technology of a product in a giv
...
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