document title / titre du document TRP W ORK PLAN ... - emits - ESA

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TRP Work Plan 2005-2007 Description of Activities TEC-SB/7935/dc 12/Feb/09 - proof maturity of the relevant technology developments; - select a flight demonstrator concept, considering not only technical requirements but also launch constraints; - complete the detailed design of the flight demonstrator; - manufacture and ground test prove the flight demonstrator (combined analysis and testing). A successful completion of this program will thus pave the way for a future European inflatable structure flight demonstration mission. Flight test would be proposed as part of the GSTP. Deliverables: Technical datapackage. On-ground breadboard and demonstrator. Current TRL: TRL1 Target TRL: TRL4 Application Need/Date: TRL5 by 2010 all spacecrafts (next step should be flight Application/Mission: Contract Duration: 24 months demonstration) SW Clause : - Dossier0 Ref.: T-617 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: Title: MCS-002 Electro Active Polymer Actuator Deliverables: Current TRL: Target TRL: Application Need/Date: Application/Mission: Contract Duration: SW Clause : - Dossier0 Ref.: Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: T505-06MC Title: Active Structures for Large Solar Array Panels A major challenge in designing structures for large solar arrays is the requirement for high fundamental frequencies and the ability to withstand considerable launch loads. The highest stresses in the structure often occur due to resonances in the frequency range of the launch loads. Active structures (e.g. actuated by piezo ceramics) can dampen resonances by closed-loop control. The objective of this activity is to develop S/A panel structures with closed loop control of their dynamic behaviour. Deliverables: Concepts assessment, trade-off and selection. Detailed design of breadboard control system. Detailed design of breadboard model. Manufacturing and performance test of breadboard. Definition of plan for introduction into future projects. Development plan. Current TRL: TRL1 Target TRL: TRL2 Application Need/Date: TRL5 by 2010-2012 solar array structures, other large and Application/Mission: flexible structures. Contract Duration: 12 months SW Clause : - Dossier0 Ref.: T-555 Consistency with Harmonisation Roadmap and Conclusions: Not directly linked to harmonised technology. Page 201 of 227
TRP Work Plan 2005-2007 Description of Activities TEC-SB/7935/dc 12/Feb/09 TRP Reference: T601-05MC Derivation of satellite equipment design and test specifications from random vibration Title: environments Recent experiences from several ESA satellite projects show that the approach conforming to ECSS standard E-10-03A results to requirements frequently contradicting spacecraft hardware measurements. As a result, there is a request from space industry and equipment manufacturers that the current approach for the derivation of equipment design and test load specifications needs to be reviewed and possibly improved. This is the subject of the proposed activity. The objective is to derive an adequate approach for the specification of equipment quasi-static design loads and random vibration test inputs. At the same time it will update and improve the currently applied approach derived by Intespace in the 1980’s. This would include the establishment of a relevant database containing acoustic test results from various spacecraft projects. Also the new approach will be implemented in a user-friendly tool based on e.g. an Excel spreadsheet. Description of sub-activities and Planning:1. Review of satellite project documentation concerning acoustic test results. Test data collection and preparation for database supporting the spreadsheet application. 2.Implementation of a limited number of complementary panel tests with various configurations (e.g. size, mass loading). 3.Development of a rationale for the correlation of equipment unit quasi-static design and random vibration test loads. 4. Development of the spreadsheet lay-out (preferably Excel) with a flow chart and a self-explaining user guide. Implementation of the calculation process. 5.Rationale for the reliability of the specification with probability of the loads compared to the acoustic test data basis. Deliverables: User guide, design methodology description. Current TRL: TRL2 Target TRL: TRL4-5 Application Need/Date: TRL5 >2008 Application/Mission: all spacecraft/payloads Contract Duration: 12 months SW Clause : - Dossier0 Ref.: T-562 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: Title: T601-09MC Establishment of satellite mechanical shock design and verification guidelines In the past several studies have been performed dealing with different aspects of the mechanical shock problems such as shock source investigation, shock absorption, shock testing, shock analysis, shock transmission. Although the state of the art for shock environment prediction and verification in spacecraft have not yet reached the maturity of other environmental disciplines, recent advances in prediction techniques environment verification and test execution bring a better understanding of this environment. The experience, gained over the past years, shall be documented as guidelines in order to make this expertise available for ESA community. Two guidelines are proposed: - Guideline for shock environment prediction “Establish the specification, from LV I/F to unit I/F, resulting in definition of the equipment specification”. –Guideline for the qualification of units and for the test execution” Equipment Design verification, including SDRA in support to design / qualification, including testing, including correlation and usage of test results for analytical assessments and qualification purpose “In order to get the guidelines the following tasks will be done: review of satellite project and study documentation concerning mechanical shock; write the handbook’s chapters with comprehensive presentation of available know-how (shock sources, shock transmission, equipment sensitivity, shock test facilities, shock specification, shock analysis); and write guidelines/rules and prepare a release process for the guidelines/rules (working groups/sessions under control/with ESA/companies experts). Deliverables: Guidelines / handbook. Current TRL: - Target TRL: TRL5 Application Need/Date: TRL5 >2008 all spacecraft / equipment subject to Application/Mission: Contract Duration: 12 months shock tanks SW Clause : - Dossier0 Ref.: T-562 Consistency with Harmonisation Roadmap and Conclusions: Page 202 of 227
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document title / titre du document TRP W ORK PLAN ... - emits - ESA

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