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 4.2 - Materials and Structures / Advanced Materials TRP Reference: Title: T403-02QM High temperature complex parts based on intermetallic components The proposal intends to develop injection of parts made of gamma TiAl for propulsion thrusters parts with complex geometry. It comprises the following:- Critical review of requirements for propulsion parts suitable for TiAl materials will be performed.- Design of an of elegant breadboard (EBB).- Improvement of manufacturing process of intermetallic powder by a Self-propagating High-temperature Synthesis (SHS). Deliverables: Technical notes. Design of breadboard-Test samples and reports-Breadboard. Current TRL: TRL1-2 Target TRL: TRL2-3 Application Need/Date: TRL5 by 2010-2012 highly loaded, high temperature parts in Application/Mission: propulsion systems. ESA next generation Contract Duration: 18 months concepts. SW Clause : - Dossier0 Ref.: T-8133 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: T403-03MC Title: Multiphysic Modeling of Near-surface Phenomena In the last decade many advancements have been achieved in the theoretical modeling of hypersonic flows, but still phenomena exist that need to have deeper understanding for the improvement of TPS design with reduced safety margins. In the design of Thermal Protection Systems (TPS) a crucial issue is the correct evaluation of the heat fluxes. To this end, it is proposed to describe by accurate modeling the complex flow/structure interactions, and namely phenomena of catalysis, oxidation and ablation. In particular: near surface phenomena will be identified and modelled, including fluid/structure interactions (catalysis, oxidation, ablation); a test case will be selected and simulated and a recommendation will be formulated on the basis of the results analysis. Deliverables: Technical note (+ near surface phenomena identification/model description). Model (fluid/structure interactions: catalysis, oxidation, ablation). Test case selection/simulation. Results analysis + conclusion/recommendation. Current TRL: TRL1-2 Target TRL: TRL3 Application Need/Date: TRL5 >2010 Exploration missions, FLPP, Planetary Application/Mission: Contract Duration: 18 months entry missions SW Clause : - Dossier0 Ref.: T-8091 Consistency with Harmonisation Roadmap and Conclusions: Page 85 of 227
TRP Work Plan 2005-2007 Description of Activities TEC-SB/7935/dc 12/Feb/09 TRP Reference: Title: T403-03MC.B Multidisciplinary Modeling of Fluid Structure Interaction In the last decade Europe has invested significant effort in the development and qualification of various hot structures and thermal protection systems (TPS) as well as on the theoretical modeling of hypersonic flows; although major critical issues have been addressed and several investigations have been successfully carried out, further attention is required to improve the understanding of the physical phenomena occurring at the interfaces between the aerodynamic flow field and the TPS outer surface, to enhance the prediction of the thermo-mechanical environment, and, thereafter, to reduce the design margins. To this end it is proposed to characterize the thermo-chemical fluid-surface interactions occurring in the proximity of the outer surface (and on the surface itself) by physical and numerical modeling and to study and apply a suitable fluid/structure coupled approach, so that the analysis capability of the flight thermo-mechanical environment is enhanced. A set of test cases will be selected and simulated and a recommendation will be formulated on the basis of the results analysis. Deliverables: Technical note (+ survey on critical fluid-surface interaction phenomena and fluid-Structure thermal coupling, Modeling report). Models. Computational modules. Test cases selection/simulation. Results analysis + conclusion/recommendation. Current TRL: TRL1-2 Target TRL: TRL3 Application Need/Date: SW operational >2010 Design SW for TPS for Space Application/Mission: Transportation applications, entry Contract Duration: 18 months missions SW Clause : - Dossier0 Ref.: T-8091 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: T403-09MC Title: Increase of Bolted Joint performance for CFRP Joining of structural CFRP-parts with bolts and rivets is a common approach for manufacturing and repairing in the space and aeronautical industry. However this joining method does not reflect an appropriate joining technology in terms of fiber reinforced plastics (FRP). The main principle in joining with bolts and rivets is the fact that forces are transferred not by tension and pressure force but by shear and bearing stress. Fiber reinforced plastics with common matrix systems usually reach good values for tension and pressure but not for bearing stresses and are therefore not suitable for a bolted joining. Current studies on metal-composite laminates for aircraft composite joints show that these offer better mechanical and fatigue performance over conventional composite bolted joints. An alternative way to increase the bearing stress would be by introducing local softened carbon fiber laminates. Therefore the development and evaluation of composite laminate bolted joint concepts for highly loaded launcher and RLV space applications is urgently needed. The proposed activity aims at studying and evaluating possible concepts of composite laminate bolted joint, for highly loaded space applications, including removable and replaceable joints. Deliverables: Design and verification guidelines for highly loaded composite structural joints. Reference design catalogue. Reference tests data collection. Test specimens. Current TRL: TRL2 Target TRL: TRL4 Application Need/Date: TRL5 > 2008 Application/Mission: spacecraft and launcher structures Contract Duration: 18 months SW Clause : - Dossier0 Ref.: T-534 Consistency with Harmonisation Roadmap and Conclusions: Page 86 of 227
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