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

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:
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