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:
T601-46MC
Vibro-Acoustic Analysis & Test methods for Large Deployable Structures
Classical rigid solar array vibro-acoustic modelling, analysis and test correlation has been developed up to a certain maturity,
however such methods are not directly transferable to thin film structures, closely packed radiators, SAR antennas etc. and
hence the vibro-acoustic FEM/BEM analysis, testing and their correlation of large-area light-weight structures need further
development. The objective of this activity is to define a Finite Element and Boundary Element modelling methodology and
tuning for mechanical loads applied to thin, flexible deployable structures, studying deterministic and random techniques,
taking into account fluid structure interactions, non-linear behaviour, effect of thin airgaps, effect of membrane stretching etc;
and the development of instrumentation techniques for subsystem vibration and acoustic testing. It will also include the testing
and correlation of a full size structural model, representative of vibro-acoustic parameters. Several tasks have been defined:
state-of-the-art review on analysis and testing methods; implementation of modelling technique in FEM/BEM code; definition
of analysis/test methodology; parametric breadboard design and test plan; and analysis, test and correlation of vibration and
vibroacoustic loads.
Deliverables:
Documentation and breadboard.
Current TRL: TRL1 Target TRL: TRL3 Application Need/Date: TRL5 >2010
solar array structures, deployable
Application/Mission: radiator structures, deployable flat Contract Duration: 18 months
antenna structures etc.
SW Clause : - Dossier0 Ref.: T-7896
Consistency with Harmonisation
Not directly linked to harmonised technology.
Roadmap and Conclusions:
Page 204 of 227