Speaker
Description
The ESA SCORED activity aims to establish a comprehensive database of approved material and component models for use in destructive re-entry (DRE) and hypervelocity impact (HVI) simulations. As its primary output, the project will deliver a repository of model definitions that can be accessed by both ESA personnel and third-parties using a web-browser and processes to be used when constructing models for inclusion within the database.
The data structure used to describe the various models within the repository is designed to be tool agnostic, and the tools used to construct the database were selected to permit the ongoing expansion and enhancement of the data model with relatively low levels of software engineering effort.
Models have been identified and imported from a number of existing sources in order to provide an initial population. These include material properties, DRE and HVI material models, HVI BLE definitions, HVI component definitions and DRE component definitions sources from ESTIMATE, DRAMA v3.1.0, Ernst Mach Institute (EMI) and Belstead Research Limited.
A destructive test campaign examining the demise behaviour of Ariane Group 1N thrusters has been undertaken within the activity at DLR’s hypersonic wind tunnels in Cologne. The results of this campaign have been used to construct new material models for Haynes 25, and two enhanced DRE models of a small thruster. In addition, new models for the assessment of HVI of electrical harnesses protected by a sandwich panel have been constructed from existing experimental test results by EMI. New DRE models for generic fill/drain valves constructed of titanium, steel and Inconel, and mid-size 10N and large 50N thrusters have also been constructed from product data in public domain.
As well as interactive use over the web, extract tools have been written to generate the material and component files needed by DRAMA, allowing the data stored within the SCORED database to directly drive the models embedded within future versions of ESA’s regulatory assessment tool.
