AeroGrid integrates a number of middleware and application components that were developed in other projects involving the project partners, and have in some cases already been tested in grid environments. A brief introduction to these:

• UNICORE: In the UniGridS project, the UNICORE grid middleware originally developed in a BMBF-sponsored project was revised on the basis of the new OGSA and WSRF standards, providing the project with a proven and industry-accepted method for cross-organisational computer utilisation that can interact directly with organisations’ internal computer grids and be integrated into the Service Oriented Architectures (SOA) of the partners involved. In the UniGridS project, a key responsibility of T-Systems SfR is also to develop a service management concept and a release management system for UNICORE. Business models are being developed in both the UniGridS and the InGrid projects.
• DataFinder: The DataFinder is software developed by DLR for managing scientific data. The – sometimes unstructured – scientific data are assigned suitable meta information and ordered into freely definable structures. In addition, the DataFinder allows simple workflows to be automated by means of scripts. The DataFinder is implemented as a client-server-solution that uses the WebDAV protocol for communication between client and server. While the meta data are stored in XML format on a WebDAV enabled server, a number of storage technologies are available for the data themselves. The D-Grid integration project extends the DataFinder by the use of grid resources.
• Provenance Service: To qualify for use in industrial aeronautics applications, AeroGrid must meet extensive security requirements. Both legal regulations and economic aspects demand that the reliability of a simulation remain provable even years later. To enable this retrospective auditing, meta data such as date created, creating person and/or organisation, or the software version and hardware platform used must be recorded both for simulation input and output data. For this purpose, the FP6 project EU PROVENANCE has developed a grid-enabled software solution consisting of a provenance service and an application library; it has already been tested with the TENT integration system in an aeronautics application at DLR.
• TrustCoM, GrASP: The IST projects TrustCoM and GrASP aim(ed) to create an infrastructure for dynamic virtual organisations. Their main focus is on the specific circumstances of real business applications. In particular, resource providers are to be given a simple way of extending their resources by grid functionalities from the fields of security, contract management and reputation. In the interests of maximum interoperability, these extensions are based on standardised web service protocols.
• TRACE application code: Over the last twelve years, the TRACE CFD simulation system for numerically examining stationary and transient three-dimensional friction-affected flows through turbomachines has been developed to maturity for industrial and research use at the DLR Institute for Propulsion Technology. TRACE is used by DLR’s industry partners to design engine components, and by several higher education institution partners for various research projects. A number of issues regarding the aerodynamics of turbomachines have been successfully resolved within a long-standing industry co-operation.