Integration, testing and verification of avionics systems is often a grueling battle when it comes to configuration and tools. Tests at different stages of development are separated from each other, the setups of the different manufacturers of tools may be incompatible. Schedules cannot be adhered to and costs are unnecessarily driven up.
This is reason enough to develop an open standard for test systems and tests. The Virtual Hybrid Testing Next Generation project (VHTNG) has seen the German and French authorities, manufacturers and users of avionic test systems join forces to develop such an open standard. They are supported by publicly funded projects in Germany by the Bundesministerium für Wirtschaft und Energie (BMWi) and in France by the Direction générale de l’aviation civile (DGAC).
This standard covers the configuration of test systems, the control of the systems and the data exchange between the systems, as well as a uniform simulation interface model and a standardized test script specification. The requirements include the possibility of virtual testing and hybrid testing with reusability of the tests at all development stages from model- based testing up to system verification and validation. Fault insertion, real-time data exchange, scalability and integration with product lifecycle management tools are also on the agenda.
The standard is not too narrowly defined. It limits itself to defining the minimum information that is required for the test means interconnection in order to not restrict the creativity of the test equipment manufacturers. The standard defines a common model of a test system organized around a few entities and a simple behavior.
For detailed information, read the full article published in the Aerospace Testing International 2020 Showcase.