Mr. Hess (OICA) presented document GTR9-2-10 reporting about the experiences of an OEM with three different impactors of the FlexPLI (2 prototype impactors and one production legform). Three different vehicle types were tested: a sedan type vehicle, a sports car as well as an SUV. Mr. Hess pointed out that, despite the test results are already promising for all legforms, the divergences for the legforms are quite high in some cases with different peak values of well above 20%.

Mr. Edwards wondered which divergence would be acceptable and Mr. Hess replied that 10% should be a target considering that some of the divergences may be caused by the vehicles.

Mr. Zander wondered what the build levels of the legforms were. It was replied that SN-04 and the production leg had vinyl ester bone cores; SN-02 had polyester bones. All legforms were already equipped long rubbers in front of the tibia at the time of the testing.

Dr. Konosu highlighted that obviously the design of vehicles towards compliance with the FlexPLI requirements is already possible. Also, he mentioned that the divergences may also be caused by the use of different vehicle parts. Mr. Hess agreed that this may be the case but noted that only production parts were used that usually have limited differences in their performance and their material composition. However, he promised to also deliver the certification test results at a later meeting.

Mr. Gehring noted that the time difference between the tests – SN-04 was tested in 2009 and the other impactors in 2011 – may also have an influence. Dr. Otubushin replied that the time must not be an issue for an impactor. However, it was clarified that not the time difference itself was meant but that SN-04 was tested at a time were limited experiences were available and the impactor itself was still at an early stage of the impactor development. However, it would be interesting to have test results produced at the same period of time under the same conditions. Such information may be available later during the work of the informal group.

The Alliance requested to add the information on the build levels and Mr. Hess promised to so as soon as possible. Mr. Thedinga wondered whether the type of vehicles can be better specified: For SUV and sports car a clear understanding exists but for a sedan type vehicle it may be of interest which size the vehicle is. Mr. Hess promised to deliver this information.