Complex sentence: The IXV (Intermediate eXperimental Vehicle) is a project of re-entry demonstrator of the European Space Agency to validate reentry technologies for future European reusable launchers which could be evaluated in the frame of the FLPP program.
Split into simpler sentences: The IXV (Intermediate eXperimental Vehicle) is a project of of the European Space Agency. It is intended to validate re-entry technologies for future European reusable launchers which could be evaluated in the frame of the FLPP program.