I reckon the Payen was a future developement. The current flying Komet replica was/is just like the WW11 rocket fighter. See
www.sml.lr.tudelft.nl/home/rob/me163.htm for pic of it in flight also list of existing Komets and info,history etc. Good stuff. Oh well, tried that link but got wrong site....best just Google for "me163 komet replica" and that`ll take you to it.
