-----Original Message----- >From: Ben Brockert <wikkit@xxxxxxxxx> >Sent: Nov 12, 2013 11:35 AM >To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx> >Subject: [AR] Nozzle shapes > >Anyone have further info to back this up, or Russian nozzle design >logic translated into English? Well, based on the drawing on this page http://www.lpre.de/energomash/RD-107/ , the RD-107 used a radius to describe the nozzle shape. Maybe other engines are doing the same.... Cheers, Ed L