Home › Forums › Exhaust Systems › Porta's Derivation of Lempor Theory › Reply To: Porta's Derivation of Lempor Theory
I have been looking at work by Nigel Day on the Porta type of design. He strongly advocates divergent nozzles at a 7.25 degree outward splay. Which seems to be what was done on the ASTT S160 design.
Simple question – Why?