Reply To: Porta's Derivation of Lempor Theory

[Chris Corney]

Martin,

Further to the post above, I was thinking that the convergent-divergent shape of a hyperboloid might be of advantage when designing an ejector.
A chimney would have to be machined internally, and I have been advised that the typical reach of a profile follower attachment is about 125mm.
The exhaust on the S160 was designed before I joined the group, and I understand that the nozzle angle was carefully considered. The exhaust certainly performs succesfully.
Regards
Chris