Editing Kylchap (section)

==Construction==
The Kylchap exhaust consists of four stacked nozzles, the first exhaust nozzle (UK: [[blastpipe]]) blowing exhaust [[steam]] only and known as the primary nozzle, with a Chapelon design using four triangular jets. That exhausts into the second stage, the Kylälä spreader, which mixes the exhaust steam with some of the [[smokebox]] gases. That exhausts into a third stage, designed by Chapelon, which mixes the resulting steam/smokebox gases mixture with yet more smokebox gases. The four nozzles of the third stage exhaust into the fourth stage, the classic  bell-mouth [[chimney (locomotive)|chimney]] (U.S.: stack).