Reply To: Jos Koopman Conundrum

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Chris Corney

    Hi Martin,
    I was looking at my copy of David Wardale’s book “Red Devil and other tales from the age of steam” last night.
    It’s now a few years since I read it. There are some references to comparative trials between de Laval and plain nozzles, although he describes the various projects he worked on in chronological order, and the nozzle trials are mixed in with all the other aspects of design he worked on.

    Going back to my post on 29 Jan, the description of operation of the nozzles is on page 97, not 92.