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Organ Pipes

  1. Oct 7, 2008 #1
    Hi can anyone help me? I am researching into organ pipes, and dealing with a flue organ pipe that is 16ft long and open at the top, my conundrum is: is the organ pipe open at the bottom where the air flow enters? i can find no definitive answers, can anyone help/send me a link?
    thanks
     
  2. jcsd
  3. Oct 7, 2008 #2

    FredGarvin

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    I can't really say between the different types. Admittedly I thought there was one basic design and slight variations from that. The ones I have seen were open on the bottom. They taper down in diameter and then basically plug into the air manifold. There is a Dirty Jobs episode where they clean a pipe organ and every single pipe. Here's a link that may help:

    http://www.lawrencephelps.com/Documents/Articles/Beginner/pipeorgans101.html
     
  4. Oct 7, 2008 #3

    atyy

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    Fletcher and Rossing (http://books.google.com/books?id=9CRSRYQlRLkC, p557) state that the lowest note of an 8 ft rank produces 65 Hz pitch. If use http://hyperphysics.phy-astr.gsu.edu/hbase/waves/opecol.html, I find that a 65 Hz fundamental is produced by an ~8 ft (2.4 m) open or closed conical end.

    http://www.nazard.co.uk/organ.html#pitch states that a 2 ft flue produces middle C. They state this to be 512 Hz, but most pianists think it's 260 Hz. If I use 260 Hz in the hyperphysics calculator, I find that it corresponds to an ~2 ft (0.6 m) open or closed conical end.

    Nazard also says that a stopped 8' Diapson is only 4' long.
     
    Last edited: Oct 7, 2008
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