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  • Users: poetix99
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  1. poetix99

    Cyclic discharge of pressure relief valve

    I have a Pressure Safety Relief Valve (PSRV) in a steam line supplying some in-house test equipment. The PSRV is intended to protect the test equipment from over-pressurization. Nominal crack/full-open pressures are 330/365 psig. During occasional trip-outs (unplanned, sudden shutdown of the...
  2. poetix99

    B-Splines: Basic Info is Desired

    I am looking for a "basic" explanation of B-splines that will allow me to: 1) understand their representation ("anchors" and "knots") 2) further manipulate them (generating X-Y pairs from spline characterization). My web searches have yielded two types of sites...
  3. poetix99

    Name the "best" engr'g companies that are gone...

    I'll claim that this is "Looking ahead by looking back", so as to justify a post here, rather than the Engr. History forum (besides there are 3x as many members of this one): Last night, while at a jazz club in Boston, I noticed across the river the building housing the (former) HQ of...
  4. poetix99

    Round Key vs. Square Key for disk/shaft fit

    (This will be posted identically on Mech. Engr'g (#404) and also on Gears and Pulleys forum.) I am trying to get any design references about the use of shaft keys with a round cross-section. We are now trying to analyze this configuration because the original design work is 30+ years old...
  5. poetix99

    Round Key vs. Square Key for disk/shaft fit

    (This will be posted identically on Mech. Engr'g (#404) and also on Gears and Pulleys forum.) I am trying to get any design references about the use of shaft keys with a round cross-section. We are now trying to analyze this configuration because the original design work is 30+ years old...
  6. poetix99

    Steam Turbine Blade Design Resources

    (I posted the same message to Aero Eng'rg forum; sorry for repetition...) I am looking for software and/or consulting resources to perform (or assist in) the aero/thermo design and analysis of a new “airfoil” profile for the rotating blades of steam turbine. Experience with turbomachinery (as...
  7. poetix99

    Steam Turbine Blade Design Resources

    I am looking for software and/or consulting resources to perform (or assist in) the aero/thermo design and analysis of a new “airfoil” profile for the rotating blades of steam turbine. Experience with turbomachinery (as distinct from wing design) is required. I used the word “airfoil” in...

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