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  1. inertia4u

    Saturday Morning Question - Torsion

    OK, lets say I have a Stanely 25' tape measure. It doesn't have to be Stanely, but just pretend it is. The tape cross-section is a little concave, essentially creating a shallow "u" section. Now, let's say that I extend that tape measure out, while holding it in my hand, and effectively...
  2. inertia4u

    Looking for Neeham (Crippling) Journal Entry

    Ladies and Gents, I am looking for a pdf copy of R.A. Needham's entry into the following Journal: "The Ultimate Strength of Aluminum Alloy Formed Structural Shapes in Com0pression," Journal of Aeronautical Sciences, Vol. 21, April, 1954. Does anyone have a copy that they can upload to a URL...
  3. inertia4u

    Beaded Shear Webs - Your thoughts

    Ladies and Gents, How do beaded webs help in shear buckling problems. For example, assume that I have a large spanning web = 2L. Assume I have an actual stiffener riveted on at located at x=L. And assume that the web, spanning length L (either side) buckles. Now finally assume that I place...
  4. inertia4u

    What Ever Happened to RAPIDC?

    I'm curious, I can't seem to find the FAA program Called RAPIDC (Repair Assessment Procedure and Integrated Design - Commuter)? I've found numerous links only to PDF files talking about the program, but I can't seem to locate the actual program. Anybody know where I can find it, or what...
  5. inertia4u

    Bathtub Fitting Analysis: Fokker vs Lockheed 88a

    Ladies and Gents, I am sure a lot of the stressers here have come across the ol' Lockheed Memo 88a dealing with analysis of bathtub fittings. However, I am looking for a copy to a reference that was used in a report that I have in front of me: Fokker Data Sheet Th-3.584. I presume that this...
  6. inertia4u

    Fitting Factor and Fail Safe Conditions

    Just a quick question. Assume I have a fitting that is designed to carry both primary and fail safe loads. Also assume that a 1.15 fitting factor is deemed appropriate for this fitting for ultimate analysis. The question is: Is it necessary to use a fitting factor for the fitting when...
  7. inertia4u

    Pilot error, structural failure percentages

    I just came across a short entry in Aviation Week's "The Weekly of Business Aviation" which states that pilot error can account for up to 80% of all fatal accidents involving aircraft. My question is, what constitutes the other 20%? Does anyone know the break down percentage wise...
  8. inertia4u

    Any Good Submarine Stress Books out there?

    I am interested in any Stress Engineering Handbooks that might be out there that is used in the sub industry - something along the lines of Bruhn (aircraft stress). Can anyone recommend a good book?
  9. inertia4u

    I need a good submarine stress engineering handbook?

    I need a good submarine stress engineering handbook? Anybody have titles to any good books that they came across? Thanks, Nert

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