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  1. birdstruck

    Birdstrike Analysis

    feadyna, you wrote: 'I am working on birdstrike analysis on aircraft structures, using Gelatin bird. Could any one describe the method of ALE apporach to carry out the birdstrike analysis using ls-dyna.' ALE Approach: I am also not familiar with this terminology. I am familiar with the use of...
  2. birdstruck

    Using Accelerometers for stability of aircraft.

    I believe that IRStuff may be correct in saying: You are not the first to think this, nor the last. Given over 50 years of trying, no one has successfully fielded such a system. However, I have seen a physical working prototype in the labratory of a relatively less known university in which...
  3. birdstruck

    Overhead travelling cranes

    I would agree that an electric system is preferable due to the common power system lower cost. A typical top running system would have two clamps (attached to the end truck) which sandwich the rail from the sides. The brakes which I have seen most frequently are usually designed to be locked...
  4. birdstruck

    REPLACING SPOT WELDS WITH RIVETS

    I am currently involved in baseline testing to evaluate static and fatigue strengths of aluminum joints with aluminum substrates of 0.020 to 0.050 thickness. We are comparing the 'knockdown' factors for resistance spot weld, diffuse laser weld, and friction stir weld methods for comparison with...

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