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  1. southsea

    Damped Vibration

    Thanks Tom, The system itself is quite simple in its elemental state, effectively a C shaped component formed from 1/8" aluminium sheet. Therefore if I apply Archimedes principle as a rule of thumb, this will give me the effective mass, therefore allowing the calculation of Fn at the decreased...
  2. southsea

    Damped Vibration

    I have been tasked with a vibration analysis for some retrofit equipment to be fitted to a commercial aircraft. The actual derivation of the harmonics in each of the axis I have had no problem with using classical methods and software. However all the calculations I have used deal with responses...
  3. southsea

    Specific Heat of MIL-PRF-7808?????

    warrenelec, I have this data on a graph in units CHU/lb degree C. at -50 its 0.37 0 its 0.414 50 its 0.46 100 its 0.51 150 its 0.568 200 its 0.63 250 its 0.708 Linear linear scale, X axis = t degree C, Y axis = specific heat, CHU/lb degree C. Plot it on regular graph paper X axis 5mm = 10...
  4. southsea

    Alocrom Chemical Conversion

    Thanks PK, we had a turkey lurkey sky falling in moment here but its all cleared up now.
  5. southsea

    Alocrom Chemical Conversion

    I am being told by a senior Airbus Engineer the I must anodise a repair to a fuel system component which I supply. His reason for this is that the Alocrom is not compatible with aviation fuel. I do not believe this for one instance. However I have been informed that I need to use the Aircraft...

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