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Recent content by EngineerMicah

  1. EngineerMicah

    Standards for airborne equipment?

    I have done a number of camera installation STCs for part 23 aircraft and helicopters. For the camera and its supply Kontiki99 is correct. You do not need to qualify the camera to DO-160 (assuming it is not used for flight), you just have to show that the camera system does not interfere with...
  2. EngineerMicah

    metal part, STATIC ANALYSIS

    For fittings, it is hard to beat the analysis presented by Nui, in chapter 7. FEA should always be taken with a lack of trust untill you can prove otherwise with model specific testing or a conservative analysis. The FAA does not accept FEA/FEM without model verification based on test results...
  3. EngineerMicah

    Errors and Omissions insurance for Aviation Engineering

    Well, I found E&O insurrance and for a small firm it works out to about 10% of gross sales.... no wonder no one said, yeah we have that. Micah Hamley, PE Aeronautical Engineer & FAA DER - Keep those old planes flying! -
  4. EngineerMicah

    Errors and Omissions insurance for Aviation Engineering

    Hi - I am trying to get E&O insurance for a small consulting firm. Since AIG is not writing policies!!! Can someone with E&O insurance give me a name of someone that will do E&O for aviation?
  5. EngineerMicah

    Fasteners interchangeability

    If the SRM does not list an approved substitution, you need to get an FAA DER to approve it. Some of us have some data, but I have not found a good website that lists all the propriatary data. Some of it you can find in MIL-HNBK-5 in chapter 8. Micah
  6. EngineerMicah

    "True Negative Drag" in bicycle wheel brochure - possible?

    The 'wheel' could have a net drag in the direction of travel - but the frame would likely have more drag than normal - so the net effect may be lower overall drag. A bike and rider are a system its the whole thing, not just a component. Sounds like marketing.

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