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Recent content by eng3000

  1. eng3000

    Working With Constant Rotation of Contract Engineering Help

    I've just done an MSc project on inducting contractors into aviation maintenance organisations. To cut a very long story short: Use people doing the actual job to design a good induction; pace it, so it can be assimilated over days, weeks or months; start only with the absolute essentials...
  2. eng3000

    Guides on Aircraft Electrical Wire Material and Insulation Types

    Your first port of call for what you describe (civil aircraft) will be the aircraft manuals, specifically the wiring practices and hook up lists. There you should find the original wiring type specification for almost all wires on the aircraft wiring diagrams, excluding 'furnished' wires. The...
  3. eng3000

    Guides on Aircraft Electrical Wire Material and Insulation Types

    I would suggest you contact a manufacturer of TKT (or other kapton wire) re your specific queries, e.g.: http://www.carlisleit.com/v2/productDetail.asp?catid=1&serid=10&productID=20 (formerly Tensolite) Depending on your application and the specific installation, performance and regulatory...
  4. eng3000

    Guides on Aircraft Electrical Wire Material and Insulation Types

    "So is Polytetrafluoroethylene/Polyimide ... the dreaded Kapton?" Polyimide is the generic chemical description for substances which include Kapton (a trademark name). The most problematic Kapton wiring is just Kapton wound over the conductor with or without a paint overcoat...
  5. eng3000

    Black Box

    rb1957 The datalink concept you suggest is being introduced in the 787, nevertheless significant security issues remain as raised by the FAA. http://www.flightglobal.com/articles/2007/09/21/216948/hackers-hardwalled-from-787.html The technology is therefore with us, but as with all such...
  6. eng3000

    Simple Air / Air Heat Exchanger

    Can someone please give a basic formula for calculating the practicality of using a concentric tube counterflow heat exchanger for building heat recovery purposes. A customer would like to bring in fresh air and exhaust stale air from a room of around 250m2 size. This is not my area of...
  7. eng3000

    Plastic Tank in a Classified Area

    Regarding silicone conductivity, that depends upon exactly which of the very many silicone fluids you're dealing with. Thermally conductive, yes, but many silicones are not electrically conductive and are in fact used as insulators. Generation of charge during transfer would depend on a...
  8. eng3000

    A310 Fuselage Cross Section to find Inertia and Centroid Values

    Do you have an actual aircraft to work on or is this for something like an STC? If you have an actual aicraft, then ask the owner/operator to request the relevant drawing from Airbus. The same goes if you have a potential customer. The aircraft IPC may be able to give you some useful...
  9. eng3000

    sealant removal from a blind fuel tank

    Do you know which composition/manufacturer of sealant it its? Has this been incorrectly applied (recently?) or has it migrated there though creep or being dislodged? If practical and safe, you might like to try softening it first with a solvent before trying again with air or water. For a lot...
  10. eng3000

    Electric Explosion Proof Scissor Lift/Cherry Picker

    Here are a couple of links obtained by googling canada scissor lift explosion proof http://www.aerialequipmentsearch.com/ http://directory.canadianmanufacturing.com/ then search hoist explosion proof I think there's a good chance that one of the dealers mentioned can help.
  11. eng3000

    Electric Explosion Proof Scissor Lift/Cherry Picker

    You can try here for starters. You don't say where you are, but this manufacturer can likely give you some dealer info. They supply technology for converting standard equipment into explosion proof equipment. http://www.pyroban.com/
  12. eng3000

    Niobium Electroplating Conditions

    Thanks, it looks like this article would be a good place for further info.
  13. eng3000

    Niobium Electroplating Conditions

    I'm researching the electroplating of Niobium on top of an initial electroplated finish (on a non-conductive base). As a method, I expect to use a molten alkali metal chloride solution. I can find some indicators of required temperature, but so far none on the 'electro' setup, i.e. potential...
  14. eng3000

    Niobium Electroplating Conditions

    I'm researching the elecroplating of Niobium on top of an initial electroplated finish (on a non-conductive base). As a method, I expect to use a molten alkali metal chloride solution. I can find some indicators of required temperature, but so far none on the 'electro' setup, i.e. potential...
  15. eng3000

    Fuel tank wire testing - best practices

    A TDR is great if you have one. Not all MROs do. But great that you solved the problem. To MiketheEngineer. Without doing a very long post that goes way off thread, there are finally a lot of long overdue issues with wiring in tanks and aircraft wiring in general now being addressed. It will...
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