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  1. jgm

    Aircraft Windows

    I have noticed that on commercial aircraft all the windows have what appears to be a tiny hole in, presumably, the inner skin at the bottom of the window. What is this for?
  2. jgm

    F1 Engine Bearings

    The 2001 Asiatech F1 engine used a one piece crankshaft running in six caged roller bearings. The cages could be split for access.
  3. jgm

    Aero engines - most cylinders

    What is the largest number of cylinders ever incorporated into one engine? I've seen references to 48 but can't find anything specific.
  4. jgm

    Gasoline vs. Diesel Turbo longevity

    A lot of commercial diesels spend their working lives runnning continuously for very long periods which is ideal for longevity. They don't do stop-start motoring with attendant cool-hot-cool cycles like so many gasoline engines
  5. jgm

    racing wax

    Is the paint on an aircraft aerodynamically necessary, or necessary for the protection of the skin of the aircraft? I'm just wondering how much a typical paint covering for, say, a 747 weighs. Are the passengers paying so that the airline can fly a ton(?)of advertising hoarding on every trip?
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