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Joined 1 year ago
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Cake day: June 10th, 2023

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  • Everything past the dotted line is the point where the material won’t go back to its original shape.
    Example: You can push on the hood of your car all you want, it’ll flex, and go back to its original shape (elastic deformation); but stand on it, and it’ll dent (plastic deformation).















  • It’s a customer option (hush kit) for certain engine types, and it’s supposed to reduce exhaust turbulence, thus reducing noise. However, it’s usually the high pitched whine of the compressor that most people hear. Most companies don’t want to pay for it unless they’re required to fall under certain sound levels for certain airports at night. For those, it’s often cheaper to not fly that route at night, or use a quieter airplane (such as a CRJ or ERJ with GE CF34 engines).