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  • Users: sirbrandon
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  1. sirbrandon

    Electro-Magnetic Catch

    Hi, I bought some of these magnetic catches (part number MGSR1: OFF when attracted), but I'm having trouble wiring up one of these. I have a 24VDC 2.5A DIN rail power supply. Do I wire the leads directly to the power supply, because it does not seem to work the way I think it should i.e. the...
  2. sirbrandon

    Question on Passenger to Freight Conversion

    I have some questions regarding these type of modification works. I am an aeronautical engineer by training, but not practicing. I know some aircraft design theory and stuff, but I do not have experience with what actually goes on in the shops. I would like to know more about what goes on when...
  3. sirbrandon

    Photoelectric Sensor (or similar) for measuring velocity of moving object

    I am looking to build a system for measuring the velocity of an opaque object sliding up and down a chute, sort of like an elevator travelling along the shaft. I'm trying to figure out if I can use a pair of photoelectric sensors mounted at a pre-determined distance apart, and each will be...
  4. sirbrandon

    RBE2 Double Dependency

    Hi, I read about the dangers of double dependency when using RBE2. I have a problem (see attached pic) where I need to mount two components one the same platform, one component on the top surface, the other on the bottom surface. I tried running the sample problem with AUTOMPC ON, and it seems...
  5. sirbrandon

    Dynamic Analysis of Structure with Wire Rope Damper

    Hi, I am trying to model a avionics component mounted with wire rope dampers, and I would like to simulate the dynamic response. Anyone know of a simplified model for these dampers that I can use? Cheers!
  6. sirbrandon

    Notching during Sine Testing

    This may be a basic question, but I have been struggling with it the past few weeks. I am working on a spacecraft project (and I am new to this industry), and there are some concerns that when the spacecraft is subjected to the sine sweep qualification testing, some of the fragile equipment may...
  7. sirbrandon

    Determining Notch Profile to prevent Overtesting

    This may be a basic question, but I have been struggling with it the past few weeks. I am working on a spacecraft project (and I am new to this industry), and there are some concerns that when the spacecraft is subjected to the sine sweep qualification testing, some of the fragile equipment may...

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