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  1. willcambridge

    V shape cut out??

    I didn't look at the proE file but the drw looks complicated. I would probably consider using several features to achieve the final result, rather than one or two highly complex features. This method might or might not mimic the manufacturing process; but it might be a quicker way to get a good...
  2. willcambridge

    Text on magnetohydrodynamics

    I'm looking for literature to help educate myself on the engineering of magnetohydrodynamic systems. I am interested in MHD pumps using liquid metals and/or ionic liquids. Ideally, a reference would give a first cut at the theory, with a strong focus on practical applications such as the above...
  3. willcambridge

    Mechanical Engineer needs relay or diode

    Thanks for the responses. The mystery component in each unit on the 'chain' is a thermo-electric device with internal resistance that results in the above specs. I have seen reference to much smaller 'numerical relays' used on microprocessors. I am guessing that is a digital technique and is...
  4. willcambridge

    Mechanical Engineer needs relay or diode

    I am a mechanical engineer, designing a small aerospace device with a simple electronic circuit. I was working with an EE but he left with work uncomplete, and now I have to finish in a hurry. The device is meant to function in a chain: think of christmas tree lights. I need to select a...
  5. willcambridge

    Outgassing spec - Air Force

    Does anyone know where to find an outgassing specification for the US Air Force? For example, I have this for NASA: NASA SRP-0022A Total Mass Loss (TML) 1% Collected Volatile Condensable Material (CVCM) 0.1% Values are "not to exceed" I am looking for something like that for Air Force...
  6. willcambridge

    Wildfire 3.0 Drawing mode: decimal place display

    I have -- and no doubt will again!
  7. willcambridge

    Wildfire 3.0 Drawing mode: decimal place display

    Yes, that's it. Thanks. Where did that info come from?
  8. willcambridge

    How much time do you spend with Customer Service?

    "Art without engineering is dreaming; Engineering without art is calculating." That's an awesome quote. Mind if I steal it?
  9. willcambridge

    How much time do you spend with Customer Service?

    Blimey, Will you elaborate on this: <i>If the current system is any of the mainstream mid-range systems (SolidEdge, Inventor, Pro/E (Wildfire), One Space, etc) then the answer is "probably not". </i> I am using Pro/E Wildfire 3.0. For comparison, I have been on the phone with tech support on...
  10. willcambridge

    Wildfire 3.0 Drawing mode: decimal place display

    I am making my first drawing on a new platform (HP nw8440 laptop I believe) and am having issues with display of dimension digits after the decimal: they show up with the minimum number of digits entered (apparently), and do not correspond to the number in the dimension --> properties --> number...
  11. willcambridge

    How much time do you spend with Customer Service?

    I am a CAD user who is also responsible for administering the system at my company. I am trying to evaluate whether it is worthwhile to switch CAD packages. I would like to know how much time Solidworks users spend with technical support. I am interested in questions like these: Are you a...
  12. willcambridge

    What defines a wiring system?

    Thanks for the tip-off on the problems with kapton - I'd never heard of that one before!
  13. willcambridge

    What defines a wiring system?

    Hi, Bit of a vague question, I appreciate any help - my company is writing a proposal on a method of embedding an electrical wiring system within a structural element, for aerospace applications. I am writing the part of the work plan describing how we will characterize the requirements on the...
  14. willcambridge

    Design Reviews - best practices w' limited resources

    Thanks all, this was helpful, especially the mention of the red team and the design/project review distinction. Best, Will
  15. willcambridge

    Design Reviews - best practices w' limited resources

    True - hiring the right people is the key and should probably be pursued. Not sure how quickly that will happen, though, since the need is somewhat irregular. Thanks for the input.
  16. willcambridge

    Design Reviews - best practices w' limited resources

    Hi - my company is a new, small R&D contractor, primarily for gov (DOD, NIH, etc). We have had about a year of doing one-off prototypes, now we need to start doing real version control and design reviews. The problem - we don't have a lot of experience in what a design review should be! Who...
  17. willcambridge

    Intro book on Satellite design esp. Thermal management

    Hi, I am on the hook for some work for the Air Force and would like to educate myself on small satellite design, especially thermal design/management: payloads that create thermal challenges, thermal management techniques employed (heat pipes, conduction, efficient space radiation) etc. Looking...
  18. willcambridge

    Displaying User-defined Part Params in Assembly BOM

    I am just getting into creating assembly drawings and BOM's in ProE (Wildfire 2.0), it has been slow going. Trying to figure out how to display the material name for each part in my repeat box. I am storing material name in a user-defined param "MATL", which is loaded from the assigned material...
  19. willcambridge

    software crashes in ProE, Solidworks

    Hi, I have a question for CAD users - I use ProE daily and am frustrated by its tendency to crash in the middle of a session. This is a hassle because of the time it takes to load the software again, and even more importantly, losing unsaved work. I'm like to know if Solidworks has this tendency...
  20. willcambridge

    penny-sized 2-d slide bearing

    clarification - the bearing I need can be thicker than a penny (but not much thicker than .25" or it becomes cumbersome)

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