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  1. rlara

    How to create a table of X,YZ Points for Inpection?

    Not a bad idea.. I was also thinking of puting it in my FEA software meshing the surface with a small size then getting the nodal data out, that should work similar to the stl option. But it looks like we found someone to do the inspection let see how it comes out. thanks rlara
  2. rlara

    How to create a table of X,YZ Points for Inpection?

    Yes exactly Fivever for me to get a table and then for the inspector to punch in each number in to check it so I guess that would total sixever. So knowing this i will have to convince my boss to try something new like a laser scan instead of having us do all this number typing. If I can’t...
  3. rlara

    How to create a table of X,YZ Points for Inpection?

    Handleman: Actually I was looking for a way to select several points and get the coordinates from them. The macro you sent seems like it would work well for small number of points but for this application it would take for ever. The only thing ive done until now is made a Grid on the surface...
  4. rlara

    How to create a table of X,YZ Points for Inpection?

    Anna: Our CMM system is kind of outdated so there is no option for import of iges file. Handleman: Ran the macro and it works great although its still a lot a work as we are talking about 1760 points or so. I think best option would be to have some one else laser scan the component and...
  5. rlara

    How to create a table of X,YZ Points for Inpection?

    Theophilus: First nice website, looks clean.. Well i could do that maybe put the model next to the CMM and have the inspector check each point as he goes. Or maybe copy/paste that into excel and print out a table. But that it self would be a lot of work. Do you know of a way of retrieving...
  6. rlara

    How to create a table of X,YZ Points for Inpection?

    Hi all: Im trying to create a table of X,Y,Z points in solidworks so we can inspect a surface. Optimally im looking for some way of placing grid points on the surface, then creating a table of X,Y,Z coordinates so our inspection department can inspect from this table. Ideas I have is to...
  7. rlara

    Properties for LN2 Pr and k

    Im looking for properties of LN2 at boiling point -195 C 78.15 K. Primarily looking for Pr and k. any help would be appreciated. Rlara
  8. rlara

    Heat transfer in satellite components

    All: Thanks for your opinions, I looks like the question should have been, "Book recomendations for Spacecraft thermal Analysis". I also found this book wonder if you have any coments on it. Spacecraft Thermal Control Handbook: Fundamental Technologies by David G. Gilmore Looks like its a...
  9. rlara

    Heat transfer in satellite components

    Patricia: The component it self is a passive microwave antenna that is machined out of aluminum. There is certain amount of power going in to it to transmit a signal. Most of the power will be passed through the antenna and released as microwave energy, but because the antenna is not perfect it...
  10. rlara

    Heat transfer in satellite components

    IRstuff: No class just want to get more detail in to thermal analysis i am just starting out so my questions may seem pretty basic. The problem may seem like a book problem, the way im setting it up is just to make it easier to post. I want to get a general knowledge of what effects i...
  11. rlara

    Heat transfer in satellite components

    Hi all: A component inside a satellite enclosure needs to disipate Y amount of power through radiation. If I need to determine X amount of surface area needed to disipate Y amount of power through radiation is it a good estimate to assume that all power is disipated in to an black body? and...
  12. rlara

    Forged Aluminum 7075 Alloy at T, lookin for T7352

    We have ordered a large forged aluminum billet that will be used to machine a component. We usually order thick plate for our components at the requested temeper but due to the size of the component we were recomended to get a forged billet close to the components final dimensions. The billet...
  13. rlara

    Reasons to switch to Algor

    Update: To all reading this post, I did get a call from Sam Murgie at Algor regarding adding extra features to the Random Vibration module; they said they may be able to add this for the October release. One of the big reasons I changed from Cosmo to Algor because of there customer support...
  14. rlara

    Reasons to switch to Algor

    Garland: Thanks for the response, Im up to date in with my license and have tried to get some help with this from Algor but was told from there tech support that the results i was looking for could not be obtained in Algor or in another packege. But to my surprise Ive seen these results...
  15. rlara

    Reasons to switch to Algor

    Gbor: Actually I dont have NEi Nastran but am trying to get my boss to buy it. Most of the analysis I do are random vibration analysis. Beleive me algor has helped out allot but ive seen some features in Nastran that i have not been able to recreat with Algor. In NEi nastran if you run a...
  16. rlara

    Reasons to switch to Algor

    Jdipal: I was also in your same situation, i was using cosmoworks to do linear static analysis but then was limited by the need to combine elements and run dynamic analysis. So we bought algor and have been using it for the past three years. As mentioned before there have been allot of good...
  17. rlara

    What is the Peak G level during Random Vibe Testing

    TTFN and Frank: I remembered seeing that some where, thanks for showing me that. So that shows that Miles equation cannot be used in reverse, If so then the method stated above is not valid. Correct? Now from your experience what would be a valid method to determine the acceleration...
  18. rlara

    What is the Peak G level during Random Vibe Testing

    Frank, thanks for your comments. The aplication here is also space, and pretty much all the test I have done have notching in them. Now its not a requirement to notch but they allow notching in order to not over stress the unit at its natural frequency. Some times I don’t really understand...
  19. rlara

    What is the Peak G level during Random Vibe Testing

    Frank: Thank you for your response. Yes, I mean 100 G peak (3 sigma) response at the natural frequency. What I would do is notch the input profile with the controler. The way Im using miles equation is as follows: If we want to notch to 100 G peak (3 sigma) I would back track from miles...
  20. rlara

    Peak G level achived during Random Vibe test.

    Hellow everyone: I am trying to determine the peak G level achived during a random vibe test at the main natural frequency. Im using miles equation to estimate the peak acceleration. I ran a low level random vibe test to determine the natural frequencies of the unit and also the Q's. I had to...

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