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  • Users: crashforce
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  1. crashforce

    designing pressure vessel

    evening chaps, Im currently working on a project that requires light weight pressure vessels. Im stuck on how to calculate minimum wall thickness for the vessels in different materials for a given pressure. I.e how much bigger would they have to be if they were steel over aluminium etc...
  2. crashforce

    air flow in a riffled tube

    evening all, im hoping some here can help. witout the use of cad for the moment im trying to calculate what happens to the air flow in a rifled barrell with regards to the rifling. i.e does the air closest to the wall corkscrew with the rifling, does the entire volume corkscrew? do the...
  3. crashforce

    lattice type beam loads

    evening all, just wondering how do i go about working out the vertical load on a lattice type beam with ends facing vertically i.e \/ .. /\ with the dots being the hinge pins. i cant figure out how to work out the load on each beam section and each pin joint at its maximum load and at...
  4. crashforce

    button headed bolt remover

    does anyone know if one of these exists? we use a lot of button headed allen key bolts at work from m3 to m8 sizes. the trouble is there used around a lot of delicate equiptment and tight conditions mean using balldrivers at awkward angles. due to these conditions when a head rounds we cant...
  5. crashforce

    supersonic waves vs hovercraft

    Evening all, not sure if this is going in the right area but you may be able to help me. For my own interest im wondering that the effects of supersonic waves would be on hovercraft travelling above the speed of sound? Putting aside other issues such as weight and skirt wear etc how would the...
  6. crashforce

    rocketry equations

    First off hi all and great forums, ive been skulking in the background learning a hell of a lot for a while now and finally decided to register. I hope someone on here will be able to lend an ear to the problems im currently facing. although i have no previous experience in the aerospace...

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