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  1. L

    Wing's Ribs , how many, and space between them ?

    Yes, i've done like you said, for the elliptical distribution , but, the schrenk's approximation i'm using, is an average between the trapezoidal and elliptical distributions. So, for the elliptical distribution , is like you said , just needs the local chord at the same spanwise station for...
  2. L

    Wing's Ribs , how many, and space between them ?

    No problem man, thank you for all the help , I'll try send him a PM. I will ask you one more thing , is about the aero loads, I've found the critical loads using schrenk's approximation ,but my wing is both rectangular and trapezoidal , then what i've done to use this approximation was break...
  3. L

    Wing's Ribs , how many, and space between them ?

    I already have the lift distribution , I've used schrenk's approximation for it, I also have the critical loading cases, I'll try to analyze and see what could be the best choice, I'd thought this sizing should be done using some formula or some kind of rule. I have some project kind like this ...
  4. L

    Wing's Ribs , how many, and space between them ?

    I'll try to find something about this trade-off , i've read a few things already but nothing like a mathematical expression for it. Man i really don't know , I haven't chosen this structure, was another guy , i'm just working with he has already chosen, the team had started the project before I...
  5. L

    Wing's Ribs , how many, and space between them ?

    hey, thanks for the answers, here goes some more information. The wing spaw is 2000 mm , 800 mm rectangular and 1200 mm trapezoidal, the biggest chord length is 280 mm and 140 mm the smallest, the airfoil is S1223 (Selig), the total weight of the airplane was estimated to be 10 kg. The máx...
  6. L

    Wing's Ribs , how many, and space between them ?

    Hey guys, what's up ? , i'm projecting an airplane's wing for SAE aero design . i've already chosen my airfoil, the wing chord, and other parameters, but I need to know how many ribs should I use and the space between them , does anyone know some book that talks about it ? , I've looked a lot of...
  7. L

    Schrenk's approximation

    Thanks man, i think I got, I have now one more question, about the ribs, I've already chosen the airfoil I'll use, and also the wing chord, but I'm trying to find some book that talks about how many ribs I'll need or the space between them, and also the ribs thickness, does anyone know some book...
  8. L

    Schrenk's approximation

    Hi guys, i'm mechanical Engineering student, and this year we made a team to participate of SAE Aero Design competition. I'm in charge to project the wing, and i'm using Schrenk' approximation method to determine overall span-wise lift distribution, the problem is that our wing , will be both...
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