Recent content by metal249

I don't need exact numbers, just numbers that are well under the limits of what the material can withstand, efficiency is not a factor in an ultralight aircraft. I just have never worked with aluminum, and I don't have a working knowledge of its strength. This aircraft will have a ballistic...

I believe that the "bearing yield strength" is the pressure at which permanent deformation occurs(the beam does not return to it's original shape)and the "ultimate bearing strength" is the pressure at which failure will occur. The 7' segment of tube which is suspended on both ends by strut and...

Greatly appreciate the info, I think I'm getting this. I'm trying to determine size and diameter of the wing tubing. It has to withstand +6 and -4 g's as a safety factor, with the operating limits of the airplane being +4 and -2 g's. The aircraft fully loaded will weigh 480lbs, so I have two...

Hello all, new member and amateur engineer from Tucson, AZ. I am working on a homebuilt, part 103 legal, ultralight project. I am trying to find the formula for deflection of an aluminum tube. I need to know how much weight will cause permanent deformation of a tube suspended between two points...