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Old 6th Jun 2013, 12:26
  #12 (permalink)  
stressmerchant
 
Join Date: Feb 2003
Location: Earth
Posts: 68
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Thanks for some good info - I remember the drawing offices at my old work filled with lots of boards and hard working men and women. No computers ;-)

My impression is that the CAD tools sometimes separate us from the reality of design. The old designers may not have had the fancy software, but they had a lot of common sense behind them. I battle daily with young engineers who will blindly believe the numbers that the computer spits out.

A few recent gems:
"I don't care what the flight test results say, my prediction is correct. I looked up the formula in Roskam and I've double checked my maths!"

"OK, so we designed to the finite element predictions, and the finite element overpredicted the stresses by 50%. At least we know the structure is strong enough".
"Yes, but it's overweight"
"And the problem is??"

"But the diagonal tension field didn't show up on NASTRAN, how am I meant to know about it? "

Children of Magenta?
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