Bruhn erratum 1

[rb1957]

humbly i propose this thread ...

bruhn was human and his book has errors. that is not meant as a slight against one of our "bibles". McCombs has prepared an equally valuable supplement.

almost all of us use bruhn everyday and i thought it'd be helpful to everyone to post an erratum.

 

[Sparweb]

Page A4.3, column 1, equation 3, should read

"V^2 - Vo^2 = 2as"

(first velocity term must be squared)


And then there's the previously mentioned page B1.8, Equation 3,

"...= f/F_0.7 + (3/7)*(f/F_0.7)ⁿ

Steven Fahey, CET

 

[rb1957]

thx steve

 

[Sparweb]

You're welcome, but you still get credit for such a good idea. If there's a good response to this one, I should turn it into a FAQ.


Steven Fahey, CET

 

[SuperStress]

Section C11.25 Secondary Bending Moments in Flanges (pertaining to incomplete diagonal tension analysis)

Equation (69) should have a "tan [α]" term at the end. The full equation should read:

M=(1/12) k f_s t d² C₃ tan [α]

Reference NACA TN 2661 p.50.

SuperStress

 

[planedr]

Bruhn Erratum? Gents this would be the longest thread in the history of forums......