Drag Force determination 3

[TowerEngineer]

I am a civil/structural engineer that specializes in the design of non-building structures to resist wind and seismic forces. My question is in regard to wind drag coefficients for different shape and size objects that are typically used in the aeronautical engineering community.

Can anyone refer me to a concise and authoritative source if information with regard to drag coefficients commonly used in aeronautic design? My goal is to use this information to reverse a recent trend in civil and structural engineering toward drag coefficients that I believe are unrealistically high. I am interested in Cd for wind velocities in the range of 40 to 200 MPH.

 

[Michael996]

Tower guy,

I used to design towers and crane booms. I think you limited by regulatory requirements.

Back in my day, the areas that were difficult to predict was the interference drag at the vertex of the chords and lacing.

The designs that supplied the superior drag factors, dis-allowed using the lacing as part of the column loads.

Horner is a good good choice. Both fluid dynamc drag, and fluid dynamic lift. His wife sells these books out of Washington State.

Also, Jan Roskam is another set of fine books.

http://www.darcorp.com/Textbooks/textbook.htm