X hits on this document

Powerpoint document

Antennas and open-frame structures - page 15 / 24

92 views

0 shares

1 downloads

0 comments

15 / 24

Antennas and open-frame structures

   Open frames

   Pairs of frames.   Two-dimensional.   Normal wind   

1 CD(1) is drag coefficient of upstream frame (downstream frame influences upstream frame)

CD(2) = CD(1) [ 1 + 2]

2 CD(1) is drag coefficient of downstream frame

approximately, 1 1,      

s

b

For circular members, equivalent solidity to calculate 2 , e 1.2 1.75

0 < < 0.5

Document info
Document views92
Page views98
Page last viewedSat Jan 21 00:36:32 UTC 2017
Pages24
Paragraphs289
Words920

Comments