CS 22.443  Gust loads

CAA ORS9 Decision No. 1

(a) Vertical tail surfaces must be designed to withstand lateral gusts to the values described in CS 22.333(c).

(b) In the absence of a more rational analysis, the gust load must be computed as follows: 

where: 

P_f   = gust load (N) 

a_V  =  slope of vertical tail lift curve per radian 

S_f   =  area of vertical tail (m²)

=  density of air at sea-level (kg/m³) 

V    =  speed of flight (m/s) 

U   =  gust speed (m/s) 

K    =  gust factor, should be taken as 1.2