CS-VLA 369 Special conditions for rear lift truss
ED Decision 2003/18/RM
(a) If a rear lift truss is used, it must be designed for conditions of reversed airflow at a design speed of -
V in m/s M/S = Wing loading (kg/m2)
M in kg
S in m2
g in m/s2
(b) Either aerodynamic data for the particular wing section used, or a value of CL equaling -0.8 with a chordwise distribution that is triangular between a peak at the trailing edge and zero at the leading edge, must be used.