When stowed




During deployment

Fully deployed


FU LL Y


DEPLOYED


Fx = K ((Lmax- Lmin) +dmin) os max

 =0 {max = 90

Fx = K ((Lmax Li) +dmin) cos O i

Fx= K (dmin) cos min


FU IN STOED




 FU I IY STO WED


SPRING FREE LENGTH


 Figure 2-11. Length of the strut when fully deployed, stowed and free length of spring

As shown in Figure 2-11, Lmax, Li, and Lmin are the lengths of the struts at various

positions. dmin is the difference between the free length of the spring and minimum

length of the strut (the amount that the spring is compressed when the strut is fully

deployed) and 0 max, 0 i, and 0 mi are the angles of the strut at various positions.

 At any instant of time the distance traveled by the angular columns and plates (Xi)

is not equal to the deflection of the spring and the springs are always at an angle with


(2.1)

(2.2)

(2.3)