IAI America LSA-S10SS - Manual (Page 29)

1. Specifications Check
23
2) Figure out the continuous operational thrust of Condition 2.
Substitute the operation pattern of the previous page to the continuous operational thrust
formula.
Based on the examination result of maximum thrust, the specified acceleration is assumed as
19.6m/s 2 .
Here,
Fa = 97.52N, Ff = 25N, Fd = 47.52N, ta = td = 0.10sec, tf = 0.65sec, t = 0.85sec
From the above, Ft is calculated as 43.16N.
Since this value exceeds the rated thrust 25N of the S8SS/S8SM, this actuator cannot be
used in the aforementioned operation pattern.
Let’s lower the duty and see what happens.
Repeat the above calculation based on t = 2.6sec.
Speed
Time
t = 2.6
ta tf td
This time, Ft is calculated as 24.68N.
Accordingly, the actuator can be used in this operation pattern.
F
a
2 � t
a
+ F
f
2 � t
f
+ F
d
2 � t
d
t
F
t �