IAI America LSA-W21SS - Manual (Page 35)

21
Test condition [2], “thrust during continuous operation.”
Apply the above operation pattern to the aforementioned equation of thrust during continuous operation.
Based on the examination result of maximum thrust, the specified acceleration is assumed as 19.6 m/s
2 .
Here,
Fa = 512 N, Ff = 120 N, Fd = 272 N, ta = td = 0.127sec, tf = 0.873 sec, t = 1.277 sec (including
stabilization time tc of 0.15 sec)
From the above, Ft is calculated as 208.02 N.
Since this value exceeds the rated thrust 200 N of the large linear servo actuator LSA-W21SS/LSA-
W21SM, 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 = 1.5 sec (including stabilization time tc of 0.15 sec).
This time, Ft is calculated as 191.9 N.
Accordingly, the actuator can be used in this operation pattern.
Speed
Time