IAI America LSA-L15SS - Manual (Page 28)

1. Specifications Check
22
2) Figure out the continuous operational thrust of Condition 2.
Substitute the operation pattern above to the continuous operational thrust formula.
Based on the examination result of maximum thrust, the specified acceleration is assumed as
14.7m/s 2 .
Here,
Fa = 81.15N, Ff = 15N, Fd = 51.15N, ta = td = 0.17s, tf = 0.43s, t = 0.92s
From the above, Ft is calculated as 42.49N.
Since this value exceeds the rated thrust 30N of the H8SS/H8SM, 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 = 2.0s.
Speed
Time
t = 2.0
This time, Ft is calculated as 28.82N.
Accordingly, the actuator can be used in this operation pattern.
F
a
2 㨯 t
a
+ F
f
2 㨯 t
f
+ F
d
2 㨯 t
d
t
F
t 㧩