simulink time stop error?

When running Simulink, it keeps stopping at t = 1.271. I'm curious about the cause. I think it's due to the landing detection algorithm in the third subsystem. Please suggest a solution.

Answer 1

[Mathieu NOE]

I believe you should change the landing test

force_b >0 should be more like : force_b <0.1

otherwise the output is true for t < 1.2 s

this seems to work on my side :

function is_landed = fcn(altitude, force_b)

if altitude >= 0 && force_b <0.1
    is_landed = true;
else
    is_landed = false;
end