Thanks guys!
Now we have LSAS overspeed protection is AFS is off or unavailable (like in this gif, i slapped the OVRD switches down to kill AFS/ATS speed protection)
basic logic:
- engages only if AP is off
- speed target varies based on throttle positon
- uses speed rate for control to prevent endless pitching up to stupid attitudes
- engages if ATS protection is unable to correct the situation, or ATS is unavailable
- takes the place of AFS speed on pitch overspeed protection as AP will not come on its own, fd bars will stIll show FCC guidance unless AFS OVRD is off (like in the gif, then speed protection from AFS is non functional)
- pilot can defeat it by pushing the yoke hard, the LSAS inputs as usual are summed to the pilots inputs
- pilot can increase the recovery rate by pulling back further, as LSAS is only able to use 5 degrees of elevator
- LSAS resumes normal Pitch attitude hold/pitch rate damping mode after recovering from overspeed.
- LSAS does not protect slat/flap/gear overspeeds!
- LSAS does not protect against Vmin/Vstall like this, there is alpha based protection that I'll model later.
Obviously its more complex than this but thats the summary. See FCOM for details, its modelled as per that.
2 examples in this gif.
What a complex flight control system this plane has, but its been good fun to model!
Kind Regards,
Josh