wlbragg
commented
4 years ago Thank you for this, I will take a good long look at H135 branch and study the reference you provided, I really appreciate it.
Open HHS81 opened 4 years ago
wlbragg
commented
4 years ago Thank you for this, I will take a good long look at H135 branch and study the reference you provided, I really appreciate it.
The FCS is based on the nasal-fcs-system. The emulation seems pretty realistic, but the implementation of Nasal uses a lot of computer perfomance. A possible use of the generic-autopilot on top of the SAS is a bad idea, since the afcs of an helicopter works completely different.
Proposal: -rewite SAS-system by using filters,... instead of pure nasal. -rewrite AFCS realistic: SAS will be the base system and on top of that the CAS (both called inner loop), then on top the autopilot ( like heading hold, vertical speed hold) called outer loop. (Hint: the H135 branch of the EC 135 P2 has a already working 4-axis AFCS based on this principle)
Background: https://helicoptermaintenancemagazine.com/article/understanding-helicopter-automatic-flight-control-systems-afcs https://www.rotorandwing.com/2013/06/01/automatic-flight-control-systems/ http://helioffshore.org/wp-content/uploads/2016/08/2.5.-Ian-Scott.pdf https://www.verticalmag.com/news/understanding-your-autopilot-pt-3-html/ https://www.verticalmag.com/features/understanding-your-autopilot-pt-4-html/