Crash Course in Propeller Aerodynamics Concerning the last Developer Q&A, I’m not entirely sure the developers understand the problem of “missing propeller drag” in the sim. Seb was talking about drag from internal engine components instead of aerodynamic propeller drag. In all fairness, the drag of…

[image] PZL104: The excessive lift issue affected all aircraft, not only the turboprops. I was flying the C208 last night, for a few hours, and it definitely feels more floaty than it did before, even after the hotfix. I never modded the aircraft directly, so my files are as they were from t…

[image] hobanagerik: The approaches I used to do now require a forward slip to lose altitude. That’s nothing to do with the prop, though. That might have something to do with the prop as well? If there is a lack of drag the aircraft is going to pick-up speed.

Possibly, although I guess there was no prop drag before WU3, when the flaps bug was introduced. It’s also possible I just need to trim more, and have just got used to other aircraft.

I don’t see how propeller drag makes the AP unable to follow an RNAV approach.

[image] Dalwhat: how propeller drag makes the AP unable Between missing propeller drag, that is missing deceleration and auto pilot is control theory, see Control theory - Wikipedia If you have an AP that wants to follow a control regime and you have an actuator that can not do what is neede…

anon98649194: The whole point of control theory is The whole point of control theory is to have deceleration and acceleration. How you get your deceleration and acceleration is not important for a working control regime. But that the control regime knows what the actuators can do (have a cor…

anon98649194: that you know little about control theory I am doing it for 20+ years on my job. Ever heard of Kalman filter, Acoustic Echo cancellation, alpha-beta filter or even the simple PID? It is always the sign of the weak in the field, this “it is clear that you know little”. Tell me,…

anon98649194: you are calling drag an actuator Okay, I use tiny steps. Definition actuator: ’ An actuator is a component of a machine that is responsible for moving and controlling a mechanism or system, for example by opening a valve. In simple terms, it is a “mover”.’ Do you understand? N…

anon98649194: since it is abundantly clear that you do not know control systems at al If you say so. But look at one of my conference papers and find the control theory there. This is from 2004: http://www.andreadrian.de/kalman_filter/irs2004_adrian.pdf Most of my work is not published outs…

Missing / Inaccurate Propeller Drag

Bug Reporting Hub Aircraft & Systems

CaptainRude91 March 17, 2021, 4:57pm 33

@PaulFalke @RivetingFall4

If you guys are done arguing, can I have your expert opinion on this: