FRed Baron Sim

...theFBSiM’s feedforward autothrottle isn’t just a PID loop — it’s a complete control architecture modeled after real turboprop flight operations. Our equilibrium lookup table is calibrated from actual TBM 940 flight ops data (Daher published specifications plus in-sim observations), so when you dial a target speed, the system knows immediately where the throttle lever needs to sit. A small PID trim keeps you honest with the wind, fuel burn, and turbulence — exactly the role PID should play. The result: 45-second captures on 20-knot target changes, ±1 knot steady-state accuracy, and zero oscillation. Pilots pre-arm a cruise target before takeoff, and it’s honored at level-off. Switch between MAN and FLC modes, and each remembers its own target. Press the approach, and the system quietly drops out of climb mode for you. Dial above 250 and throttle firewalls; monitor engine ITT to stay just below redline. Every state change comes with an audible voice callout so you always know what the system is doing — even when your eyes are outside the cockpit. It’s not a sim hack—it’s real aerospace control theory, applied the right way in a home cockpit.