Stop fighting the stick: auto-trim, without dumbing down the physics

June 28, 2026 · flight

A pilot wrote in: flying felt like a wrestling match — he was forever hauling back on the stick just to keep the plane from mushing out of the sky. He's right, and the fix isn't a worse flight model. It's the one thing every real aircraft has and ours didn't: trim.

Why it was fighting you

Warbirds flies on a proper six-degree-of-freedom model — lift and drag built up from angle of attack, a real stall, pitch and roll damping, the same coefficients the server and your browser both integrate. We're proud of it and we're not about to water it down.

But that model has a consequence most arcade flyers hide: an untrimmed wing only holds its own altitude hands-off at one particular speed, and for these fighters that speed is fast — up around 370 km/h. Fly any slower — which is most of a dogfight — and the wing doesn't make enough lift at its resting angle, so the nose sinks. To stay level you have to hold a constant pull. Forever. That's not difficulty; that's a real airplane without its trim wheel set, and it's exactly the wrestling match the feedback described.

Real pilots don't hold back-pressure for a whole flight. They roll in a little nose-up trim and let go. We just never gave you the wheel.

Auto-trim, and what it doesn't touch

So we added it — and made it automatic. Take your hands off the pitch and the plane eases the nose to where it holds the horizon, and keeps it there. You can look around with the mouse, walk your sights onto a target, or just cruise to the fight without sinking the whole way.

A fighter cruising hands-off and level over the island at night, the heads-up gauges showing speed, altitude, throttle, a 0.9 G load and the TRIM strip holding a touch of nose-up — Hands off the stick, holding altitude on its own — the new TRIM strip sits just under the G readout.

The important part: the physics didn't change at all. Auto-trim doesn't add fake lift or bend the stall — it just supplies the gentle, steady elevator you used to hold yourself, and folds it into your pitch command. The flight model integrates the same number it always did; the only difference is that your hand isn't the thing holding it. Our server-and-browser parity check still passes byte-for-byte, because the model it checks never moved.

It bows out the instant you take over

The thing we cared most about: trim must never fight you. So its authority fades the moment you ask for something. Pull into a climb, push into a dive, or roll hard into a turn and the assist gets out of the way completely — you have the full stick, the full stall, the full airplane. Ease off and it quietly takes the strain again, holding whatever attitude you left it in. It even rides out a gusty storm round without porpoising. And if you'd rather fly every newton yourself, one tap of T switches it off; the little TRIM strip on your gauges shows you what it's doing either way.

Same honest model underneath. It just stopped making you arm-wrestle it to fly straight.