"Airspeed High"

[N941WR]

When flying with the SkyView AP engaged and pointing the nose downhill (-500 FPM), my airspeed can approach the "Yellow arch", which is well below the TAS Vne.

When this happens, I get the ""Airspeed High" alert and the AP pitches up very abruptly, much more than manual would indicate.

Is it possible to tone down the force of the pitch up?

 

[led]

Hi Bill,

There is no separate setting that will affect how aggressively the AP corrects airspeed errors.   The goal of the speed limiter is to keep the airplane in a safe range.  Overspeeds are corrected at up to but no more than the G-limiter, which kicks in at 1.5G positive.

The AP max speed speed is set relative to VNE; you may be able to increase that a little if your normal descents are bumping the limiter.  Another option is to make your descent in ASPD HOLD and adjust descent rate with throttle.

Hope that helps,

-Lawrence

Lawrence Doan
Autopilot Engineer

 

[N941WR]

Lawrence,

Thank you for the quick reply.

I think my issue is that the onset of the pull-up is pretty abrupt, while the overall G loading is probably the 1.5G you mentioned. Is there anyway you can slow down the G onset, which is rather abrupt. Abrupt enough it feels like something is going snap.

In fact, if I had a pilot jerk the stick like the pitch servo, they would never touch the stick again.

Go up in the Sportsman, set the Vne lower than current and start a decent. You will very quickly understand what I'm talking about. Maybe. Different airspeeds, airframes, etc. could give different results.

Thanks again!
Bill