B737NG - Speed Trim System
Hi can any one explain the STS on the B737NG. I have very low time on the B737, and have never really understood the function of the STS.
As per FCOM
The speed trim system (STS) is a speed stability augmentation system designed to improve flight characteristics during operations with a low gross weight, aft centre of gravity and high thrust when the autopilot is not engaged.
The purpose of the STS is to return the airplane to a trimmed speed by commanding the stabilizer in a direction opposite the speed change
- What is Speed Stability ?
- What is Trimmed Speed?
- What does direction opposite the speed change mean?
Thanks