The unique SASPlus (SFT-100) system combines a Stability Augmentation   System with a Force Trim System.

The SAS provides roll and pitch stabilization that improves the handling qualities of the helicopter, while being transparent to the pilot.  It increases basic aircraft stability by opposing low-amplitude upsets from any cause.  With the SFT-100 installed, the SAS function will reduce the amplitude of any turbulence upset and eliminate many of the smaller motions or disturbances. Most of the small upsets to the aircraft are not detected by the pilot, thus requiring no effort to react to them.

The Force Trim function gives the pilot an “extra hand” that holds the cyclic in place using a Force Gradient system that provides a “force feel” as the control is moved away from its center “engage” position.

The unique SAS+FT combination gives the pilot hands-free operation for short periods to perform other “housekeeping” activities, often without significant heading or altitude drift.

The SAS and Force Trim functions are engaged and disengaged by using a pair of switches in the panel-mounted controller. The FT function can also be interrupted by use of a convenient “Trim Release” switch mounted on the cyclic grip for short-term maneuvering or re-centering.

The SAS is FAA-approved for full-time operation throughout the flight envelope ….. from take-off to landing.

System weight is less than 13 pounds, installed.

SFT-100 (SASPlus) System Diagram

View System Diagram PDF File

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