Trutrak Autopilots

TruTrak autopilot can be defined as being an orthogonal rate system. This means that gyroscopic rate sensors are installed so as to sense motion about each of the major axes (roll, yaw, and pitch). These sensors generate the fast signal responses necessary to create an autopilot with the best possible dynamic performance. The complete TruTrak flight control system combines within a single panel-mounted programmer/computer package all the electronic and sensing elements needed for the roll and pitch functions as well as a rate-gyro-controlled yaw damper. Basic directional control is provided by digital selection of a GPS track to be flown. This replaces heading selection on the DG, and eliminates drift as well as crosswind correction. It is likely that the DG heading bug will become obsolete. In the GPS NAV mode of operation the system responds to digital guidance information so as to fly a complex navigation program. This function has also been referred to as GPS steering. The vertical portion of the system contains a digital altimeter and associated altitude selector capable of selection in increments as small as 10 ft. Altitude transitions can be made either by airspeed or vertical speed selection. If an upward vertical speed is selected which is beyond the capability of the aircraft, there will be no stall. Instead, the autopilot will cause the aircraft to climb at a pre-set minimum safe airspeed. This is the only known system to provide this safety feature. The programmer has an illuminated digital display that shows modes anumerical data. Controls consist of a LATERAL mode selector, a VERTICAL mode selector, an ENTER button, a rotary NUMERIC selector, and selectors for VS UP & VS DOWN. Operation is self-explanatory when these controls are used in conjunction with the display. Model Aileron Control Pitch Control Yaw Damper Nav Modes GPS Steering Altitude Hold Vertical Speed Altitude Select DigiFlight-100 * -- -- -- Optional -- -- -- DigiFlight-200 * * -- -- Optional * -- -- DigiFlight-200VS * * -- -- Optional * * -- DFC200 * * -- * * * * -- DFC250 * * -- * * * * * DFC300 * * * * * * * *