4
FLIGHT MODE EXPLANATIONS
ALT HOLD mode is the base flight mode of this PRA, and provides the most manual control over the
aircraft. In this flight mode, the aircraft uses the onboard sensors to only stabilize its attitude and altitude.
Pitch and roll are commanded by manipulating the respective control sticks.At neutral control input (center
pitch and roll stick position) the RPA will remain level and not increase or decrease altitude.
Altitude rate of change is controlled by the amount of deviation from center point of the throttle stick. The
higher the throttle stick position, the faster the climb. Conversely, the lower the throttle stick position, the
faster
the
RPA
will
descend.
This flight mode uses GPS inputs to maintain position during flight. Pilot inputs via the pitch/roll sticks
command changes in ground speed. Pitch and roll stick deflection will command fore/aft and left/right
ground speeds respectively. Controlling altitude in POSHOLD mode is the same as in ALTHOLD. With pitch
and roll controls centered, the RPA will attempt to hold its current position and altitude. The aircraft will
self-correct for disturbances that may force it from the desired position.
Auto mode instructs the RPA to follow the waypoint mission plan uploaded to the autopilot system.
The pilot will only have manual control of the RPA heading while the mission is being carried out. The
autonomous mission can be paused at any time by toggling the flight mode switch on the
RPS. To exit AUTO mode, the user can simply flip the switch into either ALTHOLD or
POSHOLD.
POSITION HOLD
AUTO MODE
ALTITUDE HOLD
