Modes of Operation
Operating Modes
ACE includes several flight modes that perform specific functions when used. In a standard implementation, ACE has full control of the aircraft while being operated in one of the ACE flight modes. However, some customers prefer to receive precision guidance only, which can then be used by their own proprietary flight control algorithms.
This section includes brief descriptions of the flight modes. For additional description how the system behaves in various modes, refer to the Performance Specification.
Full Control
In the full control configuration, ACE will send control commands to the autopilot when the UAS is being operated in one of the following ACE flight modes. The default GPS-based and manual flight modes that come standard with the autopilot (i.e. Loiter, Stabilized, etc.) are still available and are independent of the ACE system.
Flight Modes
ACE Takeoff
Precision takeoff from moving platforms with rapid ascent to clear obstructions. Continues to following the takeoff position and ascend to operational altitude. Does not require GPS.
ACE Land
Precision, vision-based landing on moving platforms without GPS. Intelligent descent based on motion and flight conditions, as well as landing maneuver to maximize reliability.
ACE RTB
Return to base (RTB) optimizes a flight path to a moving host platform for a safe, smooth approach before transitioning to land. RTB requires GPS or other localization system.
ACE Wingman
Aircraft remains at a fixed position (bearing & range) relative to a moving host vehicle. Wingman requires GPS.
ACE Track
Precision station-keeping of a UAV over a moving vehicle or vessel for mobile tethered and pseudo-tethered operations with or without GPS.
Guidance Only
When configured for Guidance Only, ACE provides very accurate, high-rate, filtered relative position measurements to the autopilot or other subsystem. Guidance Only configuration behaves as an open loop precision sensing module and does not issue any real-time control commands. Guidance Only may be useful for UAV operations from fixed locations, proprietary autopilots, or other unmanned vehicle types.
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