The MAVLab TU Delft team brings together in the delftAcopter all its knowledge to help poor Outback Joe once again. To make the challenge even harder we decided to go for a full electrically powered rescue UAV. As a research institute we are always pushing boundaries of what is currently possible. Our first preliminary energy calculations showed that a full-electric mission would be just possible, realizing we would need the state of the art battery technology, extremely efficient VTOL UAV and unique autonomous control implementations. this resulted in the delftAcopter. A marriage of a biplane wing and a helicopter propeller. The innovation lies in particular in the use of a tailless double-decker combined with one helicopter propeller which is used in both hover and in forward flight of in the most optimal regime.
Thanks to the autopilot the deftAcopter is capable of full autonomous flight, including: autonomous take-off, autonomous transition to forward flight and back, and autonomous landing. The 10DOF IMU, GPS and pitot-tube provide all necessary information for autonomous flight. The IMU is used for attitude estimation and barometric pressure gives AMSL altitudes. The GPS together with the IMU are used for position estimation for autonomous navigation and geo-fence crossing detection. The airspeed sensor provides airspeed data to the autopilot for optimal flight performance and to maintain the UAV within its flight envelope.
|Cruise speed||50 knots at 150 watt|
|Most efficient speed||35 knots at 120 watt|
|Maximum speed||58 knots|
|Wing area||0,496 m2|
|Power usage in hover||450 watt|
|Main battery energy||10000mAh ~ 225 Wh|
|FTS battery energy||250mAh ~ 2Wh|
|RPM in forward flight||450 rpm|
|RPM in hovering flight||1550 rpm|