ABSTRACT
This chapter details the design and implementation of an inexpensive fixed-wing Unmanned Aerial Vehicle (UAV) launch and recovery system, using a low-cost multi-rotor UAV as a versatile airlift and retrieval platform. A fixed-wing UAV is successfully airlifted to a pre-determined deployment altitude and launched, eliminating the need for a runway or costly rail launch system. The fixed-wing UAV is subsequently recovered by the multi-rotor in mid-air, using a net-based recovery approach. The finalised launch and recovery mechanisms are extremely inexpensive (~£40), easy to manufacture using widespread 3D printing methods, and are readily adaptable to a number of multi-rotor platforms, allowing researchers to make use of their existing systems. Crucially, the developed system completely alleviates the need for a flat, open area to operate a fixed-wing UAV. Instead, the UAV is launched and recovered at altitude, clear of any obstacles on the ground. The system therefore has particular relevance to UAV operations in complex environments, such as areas of rugged terrain or dense vegetation, where the lack of a suitable take-off and landing space has traditionally prevented the use of fixed-wing UAVs. Finally, since the fixed-wing UAV is launched and recovered using the multi-rotor airlifter, its design can be optimised specifically for cruise flight, rather than take-off and landing, improving its range and endurance performance.
