Unmanned aerial vehicle (UAV) commercialization has increased the possibility of performing monitoring, data collection, survey mapping and aerial seeding in the modern world. The main components used in unmanned aircraft systems are ground control station (GCS) which includes mission planner software and two-way communication system (Telemetry) between the GCS and the UAV, transmitter, and receiver, autopilot on board, payload, remote video terminal, etc. This paper deals with the entire design of flying wing UAV taking into account wing and fuselage design and later implementing payload attachment for aerial seeding and mapping. Initially, UAV has been designed using dimensions and wing loading parameters calculated from basic aerodynamics. The complete UAV was designed in CATIA, and flow and structural analysis was performed in ANSYS. UAV was fabricated using balsa wood to test the prototype. Modified UAV design is further fabricated using composite for aerial seeding.