Interface force sensors, including load cells and multi-axis sensors, provide precise data on loads, stresses, and strains experienced by UAV components. To validate unmanned aerial vehicles during flight, these sensors provide information that helps engineers optimize designs, validate structural integrity, and ensure airworthiness. Engineers can identify potential weaknesses in UAVs by measuring forces during tests like wing fatigue, maneuverability, motor torque, fine-tuning control systems, and maximizing flight performance.