Modeling and Simulation of Flight Profile and Power Spectrum for Near-Space Solar-Powered UAV

Currently, several solar-powered unmanned aerial vehicles (UAVs) have achieved 24 h uninterrupted cruise. However, models that can cruise for weeks or even months without interruption are in the minority. The technological progress requires improvement of subsystems and also depends on accurate planning flight profile power spectrum a long working cycle. Combined with test data obtained during development UAV, this paper establishes systematic mathematical physical aerodynamic, energy, propulsion systems, which reflect change performance parameters conditions attenuation time. Further, track control strategy based principle maximum energy utilization is proposed, balance model each stage established. On basis strategy, typical UAV analyzed. Finally, input decomposed into task (takeoff time window, season, latitude, takeoff weight) (lift–drag ratio, secondary battery density), their effects mission feasibility studied respectively. research methods conclusions reference significance UAVs.