A trajectory optimization method for reducing magnetic disturbance of an internal combustion engine powered unmanned aerial vehicle

UAV Avionics Safety, Certification, Accidents, Redundancy, Integrity and Reliability: A Comprehensive Review and Future Trends

“…These engines comprise several parts, such as a combustion chamber, pistons, fuel injectors, intake, and exhaust valves. Despite the differences between petrol and diesel engines -such as spark plugs in petrol engines and self-ignition in diesel engines under high pressure, both types of engines are generally less efficient and more harmful to the environment due to emissions [18], [21], [22]. Combustion fuels have a significantly higher energy density compared to Li-Ion battery with diesel fuel having an energy density of 12,666.7 Wh/kg and petrol 12,888.9 Wh/kg while Li-Ion batteries only displaying an energy density of 250 -340 Wh/kg [18].…”

Design & Implementation of an Electric Fixed-wing Hybrid VTOL UAV for Asset Monitoring

“…Electric-powered fixed-wing UAV systems (Gur and Rosen 2009;Roskam 1985b) are becoming increasingly popular, with specific models being mass-produced. Small and medium-sized electric UAVs are gaining market popularity (Lyu et al 2017), albeit having a much shorter range and endurance in comparison with the internal combustion engines (ICEs) propelled models (Ge et al 2021;Oh et al 2021). Existing technologies in Lithium-Ion (Li-Ion) and Lithium-Polymer (Li-Po) batteries allow energy densities up to 300-500 watt-hours/kg (Wh/kg) (Girishkumar et al 2010).…”

UAV trajectory optimization using chance-constrained second-order cone programming

“…In real world, the existence of random constraints is often considered, which poses a challenge to optimization methods and control [7,8]. For some uncertain situations, researchers now focus on mainly two categories to address those problems with uncertainties.…”