考虑不确定性的太阳能无人机总体参数设计

doi:10.7527/S1000-6893.2023.29856

Abstract

Abstract:

Compared with the design of conventional aircraft， that of ultra-high-altitude solar UAV platforms needs to meet special requirements such as weak energy balance， high lift-drag ratio， ultra-low wing load， and ultra-lightweight structure. Therefore， the overall parameter value is closely related to the structure， energy， power and other sub-system parameters and performance parameters， and the change of each sub-system parameter and the performance parameter will directly affect the design result of the overall parameter. Based on the energy balance constraint and weight balance constraint， the overall parameter model of ultra-high altitude solar UAVs is established in this paper. Next， with the aspect ratio and photovoltaic panel rate as optimization design variables and the aircraft take-off weight and wing area as optimization objectives， an overall parameter design method considering the influence of uncertainty is proposed based on the deterministic overall parameter optimization model by introducing the uncertainty of key parameters， overcoming the limitations of the deterministic overall parameter design method. In addition to improving the performance of the overall parameter， the feasible probability of the overall parameter under parameter perturbation is ensured.

Key words: ultra-high altitude solar UAV, overall parameter design method, uncertainty, energy balance, feasible probability

CLC Number:

V221

Yuan YAO, Yuke DAI, Yiming XU. Overall parameter design of solar UAV considering uncertainty[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(17): 529856.

Figures/Tables 19

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参数	数值
巡航高度H/m	20 000
重力储能高度ΔH/m	8 000
设计升力系数C_L	1.05
有效载荷重量m_pay/kg	40

参数	确定性总体参数最优设计方案	考虑不确定性的总体参数最优设计方案
起飞重量m/kg	421.0	521.5
机翼面积S/m²	84.3	110.0
巡航速度V_∞/（m·s^-1）	32.5	31.7
展弦比λ_w	28.4	28.5
布板率k_sc/%	82.5	81.6
方案可行概率/%	25	90

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Overall parameter design of solar UAV considering uncertainty

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