组合式仿枫树子飞行器与空中分体技术

doi:10.7527/S1000-6893.2023.29590

Abstract

Abstract:

Samara aircraft is a biology-inspired aircraft based on the samara. To improve the capability of the task execution of the samara aircraft， a combinable samara aircraft is designed. The combinatorial aircraft can be composed of two， three or six individual single samara aircraft through a combination box， and has the abilities of rapid assembly on the ground and controlled separation in the air. Based on the blade-element momentum theory， the aerodynamic model of single aircraft and combinatorial aircraft is established. It is found that the flight efficiency of combinatorial aircraft is 13. 3% higher than that of single aircraft. Then， the flight dynamics model and the outer loop control law for the aircraft are completed. Through six degrees of freedom flight simulation， the typical flight state of the aircraft and the process of controlled separation in the air are studied， which shows that the aircraft has the abilities of controlled flight and stable separation in the air. Finally， in the actual test flight， the controlled separation of the 3-combined aircraft is successfully realized. The design of the combinatorial aircraft and the technique of controlled separation make the aircraft obtain the dual advantages of high flight efficiency and UAV cluster.

Key words: separable aircraft, aerodynamic configuration, flight simulation, aerodynamic modeling, test flight

CLC Number:

V278

Shengxiang TONG, Zhiwei SHI, Xi GENG, Lishuang WANG, Zhikun SUN, Qichang CHEN. Combinable samara aircraft and controlled separation technique[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(6): 629590-629590.

Figures/Tables 15

Fig.1

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Fig.9

Table 1

Main parameters of single aircraft

主要参数		数值
展长/m		0.4
弦长/m		0.12
质量/kg		0.3
转动惯量	I_x /（kg·m²）	0.002 23
	I_y /（kg·m²）	0.009 93
	I_z /（kg·m²）	0.010 10
惯性积	I_xy /（kg·m²）	0
	I_yz /（kg·m²）	0.000 07
	I_xz /（kg·m²）	0
螺旋桨转动惯量 $I p r o p, x b$ /（kg·m²）		$0.000 004 17$
螺旋桨最大静拉力/N		1

Table 1

Fig.10

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References 31

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Combinable samara aircraft and controlled separation technique

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