Analysis and experimental study on different airfoils in heavy unmanned aerial vehicle
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ORIGINAL PAPER
Analysis and experimental study on different airfoils in heavy unmanned aerial vehicle Zheng Li1
· Dixin Wang1
Received: 23 July 2020 / Revised: 27 October 2020 / Accepted: 31 October 2020 © Shanghai Jiao Tong University 2020
Abstract The performance of airfoil plays an important role in the performance of model aircraft. Three types of airfoils are selected in this paper: the GOE 480, MH 114, and MH 115, which are all flat-convex airfoils. Firstly, three types of airfoil were numerically analyzed by using Profili software. The results show that among the three types of flat-convex airfoils, the liftdrag ratio of MH series airfoils is higher than that of GOE 480. Then, the FEA software was used to analyze the aerodynamic performance of the wings. And the lift and drag coefficient obtained from calculation was compared with the results by Profili software. To compare the actual flight performance of the three airfoils, the control variable method and UAV self speed measurement method based on sequence images were used for the real field test. The results show that the type of MH 115 has the largest max level speed among the three types of wings. Keywords Heavy-duty aircraft · Flaps · Parameter design · Test verification · Airfoil
1 Introduction Heavy lift aircraft are actually unmanned transport aircraft today, as an important means of transport, transport aircraft have been around since the beginning of the twentieth century, and the main purpose was to carry people. During the war years, transport aircraft played an important role in helping the army transport the baggage [1]. And now, such a developed online shopping has driven the rapid development of the logistics industry. As drone technology matures, drones are also starting to make waves in the logistics industry. The mode of transportation will greatly reduce the cost of transportation compared to the traditional mode of transportation, in some remote areas, especially in areas with a poor environment, if unmanned transport aircraft are used, the transportation efficiency will be greatly improved. The performance of an aircraft often depends on the performance of its wings, a good wing shou333ld produce a lot of lift and little drag [2]. The efficiency of the airfoil is greatly influenced by airfoil shape, it is affected by the curvature and thickness of the airfoil to some extent. To increase
B 1
Zheng Li [email protected] School of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang, China
the lift coefficient, the wing angle of attack can be increased or the wing area S can be increased. Airflow through the wings is affected by both curvature and thickness, so they should be considered simultaneously. Many new methods have been used to study new airfoils at home and abroad. In the world, Limache A C presents an exact inverse method that generates the airfoil shape, satisfying all fluid dynamic and geometric constraints imposed by prescribing any input velocity distribution (or contour at the hodograph), wi
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