Design of High Wing Loading Compact Electric Airplane Utilizing Co-Flow Jet Flow Control
Design of High Wing Loading Compact Electric Airplane Utilizing Co-Flow Jet Flow Control
复制标题
采用共流射流控制的高翼载紧凑型电动飞机设计
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Gecheng Zha
中科院分区：
文献类型：
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作者：
A. Lefebvre;Gecheng Zha
本文介绍了一种采用同向射流（CFJ）流动控制的电动飞机概念设计。其目的是设计一种翼载高、尺寸紧凑的飞机，使飞机可以携带更多的电池，达到更远的航程。CFJ电动飞机（CFJ-EA）的使命是在0.15的巡航马赫数下运载4名乘客，航程约为300海里。CFJ-EA以1.3的极高CL巡航，产生182.3kg/m2的翼载，约为常规通用航空飞机的3倍。包括CFJ泵的功率消耗（L/D）c在内的空气动力学效率非常出色，在0.04的低动量系数Cµ下，其值为24。起飞和着陆距离也是合理的，因为最大CL非常高，为4.8，达到了0.28的高Cµ。机翼被设计成绕其1/4弦轴枢转，这样它就可以在不旋转机身的情况下实现大迎角（AoA）。引入了一个定义为PMS=乘客数 * 英里数/S的价值度量，其中S是机翼平面形状面积。本EA设计的PMS接近于常规往复式发动机通用航空飞机的PMS，并且比现有技术EA的PMS大2.3至3.8倍。设计结果表明，CFJ-EA比采用常规机翼设计的相同尺寸EA具有更大的航程。或者对于相同的范围，CFJ-EA的尺寸比传统设计小得多。该设计是首次尝试，没有系统的设计优化。CFJ-EA概念可能会打开一扇大门，一类新的通用航空EA设计。同样的CFJ流动控制技术也可以用于其他具有常规推进系统的通用航空飞机和高空飞机以减小尺寸。
This paper presents a conceptual electric airplane design utilizing Co-Flow Jet (CFJ) flow control. The purpose is to design an aircraft with high wing loading and a compact size so that an airplane can carry more battery and reach a longer range. The CFJ Electric Aircraft (CFJ-EA) mission is to carry 4 passengers at a cruise Mach number of 0.15 with a range of about 300nm. The CFJ-EA cruises at a very high CL of 1.3, which produces a wing loading of 182.3kg/m 2 , about 3 times higher than that of a conventional general aviation airplane. The aerodynamic efficiency including the power consumption of the CFJ pump (L/D)c is excellent with a value of 24 at a low momentum coefficient Cµ of 0.04. Takeoff and landing distances are also reasonable due to a very high maximum CL of 4.8, achieved with a high Cµ of 0.28. The wing is designed to pivot around its 1/4 chord axis so that it can achieve high angle of attack (AoA) without rotating the fuselage. A measure of merit defined as PMS=Passengers*Miles/S is introduced, where S is the wing planform area. The PMS of the present EA design is close to that of a conventional reciprocating engine general aviation airplane, and is 2.3 to 3.8 times greater than the PMS of the state of the art EA. The design results suggest that the CFJ-EA has a far greater range than a same size EA using a conventional wing design. Or for the same range, the CFJ-EA has a much smaller size than a conventional design. This design is the first trail with no systematic design optimization. The CFJ-EA concept may open the door to a new class of general aviation EA designs. The same CFJ flow control technology can also be used for other general aviation airplanes with conventional propulsion systems and for high altitude airplanes to reduce size.