| 某无人机基于载重任务的重心位置配置分析 |
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| 引用本文： | 李永泽.某无人机基于载重任务的重心位置配置分析[J].科学技术与工程,2011,11(15):3472-3475. |
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| 作者姓名： | 李永泽 |
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| 作者单位： | 西北工业大学航空学院,西安,710072 |
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| 摘 要： | 基于某无人机的载重任务特点和要求,提出和分析了一种通过利用载重物调节无人机任务阶段重心位置,改善爬升和下滑阶段升阻特性来提高性能的方法。推导了重心位置变化与配平升力线斜率、升致阻力系数之间的关系。分析了通过调节重心位置改善爬升和下滑阶段升阻特性,从而提高性能的可行性;并结合实际模型进行了爬升与下滑阶段升阻特性计算。通过与任务阶段重心位置始终保持不变设计方案的对比,得出了通过调节重心位置可有效改善飞机爬升和下滑阶段升阻特性,提高性能的结论。
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| 关 键 词： | 无人机 重心 配平升力 配平阻力 爬升率 下滑率 |
| 收稿时间： | 3/1/2011 10:05:44 PM |
| 修稿时间： | 3/3/2011 10:24:33 AM |
Analyze the C.G of a UAV Based on Load Task |
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| liyongze.Analyze the C.G of a UAV Based on Load Task[J].Science Technology and Engineering,2011,11(15):3472-3475. |
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| Authors: | liyongze |
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| Institution: | LI Yong-ze,YUAN Chang-sheng,ZHANG Li(School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,P.R.China) |
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| Abstract: | Based on the task features of a UAV's load mission requirements,it proposes and analyzes a way to improve the performance of UAV by using the physical load to adjust the c.g of the model aircraft during the mission phase.The climb and decline stages of lift-drag features is improved,and derived the relationship between trim lift induced drag and lift slope caused by the change of center of gravity.The feasibility of improving the lift-drag characteristics during climb and fell stage by adjusting the positio... |
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| Keywords: | UAV center of gravity trim lift trim drag rate of climb rate of down |
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