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论文:2013,Vol:31,Issue(3):406-412 |
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引用本文： |
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昌敏, 周洲, 郑志成. 升力风扇垂直起降飞机过渡态总体参数分析[J]. 西北工业大学 |
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Chang Min, Zhou Zhou, Zheng Zhicheng. Analysis of Conceptual Parameters of Lift-Fan VTOL Aircraft in Transition[J]. Northwestern polytechnical university |
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| 升力风扇垂直起降飞机过渡态总体参数分析 |
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| 昌敏, 周洲, 郑志成 |
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| 西北工业大学 无人机特种技术重点实验室, 陕西 西安 710065 |
| 摘要: |
| 升力风扇垂直起降飞机属于一种特殊的固定翼飞行器,兼有直升机式的悬停状态、固定翼状态,以及特殊的过渡状态。在这三种状态下,两套升力部件(直接升力部件和气动升力部件)只共用一套动力源,使得动力源工作状态差异很大,导致各总体参数之间的匹配关系与常规固定翼飞机甚为不同。为此,基于螺旋桨动量理论推导了升力风扇垂直起降飞机全机升阻、功率特性的估算模型;并针对整个过渡过程,分析了各总体参数对过渡态功率、阻力特性的影响,进而得到各总体参数的合理匹配方法以满足减小"富余功率"和节省过渡阶段的燃油消耗量的设计要求,提高巡航经济性。所研究的成果能为升力风扇垂直起降飞机概念设计提供有效地指导原则。 |
| 关键词:
垂直起降飞机
升力风扇
过渡状态
悬停状态
固定翼状态
动量理论
阻力凸峰
富余功率
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| Analysis of Conceptual Parameters of Lift-Fan VTOL Aircraft in Transition |
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| Chang Min, Zhou Zhou, Zheng Zhicheng |
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| Science and Technology on UAV Laboratory,Northwestern Polytechnical University,Xi'an 710072,China |
| Abstract: |
| Lift-fan VTOL aircraft is a special type of fixed wing aircraft, whose three modes are: helicopter-like hover, fixed-wing, and special transition.Among these three modes, aerodynamic lift system and direct lift system share only one engine system.The working conditions of the two lift systems differ apparently.Consequently, the relationships among conceptual parameters of lift-fan VTOL aircraft are different from those of conventional aircraft. On the basis of classical momentum theory, we established a preliminary model for analyzing characteristics of lift, drag and power.Then we assessed the impacts of the conceptual parameters exerted on characteristics of total drag and power consumed.We gave feasible methods for so selecting and weighing the conceptual parameters as to meet the requirements of reducing "surplus power"and saving more fuel during transition for cruising efficiency.The three conclusions in section 4 of the full paper, in our opinion, can provide effective guidance for the preliminary design of lift-fan VTOL aircraft. |
| Key words:
design
drag
efficiency
fixed wings
flowcharting
lift
mathematical models
schematic diagrams
VTOL/STOL aircraft
drag peak
fixed wing mode
hover
lift-fan
momentum theory
surplus power
transition
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| 收稿日期: 2012-04-18
修回日期:
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| DOI: |
| 基金项目: 西北工业大学基研研究基金(JCT20130110)资助 |
| 通讯作者:
Email： |
| 作者简介: 昌敏(1986-),西北工业大学博士研究生,主要从事无人机总体与气动布局设计研究。
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| 相关功能 |
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| 作者相关文章 |
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| 昌敏 在本刊中的所有文章 |
| 周洲 在本刊中的所有文章 |
| 郑志成 在本刊中的所有文章 |
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相关文献: |
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1．郑志成, 周洲, 昌敏, 王琛.升力风扇垂直起降飞机阻力特性分析[J]. 西北工业大学, 2012,30(1): 6-10 |
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