| 毛晓东，王伟华，李 洋，张明治，张 策.基于定压减压阀的直升机燃油系统供油压力调控[J].航空发动机,2025,51(6):145-152 |
| 基于定压减压阀的直升机燃油系统供油压力调控 |
| Fuel Supply Pressure Regulation of Helicopter Fuel System Based on Fixed-Pressure Reducing Valve |
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| DOI： |
| 中文关键词: 燃油系统 过载 定压减压阀 供油压力 直升机 |
| 英文关键词:fuel system overload fixed-pressure reducing valve fuel supply pressure helicopter |
| 基金项目:辽宁省“兴辽英才计划”基金项目（XLYC1802092）资助 |
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| 摘要点击次数: 1986 |
| 全文下载次数: 415 |
| 中文摘要: |
| 针对直升机燃油系统供油压力在飞行过载及供油管路高度差的影响下对直升机产生较大波动的问题，基于直升机燃油
系统组成和工作原理，制定了一种基于定压减压阀的燃油系统供油压力调控方案。充分考虑过载和供油管路内燃油惯性的因素，
建立了燃油系统各部件以及定压减压阀数学模型。在数学模型的基础上，搭建了完整燃油系统和定压减压阀的仿真模型。通过
对比燃油重心仿真与试验的变化曲线，验证了仿真模型的准确性。利用仿真模型分别计算并分析了加装定压减压阀前后各向过
载变化对供油压力的影响。结果表明：安装减压阀前，各向过载变化均会使供油压力产生波动，且在纵向或法向过载较大时，供油
压力会超出设计范围；采用定压减压阀方案后，发动机供油压力在各向过载作用下的压力波动被控制在±0.5 kPa左右，控制效果
更好。 |
| 英文摘要: |
| To address the significant fluctuations in fuel supply pressure of the helicopter fuel system under the influence of flight
overload and fuel line height differences, a fuel system supply pressure regulation scheme based on a fixed-pressure reducing valve was
proposed, considering system composition and working principle. Fully considering the factors of overload and fuel inertia within supply
lines, mathematical models of the fuel system components and the fixed-pressure reducing valve were established. Based on the mathemati?
cal model, the simulation model of the complete fuel system and the fixed-pressure reducing valve was constructed. The accuracy of the
simulation model was verified by comparing the variation curves of the fuel center of gravity between simulations and tests. Using the
simulation model, the influences of directional overload variations on fuel supply pressure before and after installing the fixed-pressure
reducing valve were calculated and analyzed. The simulation results show that without the pressure-reducing valve, directional overload
variations cause supply pressure fluctuations, and the fuel supply pressure will exceed the design range with large longitudinal or normal
overloads. After implementing the fixed-pressure reducing valve scheme, pressure fluctuations under directional overloads were controlled
within approximately ±0.5kPa, demonstrating improved regulation effectiveness. |
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