弹道学报2026，Vol.38Issue(1)：40-50,11.DOI:10.12115/ddxb.2024.07005
弹用固体燃料柱状装药冲压发动机性能分析
Performance Analysis of Solid Fuel Cylindrical Charge Ramjets for Projectiles
岳领 1史金光 1任华杰 2耿宝魁3
作者信息
- 1. 南京理工大学 能源与动力工程学院,江苏 南京 210094
- 2. 海装沈阳局驻沈阳地区第三军事代表室,辽宁 沈阳 110066
- 3. 西北工业集团有限公司,陕西 西安 710043
- 折叠
摘要
Abstract
To improve the performance of solid fuel ramjet for ultra-long-range guided projectiles,a novel ramjet design employing a cylindrical charge structure was proposed.In contrast to traditional annular charge configurations,the internal ballistic computational models were established for the two contrasting structural schemes based on transitional shear stress transport and vortex concept dissipation equations,and their flow field structures and performance parameters were obtained.The result shows that the innovative cylindrical charge configuration can increase the charge mass and combustion efficiency of the fuel,but it will correspondingly increase the overall engine length and total pressure loss.Compared to engines with conventional annular charge,the proposed design with cylindrical charge significantly enhances the turbulent kinetic energy downstream of the post-combustion chamber baffles under the equivalent inlet mass flow rate,facilitating superior mixing of fuel with air and creating a more extensive high-temperature zone near nozzle.At air mass flow rate of 4 kg/s,the cylindrical charge configuration can improve combustion efficiency by approximately 10.59%,thrust by 7.74%,and specific impulse by 13.13%compared to the benchmark engine.However the magnitude of these improvements inversely decreases with the increase of air-fuel ratio.Additionally,within similar combustion efficiencies,adopting cylindrical charge configuration significantly shortens the afterburner chamber,optimizing the available space for other components and potentially enhancing the integration of long-range munition systems.The study presents the cylindrical charge as a feasible alternative structural approach for the design of advanced solid fuel ramjet engines.关键词
固体燃料冲压发动机/内型面/隔板扰流/推力/燃烧效率Key words
solid-fuel ramjet/inner profile/bulkhead turbulence/thrust/combustion efficiency分类
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岳领,史金光,任华杰,耿宝魁..弹用固体燃料柱状装药冲压发动机性能分析[J].弹道学报,2026,38(1):40-50,11.
