Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography
Unexpected pressure rise may occur in the end-burning grain solid rocket motor. It is generally believed that this phenomenon is caused by the nonparallel layer combustion of the burning surface, resulting in the increase of burning rate along the inhibitor. In order to explain the cause of this phe...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/7906804 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832546971119779840 |
|---|---|
| author | Wei Xianggeng Bo Tao Wang Pengbo Ma Xinjian Lou Yongchun Chen Jian |
| author_facet | Wei Xianggeng Bo Tao Wang Pengbo Ma Xinjian Lou Yongchun Chen Jian |
| author_sort | Wei Xianggeng |
| collection | DOAJ |
| description | Unexpected pressure rise may occur in the end-burning grain solid rocket motor. It is generally believed that this phenomenon is caused by the nonparallel layer combustion of the burning surface, resulting in the increase of burning rate along the inhibitor. In order to explain the cause of this phenomenon, the experimental investigation on four different end configurations were carried out. Based on the X-ray real-time radiography (RTR) technique, a new method for determining the dynamic burning rate of propellant and obtaining the real-time end-burning profile was developed. From the real-time images of the burning surface, it is found that there was a phenomenon of nonuniform burning surface displacement in the end-burning grain solid rocket motor. Through image processing, the real-time burning rate of grain center line and the real-time cone angle are obtained. Based on the analysis of the real-time burning rate at different positions of the end surface, the end face cone burning process in the motor working process is obtained. The closer to the shell, the higher the burning rate of the propellant. Considering the actual structure of this end-burning grain motor, it is speculated that the main cause of the cone burning of the grain may be due to the heat conduction of the metal wall. By adjusting the initial shape of the grain end surface, the operating pressure of the combustion chamber can be basically unchanged, so as to meet the mission requirements. The results show that the method can measure the burning rate of solid propellant in real time and provide support for the study of nonuniform combustion of solid propellant. |
| format | Article |
| id | doaj-art-c102e8f88d584f74a33b6310bf77d14f |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-c102e8f88d584f74a33b6310bf77d14f2025-02-03T06:46:38ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742020-01-01202010.1155/2020/79068047906804Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time RadiographyWei Xianggeng0Bo Tao1Wang Pengbo2Ma Xinjian3Lou Yongchun4Chen Jian5Science and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, ChinaScience and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, ChinaShanghai Space Propulsion Technology Research Institution, Shanghai 201109, ChinaShanghai Space Propulsion Technology Research Institution, Shanghai 201109, ChinaShanghai Space Propulsion Technology Research Institution, Shanghai 201109, ChinaScience and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, ChinaUnexpected pressure rise may occur in the end-burning grain solid rocket motor. It is generally believed that this phenomenon is caused by the nonparallel layer combustion of the burning surface, resulting in the increase of burning rate along the inhibitor. In order to explain the cause of this phenomenon, the experimental investigation on four different end configurations were carried out. Based on the X-ray real-time radiography (RTR) technique, a new method for determining the dynamic burning rate of propellant and obtaining the real-time end-burning profile was developed. From the real-time images of the burning surface, it is found that there was a phenomenon of nonuniform burning surface displacement in the end-burning grain solid rocket motor. Through image processing, the real-time burning rate of grain center line and the real-time cone angle are obtained. Based on the analysis of the real-time burning rate at different positions of the end surface, the end face cone burning process in the motor working process is obtained. The closer to the shell, the higher the burning rate of the propellant. Considering the actual structure of this end-burning grain motor, it is speculated that the main cause of the cone burning of the grain may be due to the heat conduction of the metal wall. By adjusting the initial shape of the grain end surface, the operating pressure of the combustion chamber can be basically unchanged, so as to meet the mission requirements. The results show that the method can measure the burning rate of solid propellant in real time and provide support for the study of nonuniform combustion of solid propellant.http://dx.doi.org/10.1155/2020/7906804 |
| spellingShingle | Wei Xianggeng Bo Tao Wang Pengbo Ma Xinjian Lou Yongchun Chen Jian Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography International Journal of Aerospace Engineering |
| title | Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography |
| title_full | Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography |
| title_fullStr | Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography |
| title_full_unstemmed | Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography |
| title_short | Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography |
| title_sort | burning rate enhancement analysis of end burning solid propellant grains based on x ray real time radiography |
| url | http://dx.doi.org/10.1155/2020/7906804 |
| work_keys_str_mv | AT weixianggeng burningrateenhancementanalysisofendburningsolidpropellantgrainsbasedonxrayrealtimeradiography AT botao burningrateenhancementanalysisofendburningsolidpropellantgrainsbasedonxrayrealtimeradiography AT wangpengbo burningrateenhancementanalysisofendburningsolidpropellantgrainsbasedonxrayrealtimeradiography AT maxinjian burningrateenhancementanalysisofendburningsolidpropellantgrainsbasedonxrayrealtimeradiography AT louyongchun burningrateenhancementanalysisofendburningsolidpropellantgrainsbasedonxrayrealtimeradiography AT chenjian burningrateenhancementanalysisofendburningsolidpropellantgrainsbasedonxrayrealtimeradiography |