Anomalous Behavior of a Solid Rocket Motor Nozzle Insert During Static Firing Test
This paper presents the study and development of a firing test used to evaluate the behavior of a solid rocket motor. The motivation for the development of a subscale solid rocket motor with end burning propellant grain geometry arose from the need to evaluate the nozzle inserts of graphite for the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Instituto de Aeronáutica e Espaço (IAE)
2016-10-01
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| Series: | Journal of Aerospace Technology and Management |
| Subjects: | |
| Online Access: | https://www.jatm.com.br/jatm/article/view/663 |
| _version_ | 1818193954686894080 |
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| author | Ronald Izidoro Reis Wilson Kiyoshi Shimote Luiz Cláudio Pardini |
| author_facet | Ronald Izidoro Reis Wilson Kiyoshi Shimote Luiz Cláudio Pardini |
| author_sort | Ronald Izidoro Reis |
| collection | DOAJ |
| description | This paper presents the study and development of a firing test used to evaluate the behavior of a solid rocket motor. The motivation for the development of a subscale solid rocket motor with end burning propellant grain geometry arose from the need to evaluate the nozzle inserts of graphite for the possible replacement with the carbon fiber-reinforced carbon composite. These subscale solid rocket motors, simulating full scale motor operating time, but with mass flow far below, aim to determine the ablative characteristics of composite materials as a function of operating time. The objective was to correlate the mass flow between subscale solid rocket motors and full scale using insert data materials such as graphite and carbon fiber-reinforced carbon composites, which have ablative characteristics determined in subscale solid rocket motors used at the Instituto de Aeronáutica e Espaço. The critical section to evaluate the test device is rocket nozzle throat region. Analysis of the materials of the subsonic and supersonic nozzle insert parts was performed after the burning tests. It was found the formation of a thin layer of material deposited after the test. The deposited coating layer was analyzed by electron dispersive x-ray analysis and scanning electron microscopy. The results analyzed by these methods showed that there were aluminum and carbon in the coating. Finally, the material was analyzed by x-ray diffraction, and the results showed the presence of aluminum oxide. It was also noticed that, because of the unexpected coating deposition forming material in exit conical and throat of the insert that the effect of ablation was not observed. |
| first_indexed | 2024-12-12T00:54:36Z |
| format | Article |
| id | doaj.art-c71e560bb91940ba97edc73d849e9693 |
| institution | Directory Open Access Journal |
| issn | 2175-9146 |
| language | English |
| last_indexed | 2024-12-12T00:54:36Z |
| publishDate | 2016-10-01 |
| publisher | Instituto de Aeronáutica e Espaço (IAE) |
| record_format | Article |
| series | Journal of Aerospace Technology and Management |
| spelling | doaj.art-c71e560bb91940ba97edc73d849e96932022-12-22T00:43:55ZengInstituto de Aeronáutica e Espaço (IAE)Journal of Aerospace Technology and Management2175-91462016-10-0184Anomalous Behavior of a Solid Rocket Motor Nozzle Insert During Static Firing TestRonald Izidoro Reis0Wilson Kiyoshi Shimote1Luiz Cláudio Pardini2Departamento de Ciência e Tecnologia Aeroespacial (DCTA)Departamento de Ciência e Tecnologia Aeroespacial (DCTA)Departamento de Ciência e Tecnologia Aeroespacial (DCTA)This paper presents the study and development of a firing test used to evaluate the behavior of a solid rocket motor. The motivation for the development of a subscale solid rocket motor with end burning propellant grain geometry arose from the need to evaluate the nozzle inserts of graphite for the possible replacement with the carbon fiber-reinforced carbon composite. These subscale solid rocket motors, simulating full scale motor operating time, but with mass flow far below, aim to determine the ablative characteristics of composite materials as a function of operating time. The objective was to correlate the mass flow between subscale solid rocket motors and full scale using insert data materials such as graphite and carbon fiber-reinforced carbon composites, which have ablative characteristics determined in subscale solid rocket motors used at the Instituto de Aeronáutica e Espaço. The critical section to evaluate the test device is rocket nozzle throat region. Analysis of the materials of the subsonic and supersonic nozzle insert parts was performed after the burning tests. It was found the formation of a thin layer of material deposited after the test. The deposited coating layer was analyzed by electron dispersive x-ray analysis and scanning electron microscopy. The results analyzed by these methods showed that there were aluminum and carbon in the coating. Finally, the material was analyzed by x-ray diffraction, and the results showed the presence of aluminum oxide. It was also noticed that, because of the unexpected coating deposition forming material in exit conical and throat of the insert that the effect of ablation was not observed.https://www.jatm.com.br/jatm/article/view/663PropulsionSubscale motoNozzle insertsGraphiteFiring test |
| spellingShingle | Ronald Izidoro Reis Wilson Kiyoshi Shimote Luiz Cláudio Pardini Anomalous Behavior of a Solid Rocket Motor Nozzle Insert During Static Firing Test Journal of Aerospace Technology and Management Propulsion Subscale moto Nozzle inserts Graphite Firing test |
| title | Anomalous Behavior of a Solid Rocket Motor Nozzle Insert During Static Firing Test |
| title_full | Anomalous Behavior of a Solid Rocket Motor Nozzle Insert During Static Firing Test |
| title_fullStr | Anomalous Behavior of a Solid Rocket Motor Nozzle Insert During Static Firing Test |
| title_full_unstemmed | Anomalous Behavior of a Solid Rocket Motor Nozzle Insert During Static Firing Test |
| title_short | Anomalous Behavior of a Solid Rocket Motor Nozzle Insert During Static Firing Test |
| title_sort | anomalous behavior of a solid rocket motor nozzle insert during static firing test |
| topic | Propulsion Subscale moto Nozzle inserts Graphite Firing test |
| url | https://www.jatm.com.br/jatm/article/view/663 |
| work_keys_str_mv | AT ronaldizidororeis anomalousbehaviorofasolidrocketmotornozzleinsertduringstaticfiringtest AT wilsonkiyoshishimote anomalousbehaviorofasolidrocketmotornozzleinsertduringstaticfiringtest AT luizclaudiopardini anomalousbehaviorofasolidrocketmotornozzleinsertduringstaticfiringtest |