Thermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule

Mars has only thin atmosphere composed mainly of carbon dioxide that differs significantly from the atmosphere of Earth in terms of characteristics of reentry flows. To connect with the orbiter, the Mars entry capsule is provided with titanium pipes and other units installed on the heat-shield. Thes...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Miao Wenbo, Li Qi, Li Junhong, Zhou Jingyun, Cheng Xiaoli
Formato:	article
Lenguaje:	EN
Publicado:	American Association for the Advancement of Science (AAAS) 2021
Materias:	Motor vehicles. Aeronautics. Astronautics TL1-4050 Astronomy QB1-991
Acceso en línea:	https://doaj.org/article/668f41469233438385dc2cc47a96475e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:668f41469233438385dc2cc47a96475e
record_format	dspace
spelling	oai:doaj.org-article:668f41469233438385dc2cc47a96475e2021-11-29T08:35:10ZThermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule2692-765910.34133/2021/9754068https://doaj.org/article/668f41469233438385dc2cc47a96475e2021-01-01T00:00:00Zhttp://dx.doi.org/10.34133/2021/9754068https://doaj.org/toc/2692-7659Mars has only thin atmosphere composed mainly of carbon dioxide that differs significantly from the atmosphere of Earth in terms of characteristics of reentry flows. To connect with the orbiter, the Mars entry capsule is provided with titanium pipes and other units installed on the heat-shield. These units will create significant local interaction flow on the surface of the capsule and cause additional heating on the surface of the shield during the entry of the capsule. With a view to interaction thermal environment issues for the surface of the shield, in this paper, the characteristics of protrusion interaction flow on different location of the shield were studied by means of numerical simulation. Heating mechanisms of protuberances on different location were derived by analyzing characteristic parameters such as local flow velocity, pressure, and Mach number. The results show that the interaction thermal environment of protuberances in the windward area is smaller than that of protuberances in the leeward area, mainly because subsonic flow dominates in the windward area, and the interaction is weak, while in the leeward area, the direction of flow intersects with protuberances to form a boundary layer shear flow, which results in a stronger interaction before the protuberances.Miao WenboLi QiLi JunhongZhou JingyunCheng XiaoliAmerican Association for the Advancement of Science (AAAS)articleMotor vehicles. Aeronautics. AstronauticsTL1-4050AstronomyQB1-991ENSpace: Science & Technology, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Motor vehicles. Aeronautics. Astronautics TL1-4050 Astronomy QB1-991
spellingShingle	Motor vehicles. Aeronautics. Astronautics TL1-4050 Astronomy QB1-991 Miao Wenbo Li Qi Li Junhong Zhou Jingyun Cheng Xiaoli Thermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule
description	Mars has only thin atmosphere composed mainly of carbon dioxide that differs significantly from the atmosphere of Earth in terms of characteristics of reentry flows. To connect with the orbiter, the Mars entry capsule is provided with titanium pipes and other units installed on the heat-shield. These units will create significant local interaction flow on the surface of the capsule and cause additional heating on the surface of the shield during the entry of the capsule. With a view to interaction thermal environment issues for the surface of the shield, in this paper, the characteristics of protrusion interaction flow on different location of the shield were studied by means of numerical simulation. Heating mechanisms of protuberances on different location were derived by analyzing characteristic parameters such as local flow velocity, pressure, and Mach number. The results show that the interaction thermal environment of protuberances in the windward area is smaller than that of protuberances in the leeward area, mainly because subsonic flow dominates in the windward area, and the interaction is weak, while in the leeward area, the direction of flow intersects with protuberances to form a boundary layer shear flow, which results in a stronger interaction before the protuberances.
format	article
author	Miao Wenbo Li Qi Li Junhong Zhou Jingyun Cheng Xiaoli
author_facet	Miao Wenbo Li Qi Li Junhong Zhou Jingyun Cheng Xiaoli
author_sort	Miao Wenbo
title	Thermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule
title_short	Thermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule
title_full	Thermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule
title_fullStr	Thermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule
title_full_unstemmed	Thermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule
title_sort	thermal environment and aeroheating mechanism of protuberances on mars entry capsule
publisher	American Association for the Advancement of Science (AAAS)
publishDate	2021
url	https://doaj.org/article/668f41469233438385dc2cc47a96475e
work_keys_str_mv	AT miaowenbo thermalenvironmentandaeroheatingmechanismofprotuberancesonmarsentrycapsule AT liqi thermalenvironmentandaeroheatingmechanismofprotuberancesonmarsentrycapsule AT lijunhong thermalenvironmentandaeroheatingmechanismofprotuberancesonmarsentrycapsule AT zhoujingyun thermalenvironmentandaeroheatingmechanismofprotuberancesonmarsentrycapsule AT chengxiaoli thermalenvironmentandaeroheatingmechanismofprotuberancesonmarsentrycapsule
_version_	1718407466702602240

Thermal Environment and Aeroheating Mechanism of Protuberances on Mars Entry Capsule

Ejemplares similares