MIRKA Heat Shield Experiment HEATIN-Theoretical and Experimental Approach to the Surface Protected Ablator

机译：Mirka热盾试验热量 - 理论和实验方法，表面保护烧蚀器

获取原文

页面导航

摘要
著录项
相似文献
相关主题

摘要

The Surface Protected Ablator (SPA) is a lightweight and cost effective thermal protection for single use reentry capsules. It is characterised by a combination of load carrying structure, ablator and abrasion protection system. A simulation software has been developed to predict the thermal behaviour of the SPA during plasma wind tunnel tests and under atmospheric reentry conditions. Test samples have been exposed to different aerothermal heat fluxes. Test results have been used to calibrate the numerical model and to determine unknown properties of the ablative material. The calibrated model was applied for accurate flight predictions of the MIRKA reentry.

机译：表面保护的烧蚀器（SPA）是一种轻质和成本有效的热保护，用于单用再入胶囊。其特征在于负载承载结构，烧蚀器和磨损保护系统的组合。已经开发了一种模拟软件来预测血浆风洞试验和大气再入条件下温泉的热行为。测试样品已暴露于不同的空气热量通量。测试结果已被用于校准数值模型并确定烧蚀材料的未知性质。校准模型用于米尔卡再入的准确飞行预测。

著录项

来源
《International Conference on Environmental Systems》|1997年||共1页
会议地点
作者
G. Reich; G.Jahn;
展开▼
作者单位

展开▼
会议组织
原文格式 PDF
正文语种
中图分类 U46-53;
关键词
入库时间 2022-08-20 19:22:19

相似文献

外文文献
中文文献
专利

1. Initial experimental demonstration of the principles of a xenon gas shield designed to protect optical components from soft x-ray induced opacity (blanking) in high energy density experiments [J] . Swadling G. F., Ross J. S., Manha D., Physics of plasmas . 2017,第3期

机译：初步实验证明氙气屏蔽的原理，旨在保护光学部件免受软X射线诱导的不透明度（消隐）的高能量密度实验
2. Computational Study of Impregnated Ablator for Improved Magnetohydrodynamic Heat Shield [J] . Nicholas J. Bisek, Ryan Gosse, Jonathan Poggie Journal of Spacecraft and Rockets . 2013,第5期

机译：改进的磁流体动力热屏蔽浸渍浸渍器的计算研究
3. Tarantulas (Araneae: Theraphosidae) use different adhesive pads complementarily during climbing on smooth surfaces: experimental approach in eight arboreal and burrower species Tarantulas (Araneae: Theraphosidae) use different adhesive pads complementarily during climbing on smooth surfaces: experimental approach in eight arboreal and burrower species Tarantulas (Araneae: Theraphosidae) use different adhesive pads complementarily during climbing on smooth surfaces: experimental approach in eight arboreal and burrower species [J] . Fernando Pérez-Miles, Carlos Perafán, Laura Santamaría Biology Open . 2015,第12期

机译：狼蛛（Araneae：Theraphosidae）在平滑表面上攀爬时互补地使用不同的粘合垫：八种树木和穴居动物的实验方法狼蛛（Araneae：Theraphosidae）在平滑表面上攀爬过程中互补地使用不同的粘合垫：实验地狼蛛（Araneae：Theraphosidae）在光滑表面上攀爬时互补使用不同的粘合垫：对八种树木和穴居树种的实验方法
4. MIRKA Heat Shield Experiment HEATIN-Theoretical and Experimental Approach to the Surface Protected Ablator [C] . G. Reich, G.Jahn International Conference on Environmental Systems . 1997

机译：Mirka热盾试验热量 - 理论和实验方法，表面保护烧蚀器
5. EXPERIMENTAL EVIDENCE FOR A TEMPERATURE-DEPENDENT SURFACE SHIELDING EFFECT INSIDE A COPPER TUBE. [D] . LOCKHART, JAMES MARCUS. 1976

机译：铜管内与温度有关的表面屏蔽效果的实验证据。
6. A ‘NanoSuit’ surface shield successfully protects organisms in high vacuum: observations on living organisms in an FE-SEM [O] . Yasuharu Takaku, Hiroshi Suzuki, Isao Ohta, 2015

机译：NanoSuit表面防护罩可在高真空下成功保护生物：在FE-SEM中观察活生物
7. This article presents a new numerical model describing the behaviour of a thermally thick wood sample exposed to high solar heat flux (above 1 MW/m2). A preliminary study based on dimensionless numbers is used to classify the problem and support model building assumptions. Then, a model based on mass, momentum and energy balance equations is proposed. These equations are coupled with liquid-vapour drying model and pseudo species biomass degradation model. By comparing to a former experimental study, preliminary results have shown that these equations are not enough to accurately predict biomass behaviour under high solar heat flux. Indeed, a char layer acting as radiative shield forms on the sample exposed surface. In addition to this classical set of equations, it is mandatory to take into account radiation penetration into the medium. Furthermore, as biomass contains water, medium deformation consecutively to char steam gasification must also be implemented. Finally, with the addition of these two strategies, the model is able to properly capture the degradation of biomass when exposed to high radiative heat flux over a range of sample initial moisture content. Additional insights of biomass behaviour under high solar heat flux were also derived. Drying, pyrolysis and gasification fronts are present at the same time inside of the sample. The coexistence of these three thermochemical fronts leads to char gasification by the steam produced from drying of the sample, which it is the main phenomenon behind medium ablation. [O] . Pozzobon, Victor, Salvador, Sylvain, Bézian, Jean Jacques 2018

机译：本文提供了一个新的数值模型，该模型描述了暴露于高太阳热通量（高于1 / MW / m2）的热厚木材样品的行为。基于无量纲数的初步研究用于对问题进行分类并支持模型构建假设。然后，提出了一种基于质量，动量和能量平衡方程的模型。这些方程式与液体蒸汽干燥模型和假物种生物质降解模型耦合。通过与以前的实验研究进行比较，初步结果表明，这些方程不足以准确预测高太阳热通量下的生物量行为。的确，在样品暴露的表面上形成了充当辐射屏蔽层的炭层。除了这套经典的方程式之外，还必须考虑到辐射向介质的渗透。此外，由于生物质中含有水，因此还必须在炭蒸气汽化后进行连续的介质变形。最后，通过添加这两种策略，该模型能够在一定范围的样品初始水分含量下暴露于高辐射热通量的情况下，正确捕获生物质的降解。还得出了在高太阳热通量下生物量行为的其他见解。样品内部同时存在干燥，热解和气化前沿。这三个热化学前沿的共存会导致样品干燥产生的蒸汽产生焦炭气化，这是介质烧蚀的主要现象。
8. Estimating Orion Heat Shield Failure Due To Ablator Cracking During The EFT-1 Mission. [R] . Vander Kam, J. C., Gage, P. 2016

机译：在EFT-1任务期间估计由于消融器开裂导致的猎户座热屏失效。

MIRKA Heat Shield Experiment HEATIN-Theoretical and Experimental Approach to the Surface Protected Ablator

摘要

著录项

相似文献

相关主题

期刊订阅