Assessment of Landing System Concepts for the ExoMars Mission
- Paper number
IAC-05-A5.2.04
- Author
Mr. Regnier Pascal, EADS Astrium, France
- Coauthor
Dr. Charles Koeck, EADS Astrium, France
- Coauthor
Mr. Sembely Xavier, EADS Astrium, France
- Coauthor
Mr. Slade Richard, EADS Astrium, United Kingdom
- Coauthor
Mr. Tran Philippe, EADS Astrium, France
- Year
2005
- Abstract
The purpose of this work was the development and investigation of the ablative, thermal and mechanic properties of quartz phenolic composite for thermal protection systems. This research was carried out in the Brazilian Aerospace Institute being part of the "SARA Project", an Atmospheric Reentry Satellte. In this work ablative and mechanical properties of two different kind of quartz phenolic composites were investigated. The first one was prepared by using woven fabric quartz and a resole-type phenolic resin. The resin has a viscosity of 165 mPa.s at 20°C. The prepreg material was cured by heating at 175? C under pressure of 70 bar in a mold. The resin content of the prepreg obtained was about 40The second composite was prepared by using chopped fabric quartz cut in pieces of different sizes, with area from 4 to 9 cm2. The same content of resin and cycle of curing as mentioned above was utilized. The mechanical properties evaluated were tensile and shear strength. The ablative tests were carried out in a high-energy air plasma in ambient atmosphere and the mass losses were measured for different exposure time and distance of the samples from the torch. The variation of temperature along the composites was evaluated by the insertion of thermocouples in different positions into the samples. The heat of ablation and specific heat was also calculated. The microstructure of the composites after the exposition to the plasma torch was investigated by Scanning Electron Microscopy (SEM) The data obtained in this work related to the comparison between these two materials are not found in literature, so that this work can be classified as innovative.
- Abstract document
- Manuscript document
IAC-05-A5.2.04.pdf (🔒 authorized access only).
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