molding of low-cost composite ceramic insulation materials and its application in thermal protection of missile over large area
- Paper number
IAC-13,C2,P,34.p1,x17668
- Author
Mr. Zhengshuai Yin, China
- Coauthor
Mr. Jun Zhang, China
- Coauthor
Mr. Pingjiang She, China
- Coauthor
Mr. Zhibin Zhang, China
- Year
2013
- Abstract
Under the harsh environment of long-endurance and high Mach, the temperature of missile exterior surface is too high to maintain the airframe aerodynamic shape and strength.Besides, the severe aerodynamic heating will be a threat to the normal working of the instrument in cabin. Therefore, thermal protection of projectile over large area is essential, and the research and development of high-temperature anti-insulation materials has become an urgent problem to the improvement of missile. In this paper, low-cost composite ceramic insulation materials were made by cheap high-silica fiber impregnated silica sol. The optimum parameters of fiber weave, composite numbers and heat treatment system were established through a large number of technological trials. The composite material had a good force thermal property. Its tensile strength was above 35MPa, and its bending strength was above 60MPa, so it could remain intact at 1000℃ablated 5min.Compared to silicon carbide and silicon nitride ceramic composite materials, its costs were lower and processing performance was better. In addition, it was high cost-effective and was suitable for application over large area. In order to solve the adhesion strength of the composite ceramic material and the elastomer, anti-insulation structure specimen coupled by silicon carbide screws and nuts was investigated, and its heat flow experiments was conducted. The experimental results showed that the surface of anti-insulation structure was intact, the structure was no damage, and the connection strength was reliable. The anti-insulation structure can satisfy the requirements of the thermal protection of projectile in large area, so it has a good application prospects.
- Abstract document
- Manuscript document
IAC-13,C2,P,34.p1,x17668.pdf (🔒 authorized access only).
To get the manuscript, please contact IAF Secretariat.