Author/Authors :
mohammadi alasti Behzad نويسنده Department of Acricultural Machinery, Bonab Islamic Azad University, Bonab , Abbasgholipour Mahdi نويسنده , Saeedi Heydari Mina نويسنده PhD degree student in Material Engineering at Faculty of Materials & Manufacturing Processes , Ghezavati Jalaleddin نويسنده PhD degree student in Mechanical Engineering at Bonab Branch, Islamic Azad University, Iran.
Abstract :
Advanced tactical missiles need radomes of higher strength capable of
withstanding higher velocities and temperatures and longer flight durations. Radomes must be stable
at temperature above 1400oC and must have a low and steady thermal
dielectric constant, low thermal expansion coefficient, high resistance to thermal shock, high
stiffness and strength, high chemical stability, and high resistance against moisture. Silicon
nitride, in comparison with other materials used in the fabrication of radomes (e.g., fused Silica,
pyroceramics, etc.), enJoys superior properties, and it can also be used at flight speeds higher
than Mach 7. In this paper, various types of raw materials used in the
fabrication of radomes have been investigated.
