• Kinthali Ravi Teja
• B. Keerthi
• Dr. M. Murali Krishna

Reduction of drag and heat load are two important aspects considered for hypersonic vehicles. To reduce the heat load, thermal protection system (TPS) is used. But the cost estimation of thermal protection system used in the hypersonic vehicles to reduce aero heating is very high. To overcome drag and heat load in hypersonic vehicles at low cost there is a need to find an alternative solution. So, by introducing a multidisc aerospike at frontal region of the hemispherical blunt nose of space vehicle, the drag and temperature can be reduced. By varying shape and geometry of multidisc of the aerospikes, its impact on performance is evaluated using best aerospike length to nose diameter ratio. Further, the combination of different geometries for the forward and intermediate disc yielded better results. Thus the thermal and drag reduction of a hypersonic vehicle is optimized and analyzed using fluent analysis under the characteristics of mach number, far-field pressure, velocity and temperature. Hence, from the results it was concluded that the combination of geometrical blunt nose with a triangular disc aerospike pointed edge facing away from the nose with an intermediate flat disc provides comparatively more amount of drag and temperature reduction of hypersonic vehicle.

Thermal Protection System (TPS), Aerospike, Drag, Mach number, Blunt nose, fluent analysis

"Optimization of Topology of Multi Disc Aero Spike on Hypersonic Vehicles for the Reduction of Drag and Temperature at Blunt Nose Using CFD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.658-665, December-2018, Available :http://www.jetir.org/papers/JETIR1812494.pdf

"Optimization of Topology of Multi Disc Aero Spike on Hypersonic Vehicles for the Reduction of Drag and Temperature at Blunt Nose Using CFD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp658-665, December-2018, Available at : http://www.jetir.org/papers/JETIR1812494.pdf