Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
THERMAL ANALYSIS OF THE GENERIC SCRAMJET FLYING AT 30 KM ALTITUDE WITH MACH NUMBER 6.8
Submission Author:
Emanuel Mendes , RN
Co-Authors:
Paulo Toro, Emanuel Mendes, Jonatha Wallace da Silva Araújo, George Marinho, Gilvan Borba, Felipe Jean da Costa, Israel Rêgo
Presenter: Jonatha Wallace da Silva Araújo
doi://10.26678/ABCM.ENCIT2018.CIT18-0177
Abstract
A generic hypersonic airbreathing propulsion based on supersonic combustion ramjet (scramjet) technology has been designed, at the Universidade Federal do Rio Grande do Norte (UFRN), using analytical theoretical analysis (engineering approach). Aerospace vehicles flying at hypersonic speeds (corresponding to Mach number higher than 5) undergo a process of temperature increase at the structural wall of the vehicle and surrounding. Knowledge of the phenomenon of aerodynamic heating, as well as determining the intensity, is of paramount importanceto estimate the surface temperature, and to the material specification to be used for its manufacture, its thermal protection that keeping the wall temperature and in the indoor temperature of vehicle at acceptable levels. Fay and Riddell, Lees and Eckert methodologies are used to evaluate the aerodynamic heating at the stagnation point, blunted-nose and plane surfaces, respectively, considering under calorically perfect (γ=1.4) gas. The final paper will show results of surface temperature considering material specification and thickness of the structural materials of the scramjet.
Keywords
Scramjet, supersonic combustion, hypersonic airbreathing propulsion
