Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
STRUCTURAL ANALYSIS OF THE BRAZILIAN 14-X HYPERSONIC AEROSPACE VEHICLE AT MACH NUMBER 10
Submission Author:
Felipe Jean da Costa , SP , Brazil
Co-Authors:
Israel Rêgo, Marco Antonio Sala Minucci, Tiago Rolim, Giannino Ponchio Camillo, Antonio Carlos de Oliveira, Paulo Toro
Presenter: Felipe Jean da Costa
doi://10.26678/ABCM.ENCIT2016.CIT2016-0658
Abstract
The Brazilian VHA 14-X is a technological demonstrator of a hypersonic airbreathing propulsion system based on supersonic combustion (scramjet) to fly at Earth’s atmosphere at 30 km altitude at Mach number 10, designed at the Prof. Henry T. Nagamatsu Laboratory of Aerothermodynamics and Hypersonics, at the Institute for Advanced Studies. Basically, scramjet is a fully integrated airbreathing aeronautical engine that uses the oblique/conical shockwaves generated during the supersonic/hypersonic flight, to promote compression and deceleration of freestream atmospheric air at the inlet of the scramjet. Scramjet is an aeronautical engine, without moving parts, therefore it is necessary another propulsion system to accelerate the scramjet to the operational conditions. Rocket engines are low-cost solution to launch scramjet integrated vehicle to flight at the test conditions. The Brazilian two-stage rocket engines (S31 and S30) are able to boost the VHA 14-X to the predetermined conditions for the scramjet operation, 30 km altitude but at Mach number 7. Therefore, it is needed to design the structure of the VHA 14-X waverider to support the aerodynamic loads during the atmospheric hypersonic flight at Mach number 10. Therefore, it is necessary design the structure of the 14-X waverider to support the aerodynamic loads during the atmospheric hypersonic flight at the conditions mentioned earlier. One-dimensional theoretical analysis, applied at 30 km altitude at Mach number 10, provide the pressure distribution over the 14-X waverider upper and lower surfaces. Structural materials for the stringers and ribs, and C-C as coating material were specified based on preliminary studies. Through the ANSYS Workbench software provides the Structural Numerical Analysis, using Finite Element Method, considering the 14-X waverider unpowered scramjet at 30 km altitude at Mach number 10, The results could be expressed in terms of the stress, strains and deformations.
Keywords
Scramjet, waverider, aerospace vehicle, structural analysis, 14-X waverider
