MULTI-DISCIPLINARY DESIGN OPTIMIZATION OF HYPERSONIC AIR-BREATHING VEHICLE

Multi-loop Gain-scheduling Control of Flexible Air-breathing Hypersonic Vehicle

For a flexible air-breathing hypersonic vehicle model, this paper is concerned with the application of linear control theory to address its complex control problem over wide range of flight conditions. Because of the complexity of the numerical nonlinear model of the vehicle dynamics, a curve-fitted model in closed form is created. Based on the analytical model, a linear parameter-varying (LPV)...

Optimization of Air-breathing Hypersonic Aircraft Design using Euler Codes and Genetic Algorithms

An advanced, modular paneling scheme has been developed for atmospheric flight vehicles with an aim of predicting the drag during hypersonic flight. A generic, three-dimensional grid generation algorithm has been developed for this effort that allows the construction of detailed aircraft geometries using the concept of geometric overlap in three-dimensional spaces. The use of Bernstein polynomi...

Optimization of Air-breathing Hypersonic Aircraft Design for Maximum Cruise Speeds using Genetic Algorithms

This paper describes an effort to discover the highest practical flight velocity possible using air-breathing propulsion powered vehicles. The methodology includes modeling of all the key performance characteristics of a hypersonic vehicle along with a genetic algorithm based optimization study. A flexible and robust geometric modeling scheme based primarily on the use of Bernstein polynomials ...

Multi-disciplinary Design Optimization Strategy in Multi-stage Launch Vehicle Conceptual Design

Aerothermoelastic Simulation of Air-Breathing Hypersonic Vehicles

This paper describes the development and implementation of a partitioned-based, multiphysics, multi-fidelity simulation framework for flexible hypersonic vehicles. This simulation framework will enable the study of the dominant physics needed for the generation of control-oriented models and will provide a reference model for flight control evaluation. A partitioned-based solution is employed t...