Design Optimization of Shielding Effect for Aircraft Engine Noise

Aircraft design optimization

In this paper we describe briefly a set of procedures for the optimal design of full mission aerospace systems. This involves multiphysics simulations at various fidelity levels, surrogates, distributed computing and multiobjective optimization. Low-fidelity analysis is used to populate a database of inputs and outputs of the system simulation and Neural Networks are then designed to generate i...

Sensor Selection Optimization for Aircraft Gas Turbine Engine Health Estimation

Sensor selection optimization can lead to significant improvements in the controllability and observability of a dynamic system. The aim of this research is to investigate optimal or alternate measurement sets for aircraft gas turbine engine health parameter estimation. A brute force search for the best sensor set is too computationally expensive. Therefore, a Monte Carlo approach is used to pe...

Fuzzy Model Optimization Using Genetic Algorithm for Aircraft Engine Diagnosis

An accurate and up-to-date diagnostic model is critical for economic aircraft engine operation. However, for many commercial airline fleets, monitoring and diagnosing engine faults is often left to human operators due to lack of effective modeling. Individuals must manually interpret engine performance parameters and this results in inconsistent evaluation and the potential for error. A recent ...

A Rapid Geometry Engine for Preliminary Aircraft Design

A rapid geometry engine (RAGE) has been developed to allow for preliminary design analysis without labor-intensive CAD support. The geometry tool builds complex aircraft configurations using a component-based approach. Basic algorithms for creating the primary components are presented and discussed. Examples of many widely varying geometry models are shown. A select geometry model is analyzed w...

NASA Glenn ’ s Contributions to Aircraft Engine Noise Research