Optimization of positional parameters of close-formation flight for blended-wing-body configuration

Tao, Yang; Liu, Zhiyong; Xiong, Neng; Sun, Yang; Lin, Jianzhong

doi:10.1016/j.heliyon.2018.e01019

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…An example of RBF meta-modeling in aerospace is the prediction of aerodynamic coefficients for a blended-wing-body (BWB) configuration. In a recent study, researchers used RBF to build a surrogate model for the prediction of lift and drag coefficients for a BWB configuration [31]. Another example is the use of RBF for the optimization of winglet spanwise camber morphing at different flight phases [32].…”

Section: Multivariate Adaptive Regression Splines (Mars) -It Is a Reg...mentioning

confidence: 99%

Evaluating Diverse Meta-Modeling Approaches for Predicting Performance Characteristics of a Twin Air Intake Based on Experimental Data

AMIRI,

Küçük

2024

Preprint

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Air intakes are critical components in maximizing the efficiency of jet-powered engines. Their diverse designs, ranging from conventional shapes to innovative configurations, coupled with the intricate interplay of fluid dynamics, boundary layer effects, and structural considerations, render the determination of their performance characteristics a time-consuming task. However, a meticulous and confident evaluation of these characteristics is the key to achieving optimal air intake design and, consequently, significant enhancement of overall engine performance. This article assesses various meta-modeling approaches for predicting the performance characteristics of a twin air intake system. A comprehensive exploration of meta-modeling methods, particularly those specifically tailored for data derived from experiments, is presented. A database of 4000 experimentally obtained runs is utilized to construct train and test data for diverse models, including polynomials, decision trees, random forest regression, multivariate adaptive regression splines, and neural networks. The performance of each model is rigorously evaluated based on goodness of fit, precision, accuracy, monotonicity, and interpretability. This study provides a cost-effective and time-efficient alternative for predicting crucial flow parameters associated with the air intake of jet engines. The results reveal that the Random Forest Regression (RFR) model outperforms all other models across all evaluated metrics, demonstrating its superior effectiveness in predicting the performance characteristics of the twin air intake system.

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Section: Multivariate Adaptive Regression Splines (Mars) -It Is a Reg...mentioning

confidence: 99%

Evaluating Diverse Meta-Modeling Approaches for Predicting Performance Characteristics of a Twin Air Intake Based on Experimental Data

AMIRI,

Küçük

2024

Preprint

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“…The calculation adopts the in house calculation program, and has carried out a number of research work. [7][8][9] 2.2. Turbulence model Spalart-Allmaras(SA) turbulence model [10] is used for calculation.…”

Section: Introductionmentioning

confidence: 99%

Study on aerodynamic characteristics of flying wing knapsack inlet duct

Tao

et al. 2022

J. Phys.: Conf. Ser.

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Based on the extended shape of the existing flying wing standard model with small aspect ratio, this paper studies the flow field characteristics around the model at different angles of attack and the flow field characteristics of the knapsack dual release inlet when the Mach number is equal to 1.8. The pressure coefficient distribution, velocity distribution and eddy characteristics of typical states are illustrated. The results show that the lip of the knapsack inlet has a significant effect on the flow characteristics of the back and abdomen of the model. After passing through the inlet lip and the S-shaped bend in the front section, the internal pressure distribution of the inlet is relatively uniform, there are obvious vortices in the inlet, the core flow near the tail nozzle flows smoothly, and the strong vortices are only near the wall.

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An approach for formation design and flight performance prediction based on aerodynamic formation unit: Energy-saving considerations

QIAO,

MA,

WANG

et al. 2024

Chinese Journal of Aeronautics

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Optimization of positional parameters of close-formation flight for blended-wing-body configuration

Cited by 7 publications

References 7 publications

Evaluating Diverse Meta-Modeling Approaches for Predicting Performance Characteristics of a Twin Air Intake Based on Experimental Data

Evaluating Diverse Meta-Modeling Approaches for Predicting Performance Characteristics of a Twin Air Intake Based on Experimental Data

Study on aerodynamic characteristics of flying wing knapsack inlet duct

An approach for formation design and flight performance prediction based on aerodynamic formation unit: Energy-saving considerations

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