Mohamed Elrefaie
IDETC-CIE 2025

BlendedNet: A Blended Wing Body Aircraft Dataset and Surrogate Model for Aerodynamic Predictions

Nicholas Sung, Steven Spreizer, Mohamed Elrefaie, Kaira Samuel, Matthew C. Jones, Faez Ahmed

Massachusetts Institute of Technology

BWB
Blended wing body geometries
High-fidelity CFD
Aerodynamic ground truth
Open data
Hosted on Harvard Dataverse
The dataset

Bringing the DrivAerNet recipe to aircraft

Blended wing body (BWB) configurations promise major fuel-efficiency gains, but designing them requires expensive CFD campaigns over unconventional geometry. BlendedNet applies the data-driven playbook pioneered in automotive aerodynamics to aircraft: a public dataset of parametrically generated BWB geometries with high-fidelity CFD, paired with a neural surrogate for rapid aerodynamic prediction.

BlendedNet: parametric blended wing body geometries with simulated aerodynamic fields.
BlendedNet: parametric blended wing body geometries with simulated aerodynamic fields.
Contributions

What the paper delivers

Public BWB dataset

Parametric blended-wing-body geometries with high-fidelity CFD — openly released on Harvard Dataverse for the aircraft-design community.

Aerodynamic surrogate

A learned model predicts aerodynamic performance directly from geometry, replacing hours of simulation in early-stage design.

Design-space coverage

Systematic parametric sampling spans the practically relevant BWB configuration space, enabling generalizable learning.

Reference

Citation

@proceedings{sung2025blendednet, author = {Sung, Nicholas and Spreizer, Steven and Elrefaie, Mohamed and Samuel, Kaira and Jones, Matthew C. and Ahmed, Faez}, title = {BlendedNet: A Blended Wing Body Aircraft Dataset and Surrogate Model for Aerodynamic Predictions}, series = {IDETC-CIE}, pages = {V03BT03A049}, year = {2025} }
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