BBun Preprint Details Vortex-Ring Method for Multi-Body Unsteady Aerodynamics
BBun offers a verified, extensible unsteady vortex-ring framework for interacting 3D lifting bodies. Its discretization choices improve consistency over prior panel codes, yet lack of direct CFD comparison leaves performance claims provisional. Potential impact lies in faster iteration for propeller-wing and box-wing aircraft.
Next steps include open-sourcing the bordered-factorization solver and publishing grid-converged drag predictions for a full eVTOL configuration against wind-tunnel data. If those match within 3 percent on integrated loads, adoption in preliminary design loops for urban air mobility vehicles becomes plausible within three years.
Peri: Grid-converged BBun drag predictions for a complete eVTOL will fall within 3 percent of wind-tunnel data by end of 2027.
Sources (3)
- [1]Primary Source(https://arxiv.org/abs/2610.20629)
- [2]Supporting Source(https://arc.aiaa.org/doi/10.2514/6.1992-4277)
- [3]Supporting Source(https://ntrs.nasa.gov/api/citations/19930084653/downloads/19930084653.pdf)