Geometry that fails quietly
Bad TE, crossed panels or sparse LE curvature corrupt every polar. Without a quality gate, teams discover the problem after hours of analysis.
01 · Section · 2D & 3D aerospace
HENFOIL
Airfoil design, VIC polars, selection and loft — methods labelled, honesty gates on.
Wing-section decision workspace — create, condition, analyse, compare, select and archive airfoils with labelled methods.
Nature
Own the section decision before the aircraft campaign.
HENFOIL is browser-based airfoil design, analysis, selection and optimization for aerospace OEMs, Tier suppliers, UAV / eVTOL teams and labs. Geometry quality gates, VIC polars, inverse / optimize, parametric 3D wing loft and unit-span section FEA screens. Method IDs and honesty limits on every calculated number. Same HENDOI account as HENSYNTH, HENMESH, HENFLOW and HENSTRUCT.
Problem it solves
Stops tool-hopping and silent geometry failure so the section choice has a trail review can defend.
- Aerospace engineers choosing wing sections
- UAV / eVTOL developers iterating airfoils
- Universities, labs and students on shared plans
- Teams that need a documented selection trail
Problems in the field
Why teams need a dedicated section product
Tool hop without a trail
Create in one tool, polar in another, rank in a spreadsheet. Review cannot see why #1 won — only that someone preferred it.
Desktop lock-in
Installers and per-machine licenses slow OEM and UAV collaboration. A browser workspace keeps one account trail.
Over-claiming fidelity
Marketing that pretends a quick polar is a wind-tunnel certificate. HENFOIL labels every method so you know what you bought.
2D capabilities
What HENFOIL does in 2D
PrepHF-NACA4-001 · CST · PARSEC
Create, import & digitize
NACA 4/5/6/16/6A families, analytic foils, CST / PARSEC, Selig–Lednicer DAT, and image digitize → calibrate → trace → commit.
Decision
Geometry quality gate
Repair, repanel, normalize, t/c · camber · LE radius · curvature metrics with PASS / WARNING / FAIL before analysis burns compute.
SolveHF-TAT-001 → HF-PANEL-002 → HF-VIC-004
Analysis ladder → VIC
Thin-airfoil → Hess–Smith panel → Thwaites–Head IBL → VIC viscous polars. Escalate only when the decision needs more physics.
DecisionHF-POLAR-001 · HF-OPT-001 · HF-INV-001
Compare, select, batch, inverse
Weighted compare with why-#1, envelopes, batch viscous runs, inverse CL / Cp screens, grid / gradient / Bayesian optimize and robustness.
SolveFEA-AFSEC-001
Unit-span section FEA
Early box stress / buckle / hinge screen on the section — not a certification spar engine.
3D capabilities
What HENFOIL does in 3D
Each row is labelled solve, visualize, prep or decision — so review never confuses a morph view with a full 3D physics campaign.
Visualize
Parametric wing loft
Extrude / taper / sweep / twist loft with station-wise VIC at local Reynolds numbers — communication and section stacking, not 3D wing RANS.
Prep
STEP / IGES loft export
Manufacturing and CAD handoff of the lofted wing surface with provenance from the selected section.
Solve · HF-RANS3D-001
Gated wing-block RANS screen
Optional stacked wing-block screening job when the decision needs a labelled 3D field picture — still not full-aircraft certification CFD.
Design loop
From first input to labelled output
- 01Create, import or digitize a section and store it in My Airfoils
- 02Pass the geometry quality gate (repair / repanel / metrics)
- 03Climb the analysis ladder; build VIC polars at the right Re and Mach
- 04Compare, select, inverse or optimize — keep the ranking trail
- 05Optional: loft a 3D wing and run a unit-span section FEA screen
- 06Export datasheet / design-review PDF, STEP/IGES loft or design package
Compared to existing tools
Where HENFOIL fits — and where it does not.
XFOIL-class desktop solvers
Excellent for interactive polar work on a single machine. HENFOIL adds geometry gates, selection ranking, batch jobs, inverse / optimize, 3D loft export and a documented trail in the browser.
XFLR5 / QBlade-style suites
Strong for teaching and early wing/airfoil experiments. HENFOIL focuses the section decision for OEM / UAV selection with honesty gates and archive packages.
Full RANS / certification CFD
Required later. Wrong cost for first section ranking. HENFOIL’s ladder starts cheap and escalates only when the decision needs more physics.
Product home
The working product lives at henfoil.hendoi.com. Register on hendoi.com first if you do not have a session.
Open HENFOIL →Honesty
Clear limits on this product
VIC ≠ wind tunnel
VIC is the production polar engine for early decisions. It is not a tunnel substitute and not flight-Re wall-resolved RANS.
Screens stay labelled
IB pictures, Euler, eⁿ and gated RANS-SA are screening tools — not certification certificates.
3D loft ≠ 3D CFD authority
Parametric loft and station-wise VIC communicate the wing. They do not replace volume RANS or flight-test correlation.
Stack handoffs
How HENFOIL connects
Next
HENSYNTH
Carry the chosen section into aircraft mission, compliance, trades and conceptual reports.
Overview →
Next
HENMESH
Feed defended ordinates and Re / Mach / α intent into aerospace C/O and wing-extrude mesh prep.
Overview →
Next
HENFLOW
Escalate the same section into labelled panel → NS-SA → ns-wing-3d CFD screens when polars are not enough.
Overview →
Aerospace industry collaboration
Share thoughts and ideas — help us build better solutions
We are looking for aerospace industry collaboration. Share your thoughts, ideas and real workflow challenges so we can improve our products and deliver the best solutions for OEMs, UAV / eVTOL teams, labs and aeronautical engineering companies.
- What slows your team with tools you use today?
- What would make HENFOIL, HENSYNTH, HENFLOW, HENSTRUCT or HENMESH more useful in your pipeline?
- Ideas for mesh, CFD or structural workflows we should prioritise next?
Get started
Create a HENDOI account and open HENFOIL.
Student USD 9, Professional USD 29, Team USD 89 — same plans across all five workspaces. Plans differ by usage meters, not by locking core methods.