Not CFD
Analytical and semi-empirical methods for conceptual work. No Navier–Stokes solver for certification.
Aircraft conceptual design software — live now
HENSYNTH
Close the mission early. Shape the aircraft. Screen, trade and report — with every calculated number labelled for what it is.
HENSYNTH is HENDOI’s aircraft-level product for conceptual and preliminary design. It is live in the browser on your HENDOI account — the same login as HENFOIL. Conceptual analysis only: not a wind-tunnel campaign and not a certification report.
What it is
A browser workspace for the aircraft, after the section is chosen.
Purpose: help OEMs, UAV teams, labs and design offices answer “does this aircraft meet the mission?” at conceptual fidelity — before they commit to expensive CFD, FEA or hardware.
You state the mission on Requirements, enter or synthesize geometry, run multidisciplinary screening (atmosphere, weight, aerodynamics, propulsion, performance), read a compliance matrix with margins, then continue into Mission, Performance, Trades, Optimize and Reports. A value the engine did not compute is not invented.
HENFOIL remains the section product for airfoil design, analysis and selection. Carry a chosen section into HENSYNTH for aircraft-level work. Both products share Student, Professional and Team plans.
Not FEA
No structural finite-element certification model. Preliminary mass and loads only.
Requirement driven
Each mission target is tracked as pass, warning or fail, with the margin shown.
Problems it solves
Pain points aerospace teams hit before the first solid trade.
Scattered spreadsheets
Mission targets, mass build-up, drag estimates and compliance live in different files. Nobody can see which number belongs to which method.
Late CFD for early questions
Teams burn days on mesh and solver setup when the real question is still “does this mission close?” at conceptual fidelity.
No pass / fail trail
Review asks why a candidate won. Without a compliance matrix and margins, the answer is opinion, not evidence.
Section work stuck apart from the aircraft
Airfoil tools stop at the section. Aircraft tools ignore how the section was chosen. The trail breaks between products.
Compared to existing tools
Where HENSYNTH fits — and where it does not.
Spreadsheets & one-off scripts
Fast to start, hard to audit. HENSYNTH keeps geometry, requirements, screening and reports in one browser workspace with a method name on each calculated number.
Full CFD / FEA suites
Essential later. Wrong cost and fidelity for first mission closure. HENSYNTH is conceptual and preliminary screening — not Navier–Stokes or certification FEA.
Legacy desktop conceptual codes
Often install-heavy, hard to share, and weak on a modern compliance trail. HENSYNTH runs in the browser on your HENDOI account so OEM and UAV teams can share the same project trail.
HENFOIL alone
HENFOIL owns the airfoil. HENSYNTH owns the aircraft after the section is chosen. Use both on one account — section → mission → trade.
Design loop
From mission to report
- 01Define the mission on Requirements
- 02Enter aircraft geometry and save
- 03Run screening — atmosphere, weight, aerodynamics, propulsion and performance
- 04Read compliance PASS / FAIL and margins
- 05Synthesize candidates, then Mission, Performance, Trades or Optimize
- 06Download zip packages or the analyze PDF from Reports
Aircraft types
Configurations the product holds
- Conventional fixed-wing
- Fixed-wing UAV
- Electric UAV
- Piston-propeller
- Flying wing, canard and glider
- Turbojet, turbofan and turboprop
- eVTOL, multicopter and tilt-rotor
Propulsion kinds in the same product: electric, piston, hybrid, turbojet, turbofan and turboprop. Screening depth depends on the configuration you enter.
Analysis
What the engine calculates
Core analysis on a run, then the decision modules aircraft and UAV teams use at the conceptual stage. Prices stay Student USD 9, Professional USD 29 and Team USD 89 — the same plans as HENFOIL.
Atmosphere
ISA with an optional temperature offset, up to 20 km.
Geometry
Trapezoidal wing, mean aerodynamic chord, and tail volumes.
Aerodynamics
Wetted-area drag, a parabolic polar, Schrenk spanload, and a horseshoe vortex lattice.
Weights and CG
Component build-up, iterative maximum takeoff weight, and loading cases.
Propulsion
Electric chain, piston power lapse, and a hybrid split.
Performance
Cruise, range, endurance, climb, takeoff and landing.
Mission
Coupled segments for mass, fuel or state of charge, altitude and center of gravity.
Stability
Static margin, trim, and approximate modes.
Optimization
Sweeps, design of experiments, Pareto, Monte Carlo and robustness.
Reports
An engineering report from calculated blocks, with a method name on each number.
Learn more
From the HENDOI blog
Guides on requirements, compliance, synthesis, mission modules and how HENSYNTH sits next to HENFOIL — written for engineers.
- HENSYNTH is live — aircraft conceptual design
- HENSYNTH vs HENFOIL — section to aircraft
- Requirements page — mission targets
- Compliance matrix — PASS / FAIL
- Synthesize candidates
- Mission, Performance, Trades, Optimize
- UAV electric mission screening
- Who HENSYNTH is for — OEM & UAV
Need the airfoil first?
Design, analyse and select the section in HENFOIL, then bring the aircraft into HENSYNTH.
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 or our upcoming stack (HENMESH, HENFLOW, HENSTRUCT) more useful in your pipeline?
- Ideas for mesh, CFD or structural workflows we should prioritise next?
Get started
If you do not have an account yet, create one and try HENSYNTH.
Register on HENDOI, pick a plan, open HENSYNTH from your dashboard, and run your first mission screen. Same account unlocks HENFOIL for the section. Student USD 9, Professional USD 29, Team USD 89.