01
BEMT cores
Blade-element momentum models for multirotor/VTOL props.
Custom engineering software · Worldwide industrial delivery
Propeller aerodynamics for multirotor and VTOL when BEMT must match your product
Custom BEMT-based rotor and propeller aerodynamics solvers for multirotor and VTOL props — distinct from full helicopter rotorcraft stacks — for drone and eVTOL teams worldwide.
Built for: multirotor OEMs, VTOL propeller teams, eVTOL propulsion desks, and university rotor labs worldwide
Why OEMs commission custom solvers
Multirotor and VTOL props are not full helicopter rotors. Teams need BEMT-class tools sized for small-diameter, high-RPM, interaction-heavy configurations — without renting a heavy rotorcraft suite.
Hendoi builds custom rotor/propeller aerodynamics products focused on multirotor and VTOL: BEMT cores, performance maps, and hooks to 6-DOF and powertrain models.
Distinct from our full Rotorcraft Solvers line — this track is for drone and eVTOL propulsion productisation.
Industrial pain points we remove
Helicopter tools for drone propsWrong fidelity, wrong UX, wrong royalty math for startups.
Static thrust benches without a solver storyMaps must regenerate when geometry or RPM changes.
Inflow interaction ignoredMultirotor wakes change the map your 6-DOF needs.
No IP path for propulsion IPOEMs want owned prop tools next to the airframe brand.
Capability stack delivered
02
Performance maps
Thrust, power, and efficiency surfaces for your RPM band.
03
Geometry hooks
Import or parametric blade sections for trades.
04
6-DOF coupling
Clean exports into UAV flight-dynamics products.
05
Validation packs
Bench and literature cases for review boards.
06
Academy modules
Teachable prop labs for universities.
Industries & programs we serve
Multirotor OEMsVTOL startupseVTOL propulsionPropeller vendorsUAV research labsDefence small UASHobby-to-pro platformsSimulation housesUniversitiesR&D centres
Engagement deliverables
BEMT architecture and map coverage
Desktop solver with sample props
English validation notes
Links to UAV dynamics and eVTOL transition services
Frequently asked questions
How is this different from Rotorcraft Solvers?
Rotorcraft Solvers target full helicopter/rotorcraft programmes. This line is BEMT-first for multirotor/VTOL props.
Can you calibrate to our bench data?
Yes. Bench matching is a standard acceptance milestone.
CFD instead of BEMT?
We hybridise when needed — BEMT for maps, CFD for critical cases.
Global delivery?
English docs and milestone demos for propulsion and flight teams.
Scope multirotor/VTOL propeller aerodynamics solvers
Share blade geometry and RPM band. Hendoi returns a BEMT product plan and map workflow.