Darrieus Engineering Notebook
Vertical-Axis Wind Turbine & Generator Research
Swipe across the steps to see the complete notebook roadmap →
An engineering notebook connecting published vertical-axis wind turbine research to practical electrical generation.
Start with measured rotor evidence. Explore mechanical output, manufacturer generator data, operating-point predictions and electromagnetic braking—without confusing observations with projections.
Three published studies provide four rotor configurations. Select a case to save your starting point for Engineering Step 01.
NACA0024, two- and three-blade cases; 0.70 m diameter, reference wind 6 m/s. Includes bare-rotor and diffuser observations.
Three NACA0021 blades. 1.028 m diameter, 1.460 m height, 85 mm chord. Published rotor torque observations.
Three curved NACA0021 blades. Maximum diameter 1.51 m; reported projected area 1.50 m².
Three NACA0021 blades, 1.00 m diameter, 1.20 m height; tested at 8.5 m/s.
Source geometries and observations are research references. Geometry scaling, varying wind conditions and electrical load modelling are scenarios—not further experimental observations.
Turbine torque and generator electrical load together determine the operating point.
Engineering distinction: a turbine’s peak power coefficient does not independently fix its operating RPM. The rotor and connected load must be considered together.
All seven engineering steps are now available. Follow your selected rotor and generator from aerodynamic evidence through tuning, EM braking, controller rules and the mechanical build reference.
Inspect the selected rotor’s published Cp–TSR evidence and supported configurations.
Open Step 01 · interactive rotor model →Explore shaft RPM, torque and power using the selected experimental reference.
Open Step 02 · mechanical output →Inspect manufacturer datasheets, six documented winding variants, limits and available bench evidence.
Open Step 03 · Generator data →Tune the rotor–generator match, inspect torque intersections, compare wind-speed graphs and download matched results as CSV.
Open Step 04 · system tuning →Compare rotor driving torque against an exploratory winding-short braking curve; sweep wind speed through the Beaufort ranges.
Open Step 05 · EM braking →Review the Sense, Act, Protect and Validate design rules, possible control approaches and manufacturer references.
Open Step 06 · controller design rules →Review your selected rotor drawings and generator, estimated blade-set pricing and a copyable freight enquiry.
Open Step 07 · mechanical & build →The models and their evidence limits remain unchanged by this roadmap. Exploratory braking, electrical estimates and high-wind extrapolations are not verified operating or safety predictions. Warlock Engineering privacy policy.