Physics that moves with the model.
Mass, thrust to weight, hover time and disc loading update on every edit. Each law is marked pass or fail, so you catch a bad idea in seconds, not at the review.
Physics that keeps up with you
No export, no spreadsheet, no waiting for a solver.
Drag a size
Change the prop diameter, the arm tube or the battery. Every dependent part moves and the numbers update as you drag.
- Parametric sizes with sliders
- Catalogue parts with real data
- As-is and improved variants side by side

Read the strip
The strip across the top of the canvas shows the numbers that decide whether the design flies: mass, hover time, thrust to weight.
- Full and empty tank hover times
- Disc loading and prop tip gap
- Payload systems get their own numbers

Fix what fails
The badge in the corner says Viable or lists the warnings. Click it to see each law, its value and its limit.
- Every law with its margin
- Warnings that point at the part
- Checks the agent runs after each stage

What gets checked
Mass and centre of mass
Summed from every part's real material and size, with the centre of mass shown on the model.
Thrust and hover
Thrust to weight, hover power and hover time from the motor and prop data you picked.
Battery and reserve
Energy, current and the hover time left after your landing reserve.
Clearances
Prop tip gaps, rotor padding and interference between parts.
Payload systems
Torque, drive power and pointing budgets for gimbals and pedestals.
Wiring
Bus voltage, current and wire gauge on the routed harness.
More of Speed

AI design agent
Describe the job in plain words.
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FEA and reports
Run FEA on the real parts in your browser.
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Benchmark
Benchmark runs your design through heat, cold, vibration and shock at MIL-STD-810H levels and shows which part runs out of margin first..
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Drawings
Views, sections, callouts, title blocks and GD&T, made from the 3D model and kept in step with it.
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Compare
Pick a motor, a battery, a bearing or a fastener.
Learn moreFrequently
asked questions
From the built-in catalogue of real motors, batteries, ESCs, bearings and fasteners, with the source of each number kept with it.
No. It is a design check that catches the obvious problems early. Flight tests and detailed analysis still settle the rest.
Ship hardware at the speed your programme moves
Open the app in your browser and have a checked concept on screen in minutes. No install, no licence server.
