Parametric FPV quad designer
249 grams.
Battery included.
Poltergeist is a parametric designer for 3D-printed FPV quads. Live mass, thrust and flight-time verdicts. Real FEA with its assumptions on the table. One print button, wired to your farm. Everything under the sub-250 g line — on purpose.
FIG. 01 — The mass budget
Every gram has to
earn its seat.
The budget bar is the designer's spine — parts check in, attribution stays per-part, and the verdict flips the moment you cross the line. Scroll to build one.
FIG. 02 — The designer
Parameters in.
Verdicts out.
This panel isn't a screenshot — drag the wheelbase. Frame mass, all-up weight and thrust margin recompute mid-drag, the same arithmetic the engine runs on every edit. No apply button, no “recalculate.” The design is the number.
FIG. 03 — The physics
Real FEA, with
its homework shown.
Punch-outs break arms at the root, so that's where we look. Stress fields on the printed geometry, a safety factor against your material's real yield — and the assumptions pinned right next to the PASS, where they belong.
ASSUMPTIONS SHIP WITH THE VERDICT.
FIG. 04 — The envelope
Know your hover
before you print.
Thrust curves from bench data, current draw against your battery's C-rating, flight time with a discharge floor you set. The envelope is computed while you design — not discovered in a field.
Numbers, not vibes.
Every figure on this page is the engine’s own arithmetic — mass from the parts registry, thrust from bench data, stress from FEA. If we can’t compute it, we don’t print it.
Assumptions on the table.
A verdict without its assumptions is a vibe with a font. Material, orientation, load case, mesh — they ship attached to every PASS, and they travel with the file.
The line is the design.
249 g isn’t a constraint we squeeze under at the end. It’s the first number in the file — battery included, as the FAA counts it — and every part negotiates with it.
FIG. 07 — The plate
One button.
Then breakfast.
The unibody nests itself on your bed, the AMS manifest matches the materials the FEA assumed, and the job ships to the farm with a revision QR embossed on the arm. Design to hardware, no slicer safari.
FIG. 05 — From the field
Built with Poltergeist.
Flown anyway.
Unibody frames off home printers, checked by the engine, carried into weather the renderings never promised. Every arm wears the QR of the exact revision that shaped it.
FIG. 06 — The loop
Sketch at dinner.
Fly before work.
Drag a wheelbase. The mass ledger re-totals mid-drag.
FEA on the printed geometry, assumptions attached.
Thrust, hover and flight time against your battery.
One button to the farm. The arm wears its revision QR.