PNC-55EX — Revision B — ESTIMATED
Source identity: PNC-55EX_PN_71031

This free pack preserves the original STL and STEP geometry from the expanded
Estes Nose Cone Library B. All geometry is in millimeters.

Base diameter: 33.66 mm
Exposed height including features: 85.73 mm (excludes shoulder)
Shoulder: 32.59 mm diameter x 34.92 mm long
Overall X x Y x Z: 33.66 x 33.66 x 120.65 mm
Evidence confidence: medium. This is not a numerical tolerance.

These models use educated estimates, including inferred dimensions and shapes.
They are solid exterior references for CAD editing, not verified replicas or
finished hollow flight parts. No printer clearance, original hollow interiors,
electronics or recovery hardware are included. Solid CAD does not prescribe
100% slicer infill. Digital geometry checks do not validate physical fit, mass,
strength or flight suitability. Check actual tubes and print fit yourself.

Why this shape was chosen:
Source specimen gives a 3.375-inch Exocet nose, 1-inch functional shoulder and total1.375-inch shoulder envelope. Preserve the source main size, include the rear shoulder taper and a subtly blunt tip; exact contour and tip flat are guesses.

Estimated fields:
- Meridian station locations and intermediate radii
- Unmeasured tip/collar details
- Rear shoulder taper terminal diameter; tip flat

See MODEL_RECORD.json for the complete original source record and evidence.
Sources:
https://github.com/dbcook/openrocket-database/blob/master/orc/estes_classic.orc

The retained Apache 2.0 license applies to the OpenRocket source database
where used. It is not a new license for this entire model library.
Independent recreations; no Estes affiliation or manufacturer verification.

Full library, CAD source and original notes:
https://iterarocketry.com/nose-cones
Support: info@iterarocketry.com
