Aerodynamic Vehicle Shell

Generate a parametric aerodynamic vehicle shell (outer surface only, body of revolution style), units mm, X=longitudinal from nose(0) to tail, Y=lateral, Z=vertical. Dimensions: total length 3000, fineness ratio 4.2 (length/max diameter), max cross-section 700 height x 550 width (elliptical, not circular), max overall height 800, max overall width 550. Profile: nose tip at X=0 with radius ~1.5% L, smooth elliptical/parabolic nose expansion from 0-15% L, max thickness station at 40-45% L (use 42.5%, pushed aft of center for laminar flow, do not default to 25-30%), near-constant cross-section 25-55% L (cockpit zone), tail taper starts at 50% L with max 12-15° included half-angle, tail terminus 95-100% L as full rounded point (teardrop close) — flag as separate output if truncated/flat cutoff (boat-tail) requested instead. Cross-section: elliptical at every station, width:height ratio ~1:1.27 (550:700) at max station, scale smoothly station to station, no abrupt aspect changes, surface must be C2 continuous (no facets/tangent breaks). Internal clearance to respect (not modeled as solid): 500mm shoulder width, 400mm cockpit height, centered X=30-50% L — outer surface must not pinch inside these. Output: single continuous NURBS lofted surface, export STEP/IGES, include station table (X, width, height) every 5% L (21 stations). No wheels, canopy cutouts, hardware, or extra features — surface only. Flag any conflict with known competition rulebook envelope limits.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.