3D preview of F-4 Phantom Centre Fuselage Skeleton
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Interactive 3D model of F-4 Phantom Centre Fuselage Skeleton

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F-4 Phantom Centre Fuselage Skeleton

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Bounding box
139.0 × 160.0 × 77.0 mm
Engine
Precision B-rep
Parameters
37
Published
September 12, 2026

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The prompt

Modify the existing model. Keep the 5 formers and longitudinal stringers. Change the fuselage cross-section from oval/cylindrical to an F-4 Phantom II centre fuselage shape. Make the lower fuselage wider and flatter, with straighter vertical sides and a flatter underside. Narrow the upper fuselage slightly. Add two large rectangular wing spar beams passing horizontally through the centre section. Keep the structure open with no outer skin. Do not add wings yet.

Parameters

NameValueRange
Fuselage Length135 mm60 – 260
Max Width (lower)90 mm40 – 170
Overall Height75 mm40 – 150
Upper Deck Width64 mm30 – 130
Lower Corner Chamfer8 mm0 – 20
Upper Corner Chamfer8 mm0 – 20
Top of Straight Side0 mm-20 – 24
Former Count5 pcs2 – 12
Former Thickness2 mm1.5 – 6
Structural Rim Width3 mm1.8 – 10
Stringer Size (square)2.5 mm1.8 – 6
Stringer Count8 pcs3 – 16
Top Spine Width4 mm2 – 14
Top Spine Height3 mm1.8 – 12
Wing Spar Beam Width (chord)6 mm2 – 20
Wing Spar Beam Height10 mm2 – 30
Wing Spar Beam Extension / side25 mm5 – 90
Beam 1 Station (X)48 mm5 – 130
Beam 1 Height (Z)10 mm-35 – 35
Beam 2 Station (X)62 mm5 – 130
Beam 2 Height (Z)-26 mm-35 – 35
Main Wing Spar Width4 mm1.8 – 16
Main Wing Spar Height8 mm1.8 – 22
Main Spar Extension / side35 mm5 – 100
Main Spar Station (X)30 mm5 – 130
Main Spar Height (Z)-33 mm-35 – 35
Rear Spar Width3 mm1.8 – 16
Rear Spar Height6 mm1.8 – 22
Rear Spar Extension / side25 mm5 – 100
Rear Spar Station (X)100 mm5 – 130
Rear Spar Height (Z)-33 mm-35 – 35
Engine Bore Diameter24 mm8 – 60
Engine Bore Offset (Y)18 mm0 – 45
Engine Bore Offset (Z)-8 mm-35 – 35
Join Pin Diameter4 mm2 – 10
Join Pin Length4 mm2 – 15
Join Pin Count3 pcs1 – 6

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.

F-4 Phantom Centre Fuselage Skeleton - Free CAD Model (STEP, STL) | TextoCAD