C of G Visualiser

1. Prepare your CSV

Create a spreadsheet with one component per row. The tool needs at minimum three numeric columns for X, Y, Z position. A mass column makes marker sizes proportional to component weight.

Example format

# Comma-separated — headers on row 1, units as you like

Component,Group,X (mm),Y (mm),Z (mm),Mass (kg)

Nose Cone,Airframe,0,0,50,2.1

Main Wing,Airframe,480,0,0,8.4

Engine,Propulsion,310,0,22,15.2

Battery Pack,Electronics,200,0,10,3.8

Landing Gear L,Structure,380,-90,0,1.0

Landing Gear R,Structure,380,90,0,1.0

Avionics Bay,Electronics,150,0,30,1.5

Fuel Tank,Propulsion,260,0,15,6.2

Column rules

X / Y / Z — any numeric unit (mm, m, in). All three required.
Mass — any numeric unit. Used to weight the CoG and scale markers. Optional but recommended.
Label — component name shown in the tooltip and list.
Group — subsystem / assembly. Components in the same group share a colour.
Columns can be in any order — map them after loading.
Common names are auto-detected (X, CG_X, CoG_X, Cx etc.).
Delimiter is auto-detected: comma, semicolon, or tab.

Controls

Left drag — orbit / rotate
Right drag / two-finger drag — pan
Scroll wheel / pinch — zoom
View buttons — snap to Top / Front / Back / Right / Left / Isometric
Ortho toggle (header) — switch between perspective and orthographic projection
Hover a marker to see its name, position, and mass
Component list — check/uncheck individual parts or whole groups; CoG recalculates live

C of G marker

The white sphere with red crosshairs shows the mass-weighted centre of gravity of all visible components. Hide components to analyse sub-assembly CoG.

How to use

1. Prepare your CSV

Example format

Column rules

Controls

C of G marker