Build your paper rocket visually — real-time stability analysis, mass budget, and Barrowman CP calculation
Live Rocket Visualization
▼
View from nose (looking aft)
Paper body
Packing tape gloss
Electrical tape
Fins
CG center of gravity
CP center of pressure
Body Configuration
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Rocket is rolled around this tube
2
1 wrap4 wraps
11.5"
6"24"
Computed Properties
Inner diameter (fits tube)0.840"
Wall thickness—
Outer diameter—
Paper mass—
Packing tape mass—
Nose Cone
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Paper cone taped on with electrical tape. No cone = great for little kids!
2.0"
2" (short)6" (tall)
1
010
0 g
0 g30 g (scrap paper & tape)
Computed Properties
Nose Cd contribution—
Cone height—
Cone half-angle—
Nose mass (total)—
Fin Configuration
▼
1.8"
0.5"6"
0.5"
0"4"
0.5"
0.1"4"
75°
0°80°
2.0°
0° no spin30° max spin
0.0"
flush with tail11" (near nose)
Computed Properties
Per-fin area—
Per-fin mass—
Total fin mass—
Estimated spin—
Forward Fins (Canards)
▼
1.5"
1.0"
2.0"
near nose tip6"
Canard mass (total)--
Forward fins (canards) shift CP forward, reducing stability margin. Use sparingly - they can make the rocket less stable but more maneuverable. Not recommended for beginners.
Electrical Tape (Balance Weight)
▼
5
110
0%
Front of tubeTail end
Computed
Tape mass added—
Tape position (from front of tube)—
Electrical tape near the front of the body tube shifts CG forward, increasing stability margin.
More wraps = more mass = greater nose-heavy shift. Position is measured along the body tube only (0% = front of tube, regardless of nose cone).
Mass Budget
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Total Rocket Mass
—
In ounces
—
Stability Analysis (Barrowman Method)
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—Center of Gravity from nose
—Center of Pressure from nose
CG (blue) and CP (red) position along rocket length: