Rocket Design
Configure the body, recovery, and engine for your model rocket.Rocket Body
g
g
mm
—
Recovery
in
—
Engine
g
g
s
Thrust Curve · manufacturer data
Launch Site
Set the location, atmospheric conditions, and wind for your launch.Site Location
Click on map or drag pin to set launch site.
°N
°E
m
Atmosphere & Launch Setup
°C
m
° from vertical
° (N)
Direction is a TRUE compass bearing (0°=N, 90°=E, 180°=S, 270°=W).
If your phone Compass shows magnetic north, subtract your local magnetic declination
(≈14° W in Vermont as of 2026) to get the true bearing.
Wind
mph
° (E)
Advanced
(Simulation)
s
mph
°
—
σ values are one-sigma standard deviations: σ=20° means ~68% of
MC samples fall within ±20° of the mean, ~95% within ±40°. Smaller Δt → more accurate but slower
simulation.
Prediction
Run the simulation using your saved Design and Launch Site values.
Design
Launch
Scroll wheel to zoom · drag to pan · double-click to
reset · all three plots stay synced
Altitudevs. s
Velocityvs. s
Accelerationvs. s
Side Viewaltitude vs. horizontal
distance
Boost
Coast
Descent
Plan Viewlooking down · launch at
center · N up
Boost
Coast
Descent (wind drift)
Recovery Zonesatellite view · launch
at center
Launch site
Mean landing
Monte Carlo cloud
90%
confidence
Range
rings
Flight Data
Enter what you measured after the launch from the onboard recorder and field measurements.Read these values from your onboard altimeter and enter them here. Leave blank what you didn't record.
Onboard Recorder
g
s
s
s
s
Recovery Location
Recovery Coords
—
Distance from Launch
—
Run a prediction first to compare
Observations / Issues
Check any that applied to your flight.
Additional Observations
Report
Compare predicted vs. actual, reflect on your results, then submit.
Prediction
Flight Data
| Metric | Predicted | Actual | % Error |
|---|---|---|---|
| Max Altitude | — | — | — |
| Max Velocity | — | — | — |
| Max G | — | — | — |
| Thrust Time | — | — | — |
| Coast to Apogee | — | — | — |
| Ejection from Apogee | — | — | — |
| Ejection Altitude | — | — | — |
| Descent Velocity | — | — | — |
| Flight Duration | — | — | — |
| Recovery Distance | — | — | — |