Rocket Equation
Ideal burn picture
The existing burn view compares wet and dry vehicle mass while propellant exhaust produces the ideal velocity gain.
Before burn
10,000 kg wet
Vehicle plus propellant at ignition.
Expelled propellant
5,000 kg
Exhaust leaves backward at 2,942 m/s.
After burn
5,000 kg dry
Remaining vehicle has gained 2.039 km/s ideal delta-v.
Propellant fraction
50.0%
share of wet mass thrown backward
Exhaust velocity
2,942 m/s
from 300.0 s Isp
Log term
0.693
natural log of wet-to-dry mass
Delta-v
2.0392 km/s
2,039.24 m/s
Mass ratio
2.000:1
50.00% propellant
Propellant mass
5,000.00 kg
5,000.00 kg final mass
Exhaust velocity
2,942.00 m/s
Isp 300.0 s
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