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THE FEUTEX TOOLKIT

Hohmann Transfer Budget

Estimate two impulsive burns and coast time between coplanar circular orbits.

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01 Your input
02 Your result
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FormulaFirst burn magnitude = abs(sqrt(mu/r1)*(sqrt(2*r2/(r1+r2))-1)); Second burn magnitude = abs(sqrt(mu/r2)*(1-sqrt(2*r1/(r1+r2)))); Transfer coast time = PI*sqrt(((r1+r2)/2)**3/mu)
Sources and model references

Worked example

Inputs

Starting orbital radius
7000 km
Target orbital radius
14000 km
Gravitational parameter
398600.4418 km³/s²

Expected results

First burn magnitude
1.167378507 km/s
Second burn magnitude
0.9791495543 km/s
Transfer coast time
5353.834395 s

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Estimate two impulsive burns and coast time between coplanar circular orbits.
  2. Set starting orbital radius, target orbital radius, gravitational parameter in the indicated units.
  3. Calculate and compare first burn magnitude, second burn magnitude, transfer coast time.

Try this example

{
  "r1": 7000,
  "r2": 14000,
  "mu": 398600.4418
}

Accuracy and scope

Idealized educational model. Enter measured values in the displayed units; real systems may require additional corrections.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.