# Tag Info

## New answers tagged rocket-science

### How will change mass of fuel in rocket, if payload is doubled

This can be calculated with Ziolkovskys rocket equation: $\Delta v = v_g * \ln{\frac{m_0}{m}}$. Since $\Delta v$ and $v_g$ is equal for both rockets, you can create an equation like this: \ln{\frac{...

### Earth to Low Earth Orbit (LEO), gravity drag and potential energy

I suspect what is missing is the free velocity gained by launching in the same direction as the rotation of the Earth. The closer you are to the Equator, the more "free velocity" you can get ...