Finding Delta V of a Rocket: An Overview

[marco12345a]

I am doing an assignment about launching a rocket and at the moment I am looking for the delta V of the rocket. I have done a few researches and i found a method of finding the energy of the rocket and find the delta vee of it , but then i found this article and I am not sure if it is delta vee or not, and i don't get why there is a 1km/s in the equation

http://windhorst113.asu.edu/launchingtoorbit.pdf

 

[tiny-tim]

welcome to pf!

hi marco12345a! welcome to pf!

∆v is the increase in speed while the main rocket burns

1 km/s must be the speed just before the main rocket starts to burn

(but i don't know where that comes from … it's over twice the Earth's rotation speed )