Question on delta-v and escape velocity?

AI Thread Summary
Escape velocity, such as Earth's 11.2 km/s, is not directly equivalent to delta-v for calculating mass ratios in the ideal rocket equation, especially for missions beyond low Earth orbit (LEO). While escape velocity is a critical factor, delta-v calculations must consider additional mission parameters, including gravitational influences and orbital mechanics. For trips to the Moon and Mars, delta-v requirements will exceed escape velocity due to these complexities. When calculating nozzle exit velocity, it is necessary to consider the combined thrust of the main engine and any boosters. Understanding these distinctions is crucial for accurate mission planning and rocket design.
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I apologise if this isn't the right place to post this.

If I was to calculate the escape velocity of a body, e.g. the Earth which is approx. 11.2km/s, could this then be used as the delta-v in the ideal rocket equation to calculate the mass ratio needed?

This would be for both a trip to the moon and to Mars so it's not just LEO. That's why I presume the escape velocity is the delta-v in this case?

Also, If this was so and I could use it, for the equivalent nozzle exit velocity, would I have to add up the main engine and any boosters?

Thanks in advance
 
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To derive the escape velocity of any object, remember to apply the law of conservation of energy.On your latter part of the post , I am not sure of the ideal rocket equation.
 

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