Shape of Big Rockets

TL;DR

This paper argues that large chemical rockets designed for planetary launch cannot be tall and slim but must be short and wide, challenging common assumptions about rocket design.

Contribution

It introduces a geometric constraint showing that big rockets must be short and fat, providing a new perspective on rocket shape design.

Findings

Large rockets cannot be tall and slim due to geometric constraints.

The optimal shape for big rockets is short and wide.

This insight impacts future rocket design considerations.

Abstract

Recent publications discuss the size of chemical rockets for long-distance travel, to be launched from a planet. Here I point out that such a rocket cannot be tall and slim but will be short and fat.