Rocket Structural Coefficient Data

 

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Supporting Data

Background

 

NOTE: If you identify any errors, please notify me. I endeavor to make this as correct as possible:

   Ed LeBouthillier

codemonky@earthlink.net

Change Log

Version Date Description
4.6 30 December 2009 Added Isp for each rocket

4.5

22 December 2009

Fixed Duplicate Notation

4.4

21 December 2009

Added Explanations of Field Entries

4.3

3 March 2009

Fixed Scud B (R17) Weights

4.2

3 March 2009

Fixed Atlas E weights

 

Download

Structural Coefficient Table

 

Supporting Data

Atlas E

 

Background

This table started for my own purposes. I wanted some information about comparative rocket construction so I started collecting information and making a spreadsheet. In various discussions, I started referencing some of the information, so I decided I would make it available to people. As such, I had also decided to maintain and version this information so that it might incrementally get better and be more useful to more people.

This might seem like a small project, but finding accurate data is difficult. Sometimes one needs to process and fit the rocket equation to rough approximate data that is available. However, I want to make this accurate and I welcome any corrections that are found.

On the other hand, this document also has a specific purpose for me: to identity a single comparative metric of structural sophistication. Obviously, with anything as complicated as a rocket, this generality may not always be correct. Therefore, I need to make certain presumptions and instill certain biases into how I process the numbers. An example is how to compare payloads to low Earth orbit versus those to geosynchronous orbit. Obviously, it becomes difficult to compare two vehicles if they have very different functionalities. In this particular case, I've tried to narrow my focus only to low-Earth orbit launches. Another example of a difficult issue is the fact that accurate data just isn't available for some vehicles, yet I would like to be able to provide some information on them. In this case, I've collected whatever information is available and attempted to fit the best available data to numerical models.

As this information gets better, hopefully it will allow those interested in rockets to identify interesting rockets and to focus on how their designers might have successfully solved difficult problems of weight and performance.