Heat Transfer Revisited – BRR

Carl from Brittish Reaction Research has posted a new update on his rocket engine project and is looking for some guidance on his heat transfer calculations.

This post is going to deal with some tentative calculations on the quantity of heat transferred through the walls of a rocket nozzle I am building. This study is part of my ongoing engine project. To be more specific, I’m interested in finding out how much coolant flow will be required to safely absorb the heat generated by the combustion gases.

Carl runs through the series of calculations required in detail which can be found here, worth a read, it is really easy to follow and if you can help him out, do so!

If you have got this far, thank you for staying with it. Perhaps now you would allow me one last indulgence and tell me if you think I have got it somewhere near right!

Help out a fellow amateur rocket engineer!

2 thoughts on “Heat Transfer Revisited – BRR

  1. Hi Carl,

    Thanks for the reply, I have not yet had a chance to properly check it all but at a first glance, it looks all good!
    I’ll sit down and pull my books out sometime!

    I have been writing a MATLAB code that iterates through to tell you the number of cooling channels required based on materials, fuel etc. but still a work in progress…….


  2. Hi Iain,

    I’m very glad you found it easy to follow. That was my intention all along.

    So far I’ve had no one tell me I’m right but no one has told me I’m wrong either! So that counts as a win…

    I’m going to post more soon on the chamber heat calculations.

    Thanks again,


    Liked by 1 person


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