Aerodynamic heating on rocket fins

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    Heating Rocket
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SUMMARY

The discussion focuses on calculating aerodynamic heating on rocket fins during supersonic flight. The user seeks to determine the heat transfer to the fins, which are angled at approximately 45 degrees, and emphasizes the importance of understanding the heating rate at various flight points. It is established that during supersonic flight, the fins experience sub-sonic flow due to shock waves generated by the nose cone, while the nose cone itself is subjected to supersonic heating. The user is advised that the transonic region should be traversed quickly to minimize heating issues on the fins.

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physwil90
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I am currently constructing a supersonic rocket and am trying to empirically calculate the heat transferred onto all different parts of the missile body to know what materials to buy. However, I do not know how to calculate the heat transferred onto the fins of the rocket as it travels (the fins will be cut at an angle let's say about 45). In order to properly find this I will need to know the heating rate at each point of flight in the rocket. Is there any equation for this concerning missile fins? Any help would be great...
 
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In supersonic flight, fins will be in sub-sonic flow due to the shock produced by the nose. So you only have to worry about supersonic heating on the nose cone.

When punching through transonic, you might have supersonic flows forming around fins, but hopefully, your rocket will punch through transonic region fast enough for it not to be an issue.
 

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