Hi,

I am trying to find some raw guess about energy density of solid propellant to compare it with air breathing engine like turbine. AFAIK, petroleum based fuel can have very high energy density, above 40MJ/kg while propellant is mostly based on explosive which is under 10MJ/kg. But they add binder and other high energy material like aluminum to propellant, so I don’t know in practice, how much energy is propellant

Regards

A bit late response, but I hope this paper helps you out.
http://publications.drdo.gov.in/ojs/index.php/dsj/article/view/327/193