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add link to other answer of mine describing reuse of ablative heatshield
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BrendanLuke15
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Maybe not quite what you're after, but slide 85 of NASA's Aerothermodynamics Lecture has this figure:

TPS mass fraction

Of course this requires an estimate of instantaneous heat flux along the entry trajectory (integrated into total heat load). A good value for total heat load for a LEO reentry is ~$10^4$ to $2$x$10^4$ $\frac{J}{cm^2}$ which translates to ~10-15% of the entry vehicles mass as TPS (thermal protection system).

This is of course just a 1st (maybe even 0th) order design estimation tool, and specific to ablative entry systems which are generally not reusablewhich are generally not reusable.

Maybe not quite what you're after, but slide 85 of NASA's Aerothermodynamics Lecture has this figure:

TPS mass fraction

Of course this requires an estimate of instantaneous heat flux along the entry trajectory (integrated into total heat load). A good value for total heat load for a LEO reentry is ~$10^4$ to $2$x$10^4$ $\frac{J}{cm^2}$ which translates to ~10-15% of the entry vehicles mass as TPS (thermal protection system).

This is of course just a 1st (maybe even 0th) order design estimation tool, and specific to ablative entry systems which are generally not reusable.

Maybe not quite what you're after, but slide 85 of NASA's Aerothermodynamics Lecture has this figure:

TPS mass fraction

Of course this requires an estimate of instantaneous heat flux along the entry trajectory (integrated into total heat load). A good value for total heat load for a LEO reentry is ~$10^4$ to $2$x$10^4$ $\frac{J}{cm^2}$ which translates to ~10-15% of the entry vehicles mass as TPS (thermal protection system).

This is of course just a 1st (maybe even 0th) order design estimation tool, and specific to ablative entry systems which are generally not reusable.

Source Link
BrendanLuke15
  • 10.1k
  • 2
  • 27
  • 83

Maybe not quite what you're after, but slide 85 of NASA's Aerothermodynamics Lecture has this figure:

TPS mass fraction

Of course this requires an estimate of instantaneous heat flux along the entry trajectory (integrated into total heat load). A good value for total heat load for a LEO reentry is ~$10^4$ to $2$x$10^4$ $\frac{J}{cm^2}$ which translates to ~10-15% of the entry vehicles mass as TPS (thermal protection system).

This is of course just a 1st (maybe even 0th) order design estimation tool, and specific to ablative entry systems which are generally not reusable.