dug20
commented
3 years ago Page 43 of the above source describes a method, using data from Table 2.1 (pg15). I believe the data in the table has to be scaled for different pressures.
I think they used the following thermal resistances:
- One due to convection from exhaust gas (same as for regen cooling I think?)
- Second due to the thermal conductivity of the solid ablator, using thermal conductivities in Table 2.1 (pg 15)
- Third due to engine wall (usually metal, e.g. copper).
- Some kind of conduction away from the wall - possibly black body radiation?
I think the modelled ablator erosion using:
- Table 2.1 on page 15
- Equation (5.1) on page 46
Other notes:
- May be good to model the system as time dependent? (i.e. do a transient analysis)
List of methods for modelling ablative cooling systems.