On: Autophage rocket engine consumes plastic fuselage ...

[userbinator]

I see you've bought into the whole "plastics = bad" trend, but not all plastics are the same.

Pure HDPE is just H and C, basically like candle wax with a much higher molecular weight. Products of combustion are H2O and CO2.

Chlorinated and fluorinated plastics are the ones that produce lots of toxic emissions when burned.