3 ms·

> I have to wonder if the compressor is basically an ablative heat shield As an aerospace engineer, this is cringeworthy. How exactly would this compressor fun

• voltagex_ 12y ago
  What's the correct terminology? What do you think the major tradeoff in this cheap (?) engine is?
• stcredzero 12y ago
  While the misnomer is cringeworthy, I also find it disappointing that you didn't extrapolate that he was wondering if parts of the engine ablate quickly. While the sample size is too small to be conclusive, it suggests that you are prioritizing zinging him over having a discussion. Could weight be saved in a jet engine by making parts of it ablative? I should think this would play havoc with clearances, so it would only be applicable to parts where the exact dimensions aren't too critical, which I suspect would preclude everything near the compressor and turbine. Also, ablative heat shielding wouldn't apply to anything not exposed to high heat, so this would only apply to the combustion chamber and everything downstream of that. EDIT: This makes me curious about the pressures in jet engines. They range from ~pi for early WWII engines (Junkers Jumo 004) to almost 40:1 for modern ones! According to pv=nrt, modern jet engine compressors can get pretty hot, apparently. (Disclaimer, I am not an engineer!)