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3eb7988a1663yesterday at 11:57 PM1 replyview on HN

Efficiency was mentioned a few times, but without any hard numbers. What was the state of the art efficiency over time from a 1940s design to today? Have improvements plateaued or is there still a lot of theoretical gains on the table?


Replies

icegreentea2today at 1:04 AM

This might be interesting: https://www.nationalacademies.org/read/23490/chapter/6

Thermodynamic efficiency (which is what turbine blades enable) has increased from ~30 to 55% over the last 50-60 years. The book estimates that the practical limit of for thermodynamic efficiency is in the 65-70% range.