5 ms·
From 10% to 35% is a 25% improvement, you're still at 35%... From 70 to 95% is a 25% improvement, but it's a lot more. Going from 98 to 99% is only 1% but also
by grogenaut 4y ago
From 10% to 35% is a 25% improvement, you're still at 35%... From 70 to 95% is a 25% improvement, but it's a lot more. Going from 98 to 99% is only 1% but also like really a 10x improvment.
Rockets are operating at pretty decent efficiency, 25% improvment on an internal combusion engine would be mind blowing and make EVs way less interetsting.
There are theoretical maximum efficencies for various types of engines due to thermodynamics. You always lose energy to heat. Entropy is a b**.
- Lichtso 4y agoTechnically, from 10% of something to 35% of something is a 350% improvement or a 25 percent point improvement. https://en.wikipedia.org/wiki/Percentage_point https://en.wikipedia.org/wiki/Percentage_point
- dotancohen 4y agoActually, from 10% of something to 35% of something is a 250% improvement. You already had the first 10%.
- grogenaut 4y agoyes but people often conflate/confuse that... saying the delta in %'s... not % improvement. I agree with you, I'm attempting to point out how a small % increase is a huge actual improvement. This GP was saying that a 25% improvment in the efficiency of a rocket engine was not much to a layman.