Timeline for Why do piston engines have a lower fuel consumption with higher temperatures?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Jun 7, 2021 at 9:07 | comment | added | RedGlyph | @JanHudec It's an old question so I'm not going to read all that again, I think it was a side comment to the more general consumption issue. I can just say that any manual I've seen provides those tables in function of the airspeed, which makes sense because the important point is fuel consumption when you prepare a flight. | |
| May 25, 2021 at 5:16 | comment | added | Jan Hudec | @RedGlyph, I don't see the question mention same speed. Speed will be lower, but in GA you usually have defined cruise power and the speed is whatever it is. | |
| Nov 26, 2017 at 18:36 | comment | added | RedGlyph | The problem is, those performance tables show that the airspeed is the same while the fuel consumption and the power is lower. This means that the same amount of work is performed in the same time interval, thus the same net power is output by the engine with better energy efficiency (at least at first glance, fuel consumption), while the thermodynamics tells us otherwise. | |
| Jan 14, 2017 at 1:21 | comment | added | Peter Kämpf | maybe you should add that a higher ambient temperature means that the thermodynamic cycle is less efficient. The physics is quite the same as that for turbo machines. So relative to power, fuel consumption even goes up with temperature. | |
| Jan 13, 2017 at 22:25 | history | answered | sweber | CC BY-SA 3.0 |