Siemens electric air plane engine, how does it stack up to Tesla engines?
1–10 of 21 posts
Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#2Why are we comparing motors to whole vehicles?
Plus the tesla motor isn't flight rated
Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#3Surely the problem is not the engine weight but the battery weight.
Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#4Why is this article posted? None of the numbers make sense. Tesla weight 32kg, Tesla Roster [sic] 1235 kg.
Well then...
Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#5Surely the problem is not the engine weight but the battery weight.
You could do with mimnimum battery ans send energy to the plane with laser maybe ?
Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#6The "BMW 7 Series" motor weights 2.3t? Or if it's not the motor weight but the car weight, a Tesla weights 32kg?
Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#7Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#8don't forget that the power available to the Tesla motors decreases as the battery is used up. Seems odd, but as usable stored power decreases you are not able to pull as much from the battery anymore.
then there is that whole bugaboo of battery weight.
Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#9The "BMW 7 Series" motor weights 2.3t? Or if it's not the motor weight but the car weight, a Tesla weights 32kg?
Yes, seems like a very misleading or even outright wrong comparison to me as well. Combustion engines are not much heavier than electric engines if you only count the motor block. And if you look at motorbikes (which have probably the most compact engines) their power/weight ratio should be even higher than that of an electric engine.
That said, the limiting factors in terms of power per unit of weight are probably the conductivity of the wires (as the generated heat must be dealt with) and the magnetic force that acts on the motor during its operation (actio=reaction). In a combustion engine it's probably the ability of the cylinder walls to withstand the explosion pressure.
Concerning high power densities, I'd look at electricity generator turbines as well, as they are basically reverse motors and should have a very efficient power to weight ratio (e.g. several MW for a few tons).
Would be great to see a detailed comparison of these factors, which the article does not provide unfortunately.
And, like other people have already pointed out, what really matters in most circumstances is the combined weight of the motor and the energy source. Here, gasoline unfortunately still beats battery-based energy storage by a large factor.
Re: Siemens electric air plane engine, how does it stack up to Tesla engines?
#10Surely the problem is not the engine weight but the battery weight.
Saving weight anywhere on an airplane is a win. The new engine claims to have more power output than other engines of the same weight.