Comment by jacquesm
16 days ago
> and while real world data is hard to exactly predict, getting something outside of the predicted range would generally be interpreted as a sign that your simulation isn't so good
Either that, or your measurements are inaccurate.
or, yasa is moving very quickly,and as they are breaking new ground in power density, the numbers are ridonkulous,completly and utterly insane, 30lb's peak over 1000hp,just having the thing not vaporise itself is an achivement, and so there is no actual way to simulate that, outside of rocket motors, which is kind of where they are at. bet the tire guys are shaking there heads
The point is that at this level, you shouldn't just let some engineers go wild on a physical prototype without simulating it first. You sort of have to simulate it before building the real thing or you're likely to waste a ton of time and money.
If they did simulate this design and it exceeded their expectations so much, either something is wrong with the simulation or some engineer worked some voodoo magic into the very late prototype stages.
Extraordinary claims and all that. Of course you can simulate it. If you are this surprised by the outcome of an experimental setup the first thing you should do is distrust the data. Figure out where the discrepancy is. Fix it, re-run the simulation and the experiment until the two are in agreement. Then publish.
The normal scientific reflex is not to hit the marketing guy and say 'we've got a winner, go write it up'.