Comments by "C S ~ \x5bDuke of Ramble\x5d" (@DUKE_of_RAMBLE) on "" video.
-
14
-
5
-
1
-
 @simongeard4824 That's a good point!
So I looked into it and it appears that even when undamaged, the Mtip speed is only "0.62 Mach" @ 2600RPM, according to NASA Ames Research Center PDF on Ingenuity.
I'm assuming that is in reference to Mars' atmospheric density, not Earth's, since this was testing the lift capability of the rotor design, and they even went so far as to remove components in order to simulate the weight difference of ingenuity on Mars. (so it seems logical to assume they would be similarly stimulating it's atmosphere to determine lift characteristics)
Since I've seen that Ginny's specs are actually 2700RPM, I'm going to assume the other number I came across of "<0.7 Mach", is probably closer to reality. (the Source link on wiki for that number unfortunately seems to be incorrectly entered)
As such, given Ginny is missing upwards of 25% of her blades, that tip speed is going to be significantly lower. (I lack the math skills to calculate it; undamaged length is 1.21m, Mars speed of sound is 240m/s)
Similarly, it's rotor weight will be less, so the motor should, technically, be able to spin them faster.
But yes, catastrophic failure of them is expected, whether it'd occur at first or fifth attempt, it's unavoidable.
So unless there are plans for it to sit there until humans can recover it for inclusion into a museum, which I'm completely onboard with if that's the case, but if not then I say go for broke and gain a final bit of meaningful science. Even if it's able to achieve just a few inches of altitude, that's very useful data to have if you ask me! (not that I'm qualified to make such a claim lol)
And it's not like Ginny can sit there, doing science whilst Percy continues it's mission, given that Ginny is reliant on Percy's uplink connection. So in order for her to do stationary observations, Percy would have to put off it's own mission in order to remain in close proximity...
That's my just 2¢.
1