Yesterday, we found that the reaction chain of ETMY quad was rubbing, so Betsy and Travis made some adjustements and a round of TF was ran overnight. The results are now clean, meaning the suspension is free of rubbing for both chains. This will be our official phase 3a set of transfer functions.

The first attachement shows the transfer functions for the 6 DOF of the main chain and the second attachement for the reaction chain. TF have their peaks matching very well with the model, except T DOF of the reaction that has an extra resonance at 0.86Hz which is a roll mode. (and as usual the reaction chain pitch which differs because of added stiffnes from cables which couples into the L DOF).

I added to the plots the phase as well as the ratio between model and measurement.