Ibrahim, Oli
Below are updates and promising findings concerning the most recent BBSS LHO Top Mass -4mm BP Adjustments to tackle the F1 Drift issue summarized in alog 80577.
On Friday 10/11, Oli P and I moved the blade positions (mm BP Units) to:
Front Left: Side: 0.02, Top: -4.03 Back Left: Side: -0.03, Top -3.90 Front Right: Side: 0.02, -3.91 Back Right: Side: -0.05, -3.95 Avg: Side: -0.01 Height: -3.95
Find:
- LHO Transfer Functions PDF
- LHO and LLO different Blade Positions Comparison PDF (essentially the plot from alog 80589 but with the newest 10/11 results).
- LHO BOSEM (Top Mass and PUM) Counts
The good news is that with these 4.5 days of Data, we see no sign of F1 Drift.
We will post another alog with TF to model comparisons as we find which model d1 parameter fits these -4mm BP positions best.
That's good news! What is the configuration for the addable masses on the top mass for both the bottom and top plate?
The Addable Masses on the top plate were redistributed to the Front (top). 150g and 150g as shown in the attached image. No change to the bottom plate. We did not change the total mass.
Adding this Pitch Plot (which still shows no drift!) to give a measure of how much the diurnal moves day-to-day. Plot attached shows a max of 31.8 cts trough to peak max.
This is such that future drift measurements (e.g. at LLO) can try new configurations quickly and measure the prevailing drift without getting caught in the daily pitch breathing error.
