Very good numbers, but where it from?
The reason of my question is follows: my company started a campania against short overspeeds during CONF1 retraction a couple of years ego . So now retraction at speed higher then S+10 is considered as crime even in turbulance. Thus, situation when you can hit VLS is often as S speed is lower then VLS in CLEAN (1.23 against 1.2 Vs1g). My solution always was pushing VS 0 (it is fast, reliable way with AP ON) But now new campania is sterted. At this time against using VS mode (some pilots use it not in appropriate manner, what lead to speed loss or increasing towards VMAX). Our chif pilots offer use thrust up to TOGA in this case. But when i test this technic i notice that speed trand increases for a couple of seconds, but then FD bar goes higher, what leads to increasing VS up to 50% but speed trand returns to previous. Speed rate almost the same. And it looks like in some cases this technic could be unreliable to prevent speed decay lower then VLS.
That's why i am looking for help to justify it with documents.