Quote:
Originally Posted by SNAFU
Well, manufacturers tend to stick with margins specified and use them, if they have the quality system giving them the ability to mangage the narrow gab. If 500km/h +/-5% on ground level was specified, I would expect the standard plane to leave the shops testified to be able to reach 475km/h, but not one km/h more.
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concerning this: I think it would have been a dangerous policy from an industrial point of view if they aimed at 475 kmh while they guaranteed 500 +/-25 kmh.
We know that during production of the plane (all parts, some coming from suppliers not under quality control of the Bayrische Flugzeugwerke) and the engine (all parts, some coming from suppliers not under quality control of Daimler-Benz) variations occur (that's why each part will have its own specs +/- acceptance margins). When all parts assembled it will lead to a performance that will vary from one plane to another. Now if they had aimed at being at the lower limit they would have ended up with planes that would not have met the specs and therefore increased the number of planes rejected by the customer. This is imho something that someone who wants to run his company profitable wants not to happen.
If one reads the chart by the French one should assume that they could have reached about 480 kmh on deck. At 500m they are at 494 kmh.