PPRuNe Forums - View Single Post - Does take off thrust steadily reduce for fixed N1 during take off roll
Old 15th Jul 2017, 03:44
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john_tullamarine
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The engine thrust output is modelled appropriately for the AFM takeoff data information by the OEM. If the conditions on the day are as input and the piloting technique as prescribed .. then the performance observed will be very close to the model.

Tinkering with RTOW only extends to the question of how accurate we aim to be. If the data is presented by an OEM computer program, it should be considered accurate. If we are dealing with steam driven paper graphs, then there is considerable room for effort in getting the RTOW output closer to the AFM graphs .. just a matter of the time and money considered appropriate to invest in the exercise.

The pain, of course, is getting closer while not ending up being non-conservative with respect to the AFM data.
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