Performance Calculations...
Calculation of performance is one of those things we have to do every day, either using short cuts designed by very clever performance engineers or long hand using a combination of absolute numbers, tables and graphs. The latter always appear to be real bugger's muddles and of questionable parentage. My question is this, how are these long hand tables and charts made? Are they made from absolute numbers obtained from test flights and subsequently turned into formulae or do we get blocks of interpolated numbers derived from these flights which generate numbers which have been "breathed upon"? Or is another method used to generate the charts, graphs and tables we use? Or is this a "how long is a piece of string?" question?
PM