This is a web site with a list of the NACA reports http://www.cesos.ntnu.no/~kong/links_files/NACA%20Digital%20Library.htm

There are quite a few about WW1. Take a look at them and you'll realize the uncertain nature of airplane design and understanding. This one is interesting http://naca.central.cranfield.ac.uk/report.php?NID=138
I like the parts about testing airplanes. Read page 7 or 8. "Speed was not measured regularly. To accomplish the latter, steady, horizontal flights are a requisite, and even trained pilots cannot always accomplish this accurately."

Based on this report PatWilson is right. Absolute performance quoting is pointless. Get it about right and about right relative to the other planes (probably the most important) and you'll have a successful WW1 sim when it comes to the flight model.


V/R
Hptm. Paul vonSchpam, II./JG1