Aircraft performance flight models

I'm developing flight models for an upcoming combat flight simulator
for next year, to say the leaste it will knock the world back a bit as
nothing like this has really been done before. ANY information along the
lines of real world flight envelopes for modern day warplanes (from say F-4
onwards) from around the world would be GREATLY appreciated and likely even
credited if the info was in large quantities and of a usefull quality.
Takoff speeds, landing speeds, distances for TO and landing. If the holy
grail of G charts should become known unto me( I already have one for F-4)
you shall be knighted! (ok not really BUT if I could) Thanks for any
upcoming help. If you have info you can post it here or(preferably to
prevent me from missing it on this server) send direct to me at
with the subject "Flight Envelopes" (even if it isnt
quite to do with the envelope) so it doesnt get spam filtered out. Records
will be kept as to who sent what, and you may choose to be annonymouse if
you wish. Thanks again all :-)