wrote in message
oups.com...

Jay Beckman wrote:
I believe the add-on 172 you are trying to think of is this one from
Flight 1
http://www.flight1.com/products.asp?product=esd172

Thanks for that, but I finally recalled the one I was thinking of: the
"RealAir 172SP". It can do slips and spins, and felt pretty realistic
compared to the stock one.

Rob Young and his team at Realair have done some wonderful work with slip
realism in MSFS.
It took some fancy programming too from what I understand.
Using pedals, the sim pilot is afforded a much closer accuracy factor toward
the aerodynamics involved in an actual slip, but there are aspects of the
equation that are extremely difficult to program into a simulation. For
example, the rate of sink due to drag in a slip will vary a great deal from
airplane to airplane at various angles of attack and amounts of applied
opposite rudder to negate the turn. Its a VERY complicated formula.
Mild slips have been possible using the default aircraft in the sim using
rudder pedals but the tendency to turn into the low wing has always been
there and becomes prevalent if the low wing is banked past a very low angle
of bank. In other words, using defaults, the bank angle overcomes the
adverse rudder required to create the slip by negating the offset lift
vector.
Realair, with some absolutely magnificent programming, managed to improve
the aerodynamics required for slips in their add on aircraft. I can attest
to the fact that their Spitfire for one, handles in a slip in the sim
exactly like its real counterpart, as does the 260. I haven't tested the
172, but I'm willing to bet the house its as accurate as the others.
Dudley Henriques
MVP/Flight Simulator