I have been a long-time lurker on the forms but hesitant to join under the advisement of some members of the DCS community. I am posting to report a bug with the F-5 flight model, primarily, in regards to sustained high AOA and instantaneous turn rates. To be brief, the DCS F-5 slows down too rapidly when maneuvering in high AOA pulls or when sustained high AOA maneuvering is required. At 350 to 400 knots the F-5 should be able to maintain a continuous ~4.3-4.8 Gs with a turn radius of ~5000 feet at 5000 feet MSL. (conditions would be 2 Aim 9P5, no wing or cl stores and full fuel at a weight of ~13,500 pounds). This was normal for the F-5E-3 pre Open Beta 2.5.4.28090, however at some point when the textures were broken it feels as if the drag coefficient has increased slightly and could be described as if the aircraft was flying through Jell-O. The Aim-9P5 has also been affected with tacviews from pre 28090 showing the missiles were able to hold their energy better. The difference between Pre 28090 and post 28090 is about a 5% performance decrease in acceleration, climb, level speed and turn performance of both the F-5E-3 and the Aim-9P5. While I don’t expect the DCS F-5 to match the real F-5, I do expect a finished module to remain constant in its performance.
See combat performance section FA8 with turn performance starting at page 410. http://www.avialogs.com/index.php/en/aircraft/usa/northrop/f-5tigerii/t-o-1f-5e-1-f-5e-flight-manual.html#download