Originally posted by Ike 2K#
*note that if you reach 500mph in 109 G-10, you get very little or no response to the elevators and ailerons
One of the things that has always baffled me about the flight modeling of this game is the issue of compressibility.
If I'm in a Jug or P-38, I expect to see compressibililty when doing 500 mph at 25k. However, they're still compressing at 2k! Hold the phone, 500 mph at 2k is barely above Mach 0.6, well below the critical mach of any fighter in this game. In other words, the P-47 should not have any issues with compressibility below 10k.
Back in the late 1940s, Curtiss test pilot Herb Fisher performed over one hundred dive tests with a P-47D-30-RE from altitudes up to 30k (testing transonic props). Fisher routinely reached Mach 0.80 and 0.83 on occasion and he never had any trouble getting the big Jug out of the dive. In fact, Fisher stated that at 550 mph (at around 5,000 feet), the P-47 responded well to elevator input, requiring no assistance from trim to exit the dive. I have the test data for 12 of these test dives.
The compression behavior may be a programming concession, but it sure as heck isn't accurate. As a plane descends to warmer air, the speed of sound goes up. Therefore, the effects of compressibility diminish until the aircraft is well below critical Mach.
Adding to the problem are dive recovery flaps that do not perform as they are supposed to. These should induce a pitch-up condition, leading to a 3 G, hands-off pullout. Those on the P-38 and P-47D-30 merely add drag, with no pitch-up whatsover.
My regards,
Widewing