SkyChimp

12-27-2003, 08:42 PM

I know I'm pi$$ing into the wind here, but here goes:

You have the P-47D-27 ROUGHLY modelled to roll consistently with this roll chart:

http://members.cox.net/rowlandparks/p47roll.jpg

As I've stated (and the chart clearly shows), this chart reflects a 30lb stick input. I've further stated that this should not be interpreted to mean that this was the maximum possible stick input - which it seems you have done. If it were, then this would be the maximum roll velocities obtainable.

But as you know, there exists a roll chart for the P-47C that clearly indicates roll performance with a 50lb stick force. You must then know that 50lbs could be applied in the P-47D-27 as well.

Therefore, I must ask, why do you insist on limiting the P-47D-27 to 30lbs, when the other P-47Ds (as well as every other plane in FB) is modelled to roll consistent to at least 50 lbs stick input?

The P-47D bubble top series had 50lb roll rates equal to that of the razorback series, just at a higher speeds. The top roll velocity of the P-47D-27 should be about 85 degrees per second. Currently, it's much MUCH lower. At 50lbs force, the roll chart would look something like this.

http://members.cox.net/rowlandparks/50lbs.jpg

I have a roll chart for the P-39D-1 that shows

roll rates with a 30lb stick force and a 50lb stick force:

http://members.cox.net/rowlandparks/p39roll.jpg

Aside from showing that you have the P-39 in FB rolling way too fast, it also goes to show that MY roll chart for the P-47D-30 with a 50lb stick force reflects accurately the roll rate increase one should expect with the increase in stick force.

Oleg, many of the planes in FB have HIGHLY suspect roll rates. The Fw-190 still rolls at something like 180 degrees per second at 800 km/h. And most of the Soviets planes can easily equal the Fw-190 in roll at lower speeds - even though none that I know of were reputed to have roll rates competetive to the Fw-190. I'm not asking you to overmodel the P-47D-27 roll rate, but why must getting it at least correct be so hard?

Regards,

SkyChimp

http://members.cox.net/rowlandparks/skychimp.jpg

You have the P-47D-27 ROUGHLY modelled to roll consistently with this roll chart:

http://members.cox.net/rowlandparks/p47roll.jpg

As I've stated (and the chart clearly shows), this chart reflects a 30lb stick input. I've further stated that this should not be interpreted to mean that this was the maximum possible stick input - which it seems you have done. If it were, then this would be the maximum roll velocities obtainable.

But as you know, there exists a roll chart for the P-47C that clearly indicates roll performance with a 50lb stick force. You must then know that 50lbs could be applied in the P-47D-27 as well.

Therefore, I must ask, why do you insist on limiting the P-47D-27 to 30lbs, when the other P-47Ds (as well as every other plane in FB) is modelled to roll consistent to at least 50 lbs stick input?

The P-47D bubble top series had 50lb roll rates equal to that of the razorback series, just at a higher speeds. The top roll velocity of the P-47D-27 should be about 85 degrees per second. Currently, it's much MUCH lower. At 50lbs force, the roll chart would look something like this.

http://members.cox.net/rowlandparks/50lbs.jpg

I have a roll chart for the P-39D-1 that shows

roll rates with a 30lb stick force and a 50lb stick force:

http://members.cox.net/rowlandparks/p39roll.jpg

Aside from showing that you have the P-39 in FB rolling way too fast, it also goes to show that MY roll chart for the P-47D-30 with a 50lb stick force reflects accurately the roll rate increase one should expect with the increase in stick force.

Oleg, many of the planes in FB have HIGHLY suspect roll rates. The Fw-190 still rolls at something like 180 degrees per second at 800 km/h. And most of the Soviets planes can easily equal the Fw-190 in roll at lower speeds - even though none that I know of were reputed to have roll rates competetive to the Fw-190. I'm not asking you to overmodel the P-47D-27 roll rate, but why must getting it at least correct be so hard?

Regards,

SkyChimp

http://members.cox.net/rowlandparks/skychimp.jpg