The A2A Simulations Community

Hi A2A,

Made a test flight with the P-40 after applying the core update 1.3.1. The Mustang has no issue with coolant levels, so I think the update worked as it should.
Of course all of my Accusim planes are now brand new, but that's another story....

Started cold and dark, and kept the cockpit ventilation closed. Took off from Bowerman with 60 gallons fuel for a direct climb to 24.000 feet. I had to switch my oxygen ON shortly after 20.000, the head of hte pilot was starting to move I stayed at 24.000 feet for one-two minutes (took me several minutes to climb, though). Carburator temp was something like -16°C... and -23 with Carb Heat ON ??? Carb Heat is now a Carb freezer ?

Anyways, I made a dive down to sea level, where the external temperature was around 10°C or so. I didn't get any cockpit fog for the whole flight. Is that normal ? Before the core update, any time I would forget the cockpit ventilation, I would get some fog in the cockpit during the climb, and each dive would result in semi-opaque windows, even with the ventilation, forcing me to open the canopy for a while. Now after 1.3.1, no fog at all....

Daube, we'll test this. Thanks for the report. Added.

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A2A Simulations Inc.

I made a second test flight. Still from Bowerman, but this time I downloaded the FSX real weather for today. There were a lot of clouds.
The fog appeared successfully during the climb, somewhere around 10.000 feet. The fog dissappeared when I activated the ventilation, as expected. I made a dive immediately and didn't get any fog, but I wasn't flying high and I didn't "stay" there, so this is normal.

Perhaps the module didn't work properly on the very first flight only ? Strange, but at least it seems to work now.

The strange behavior of the carb heat was still there however. When switching from OFF to ON, the temperature jumps (almost 10 additionnal degrees) for just a second then falls down LOWER than the previous temps. When switching from ON to OFF, there is a temperature jump again, and the temperature returns to the level where it was before the test. This was during the climb, high RPM (not far from red line), high MP (not far from red line), 170-180 knots.

Or the climate wasn't moist enough on the first flight. The update mentions the amount of moisture breathing creates has been reduced. Breathing might become an issue only if ambient air is already moist, when combining both moistures goes above critical threshold and fogging occurs. Also, even when ventilation is shut, the cockpit will leak some air, otherwise you would suffocate if you sat in a closed cockpit, with ventilation shut (and if you didn't put oxygen mask on). When the plane moves, it will leak more than when staying stationary. Ventilation just increases the amount of airflow.



Scott answered it'll be fixed in the next update.


There's also a problem with misplaced CAT gauge sensor: it measures temperature somewhere downstream from venturi, thus displays lower than ambient temperatures on ground. (It can show higher than ambient temperatures in flight. Dunno if it's ram air effect heating up the air, or if it's just related to the carb heat bug. Anyway two different bugs, confirmed and pinpointed. Shouldn't take long for the dev team to fix them.

The performance differences many have been reporting is a trickier one since it has to be decided if it's just a more accurate modeling or a bug. All we know for now is that 1.31 accusim gives noticeably more punch with partial throttle... but it could also be something that is desired. Seems like it's going to be an update with numerous easy bug fixes, and possibly one bigger fix (unless it's ruled as more accurate than original, and not actually a bug - it's a good thing A2A has experienced pilots test flying these birds).

Thanks for these informations.
Indeed the performance of the P-40 is now different. A simple example is that it will not stay still on the ground even if the engine is just at 800 RPM. And 1.000 RPM is already too much for taxying.
I will wait for the next update then