mpav

Turn on carburetor heat? Not sure if the AFE is supposed to handle this but moderately warm and humid conditions (like those in eddl these days) can cause carburetor icing which will restrict the airflow to the engines essentially suffocating/drowning them. The "carb ice suspected" warning is a dead giveaway that you do have ice building up in your carburetor. Martin Peters

Sorry, didn't see your replies before editing my second post. As said there the problem is that reverse pitch and power back only work properly when you use a joystick axis to control your throttle. If you use keys or even drag back the levers with the mouse the pitch logic apparently gets confused and sets the pitch to 0 - with very limited breaking power. I suspect the problem is that the algorithm expects the throttle input to move forward again after you've flipped the switch, while with keys and mouse you move the throttle further back. Martin Peters

What kind of setup do you use for your throttle? I used buttons to throttle up and down to avoid potential axis problems but maybe those were the cause of the problems... Will have to check that later... Edit: The input type seems to be the problem here indeed. With an axis as throttle input reversing works as expected - still that strange double peak thrust though, however the pitch stays negative and thus you can de-accelerate and eventually reverse as expected. One obvious difference is that with buttons as throttle control you need to press "throttle back" to move the levers further back, while you move your joystick axis forward again, which is sort of wrong but I suppose necessary to deal with the hardware limitations. Apparently this confuses the pitch algorithm in that it dials the pitch back to 0 instead of putting it at -13, which reduces breaking power dramatically and makes powering back impossible. I guess if PDMG wants to fix this they need to adjust that logic to account for a button controlled throttle - should I submit a report? Thanks Matthias, for your input - knowing that it worked for you put me on the right track there. Martin Peters

After being unable to power back the DC-6 (it actually would move forwards) I decided to take a look at the datarefs when applying reverse pitch while breaking and this somewhat strange picture developed: As you can see immediately after applying reverse the prop pitch (in red) jumps from +12 to -25 only to drop back quickly to 0. The thrust (green - right axis) follows but has that weird double peak - at first I assumed that it was due to the throttle (yellow) being pushed further back, but it is also present if you do not touch the throttle at all. Shortly after the pitch reaches 0 the reverse thrust diminishes with aircraft speed (blue) and actually provides forwards thrust below 50 knts which explains why you can't power back. Now I don't have experience with a real DC-6 but this really looks weird. Maybe it's x-plane doing something strange with the datarefs but the speed seems to match the other data or maybe it's a bug in how negative pitch values are handled... Should I report this to support? I just want to be able to power back :wub: Martin Peters

Actually you can remove reflections when taking photos: Since reflected light is (mostly) polarized you can use a polarizing filter to remove most of the reflections. Left photo taken with properly adjusted polarizing filter - right photo without a polarizing filter Depending on how the photo was taken, reflections can be dramatically reduced in photos. So I'm afraid photographs can't provide good evidence of reflections or rather a lack thereof. Martin Peters