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Icing and ASA

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Is there anyway to model aircraft induction/structural icing through ASA? I have been trying to find some good conditions (visible moisture, tempurature below freezing), have my ASA icing sliders at their min and max cloud icing positions, but still haven't seen any of the effects. Anybody know any good settings? I've experimented with REX-2004 and was able to get some good icing flying in the alps.

Brendan R, KDXR PHNL KJFK

Type rated: SF34 / DH8 (Q400) / DC9 717 MD-88/ B767 (CFI/II/MEI/ATP)

Majestic Software Q400 Beta Team / Pilot Consultant / Twitter @violinvelocity

Hi,ASA should model effects of icing. I know ASv6.5 does. You are not going to see the actual buildup of ice, but the flying characteristics should show up. Are you using FS2004 or FSX? I read 2004, but still wonder.Thanks,

  • Author
Hi,ASA should model effects of icing. I know ASv6.5 does. You are not going to see the actual buildup of ice, but the flying characteristics should show up. Are you using FS2004 or FSX? I read 2004, but still wonder.Thanks,
Thanks for getting back Jim. Yes, this is in FS2004. I just returned from work and have downloaded AFSD (a program that measures "ice weight," drag, prop efficiency, as well as other parameters) as well as Charles Owen's ice gauge/simulator from avsim. I am switiching ASA's icing options, both MIN and MAX to 100%, as well as disabling whatever control FSUIPC has on icing. I'm going to do a testflight from KDSM to KIRK (which is showing freezing rain) and see how I fare. I'll post my results here.

Brendan R, KDXR PHNL KJFK

Type rated: SF34 / DH8 (Q400) / DC9 717 MD-88/ B767 (CFI/II/MEI/ATP)

Majestic Software Q400 Beta Team / Pilot Consultant / Twitter @violinvelocity

  • Author

I was able to get some ice using ASA. In a test flight between KDSM and KDLL:KDSM 090222Z 04018G23KT 2SM -SN BR BKN009 OVC015 M03/M05 A2937 RMK AO2 PK WND 04026/0203 P0001KDLL 090214Z AUTO 06011KT 1/4SM SN OVC004 M02/M02 A2956 RMK AO2 P0001 T10161020I had to edit the settings in FSUIPC though:Maxice=-4Minice=-4(this setting just blanks out the option so it won't be used. ASA now has full control over the icing)In ASA, I set Min icing to %90 and max icing to %100...Just a note though, ASA seems to default the min icing to %20 on restart, despite what I enter in for a value.

Brendan R, KDXR PHNL KJFK

Type rated: SF34 / DH8 (Q400) / DC9 717 MD-88/ B767 (CFI/II/MEI/ATP)

Majestic Software Q400 Beta Team / Pilot Consultant / Twitter @violinvelocity

Hi,Did you save you ASA settings by clicking on Save and Apply?

  • Author
Hi,Did you save you ASA settings by clicking on Save and Apply?
Yeah, the slider is still at the 100% position where it was saved, but the value is shown as "20%." (screenshot)

Brendan R, KDXR PHNL KJFK

Type rated: SF34 / DH8 (Q400) / DC9 717 MD-88/ B767 (CFI/II/MEI/ATP)

Majestic Software Q400 Beta Team / Pilot Consultant / Twitter @violinvelocity

To The OP,Are you running B433 or higher of ASA? I just checked my slider and when I moved the slider my %age also changed to the proper value.To Art,Its the relative strength of the icing and turbulence.Thanks,

  • Author
To The OP,Are you running B433 or higher of ASA? I just checked my slider and when I moved the slider my %age also changed to the proper value.To Art,Its the relative strength of the icing and turbulence.Thanks,
I'm pretty sure I have B433 (can't get the program to start because the computer that FS9 is on is not with me now, asa.dll is 11.0.0.433). I have no problem setting the icing slider to 100% in the options, but after I save and restart, it will somehow revert to 20%. Not a problem though. After some testing with flights in conditions produced by the weather system that just swept across the US yesterday/today, I am getting the icing results I was looking for, especially after modifying the fsuipc.ini file to be Maxice=4, Minice=3 or 2, with the ASA icing options both set at 100%. The ice accumulated at a rate of 3-4 units per minute, with prop efficiency decreasing also around 3-5% per minute (tested in the Dreamfleet Archer III). I'm still going to do some tweaking to see if I can get more of a moderate accumulation, I'm not sure weather it is better to use the sliders in ASA or use the FSUIPC inputs for Minice/Maxice. Certainly I'm finding that the effects are a lot less severe than with the REX weather engine, which renders the airplane unflyable within 5-10 minutes."Realistic" is pretty much a subjective term with icing. In real life I've flown in quite a bit of icing conditions and sometimes never ever saw anything accreting on the boots, sometimes you'd pick up quite a bit for a short period of time. Tonight I flew from EWR-PWM in the tail end of the noreaster that swept through, and although we did get some ice, it was a lot less than expected, just some accretion as we descended through the cloud tops into the thick of it.

Brendan R, KDXR PHNL KJFK

Type rated: SF34 / DH8 (Q400) / DC9 717 MD-88/ B767 (CFI/II/MEI/ATP)

Majestic Software Q400 Beta Team / Pilot Consultant / Twitter @violinvelocity

Hi,What operating system are you using?

Just fly the excellent Maddog, or one of the PMDG aircraft and you will get icing effects regardless of whether they are actually there, and regardless of whether you have anti icing running :( Icing has always been a problem with FS9..... There is a new thread on the Maddog forum discussing why the pitot tubes always ice up regardless of pitot heating. I think this is only in FS9.The only way to solve this is to dissable all icing in ASA and FSUIPC.As you were trying to get the opposite effect, just run one of the aforementioned aircraft in FS9, and you will soon find it shouting STALL STALL at you as the airspeed indicator goes to 0 :(

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Just fly the excellent Maddog, or one of the PMDG aircraft and you will get icing effects regardless of whether they are actually there, and regardless of whether you have anti icing running :( Icing has always been a problem with FS9..... There is a new thread on the Maddog forum discussing why the pitot tubes always ice up regardless of pitot heating. I think this is only in FS9.The only way to solve this is to dissable all icing in ASA and FSUIPC.As you were trying to get the opposite effect, just run one of the aforementioned aircraft in FS9, and you will soon find it shouting STALL STALL at you as the airspeed indicator goes to 0 :(
I have always had to disable icing for this very reason, although I don't recall it ever affecting the performance of the aircraft. Almost as if the IAS drops to zero, but the AP logic still registers the proper speed. Interestingly, I was flying in one of the Dreamfleet GAs a month or so ago with icing disabled in FSUIPC and ASA, but I encountered an area where ice was predicted and temps were within the range for icing. Sure enough, my IAS dropped to zero for about 30 seconds. I wasn't happy even though it didn't do anything to the plane during my climb on AP.And yes, pitot heat and anti-ice on most add ons won't prevent this problem either.

- Chris

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  • Author
Hi,What operating system are you using?
Windows XP with SP3 installed. Its no problem to reset the slider each time- the slider itself never moves from the last saved position; the numerical display however defaults back to 20% on every restart, even though the orange slider-ball stays in the same place. As soon as I move it slightly the number jumps to whatever the ball is at.

Brendan R, KDXR PHNL KJFK

Type rated: SF34 / DH8 (Q400) / DC9 717 MD-88/ B767 (CFI/II/MEI/ATP)

Majestic Software Q400 Beta Team / Pilot Consultant / Twitter @violinvelocity

Hi,Do you click on the Save and Apply Icon after moving the slider?Thanks,

  • Author
Hi,Do you click on the Save and Apply Icon after moving the slider?Thanks,
Yes.Here are the steps I took to recreate the "bug" (if it is even one worth attention. It could be just a display issue from the program on my end.)1. Start ASA, allow first weather to process through to depiction in FS92. Go to Options, cloud options, and select the slider for Minimum Icing and Maximum icing to 90% and 100%, respectively.3. Click Save and Apply4. Wait several minutes for weather to refresh5. Close ASA and restart6. View the cloud options once again... and the ball-slider is where I left it previously, but the number is different. Again, it could be just an error and the ball is correct for the setting, but I just want to make sure. Here is a picture of what it looks like:

Brendan R, KDXR PHNL KJFK

Type rated: SF34 / DH8 (Q400) / DC9 717 MD-88/ B767 (CFI/II/MEI/ATP)

Majestic Software Q400 Beta Team / Pilot Consultant / Twitter @violinvelocity

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