# Bell, mountains and up- / downdrafts

**URL:** <https://forum.flyinside-helis.com/t/bell-mountains-and-up-downdrafts/407>\
**Category:** General Forum\
**Created:** [May 17, 2021, 7:18am UTC](https://forum.flyinside-helis.com/t/bell-mountains-and-up-downdrafts/407 "2021-05-17T07:18:38Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ReaperOne](https://forum.flyinside-helis.com/letter_avatar_proxy/v4/letter/r/838e76/32.png) [@ReaperOne](https://forum.flyinside-helis.com/u/ReaperOne)\
**Post date:** [May 17, 2021, 7:18am UTC](https://forum.flyinside-helis.com/t/bell-mountains-and-up-downdrafts/407/1 "2021-05-17T07:18:38Z")

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Hi folks,

been enjoying the 47 a ton since the day it came out and fly it most of the time. Great work, it’s probably my favourite add-on right now 😃

I noticed something peculiar during mountain flights. It seems like there is no downdraft or updraft effect present along mountainsides. The flight trajectory is influenced by wind but as long as I maintain attitude I also maintain altitude. To test it I did some runs along ridges and mountainsides, from shallow to steep, with wind speeds from 4 to 45 knots. No matter how strong the wind I was never pushed up or down while sticking to cruise flight attitude. Flying straight over ridges did not cause any changes in vertical speed either.

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**Author:** ![flyinside\_dan](https://forum.flyinside-helis.com/user_avatar/forum.flyinside-helis.com/flyinside_dan/32/123_2.png) [@flyinside\_dan](https://forum.flyinside-helis.com/u/flyinside_dan)\
**Post date:** [May 17, 2021, 1:01pm UTC](https://forum.flyinside-helis.com/t/bell-mountains-and-up-downdrafts/407/2 "2021-05-17T13:01:36Z")

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I think we may have a bug here! Does MSFS normally simulate updrafts and downdrafts around mountains?

I’ve added this to our bug list to look into, assuming MSFS has the data, it should be an easy fix on our end.

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**Author:** ![ReaperOne](https://forum.flyinside-helis.com/letter_avatar_proxy/v4/letter/r/838e76/32.png) [@ReaperOne](https://forum.flyinside-helis.com/u/ReaperOne)\
**Post date:** [May 17, 2021, 3:40pm UTC](https://forum.flyinside-helis.com/t/bell-mountains-and-up-downdrafts/407/3 "2021-05-17T15:40:06Z")

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Thank you for the quick reply 😃 good to know, would make this challenging little bird even better.

Yes it does simulate them quite well, had my fair share of near misses when approaching mountain airstrips over sloped terrain due to some violent downdraft along the slope 😆

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**Author:** ![Jetstreamsky](https://forum.flyinside-helis.com/user_avatar/forum.flyinside-helis.com/jetstreamsky/32/189_2.png) [@Jetstreamsky](https://forum.flyinside-helis.com/u/Jetstreamsky)\
**Post date:** [May 17, 2021, 3:59pm UTC](https://forum.flyinside-helis.com/t/bell-mountains-and-up-downdrafts/407/4 "2021-05-17T15:59:59Z")

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Yes flow over mountains is there thankfully, it makes ridge soaring possible 🙂

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**Author:** ![ReaperOne](https://forum.flyinside-helis.com/letter_avatar_proxy/v4/letter/r/838e76/32.png) [@ReaperOne](https://forum.flyinside-helis.com/u/ReaperOne)\
**Post date:** [May 27, 2021, 1:43am UTC](https://forum.flyinside-helis.com/t/bell-mountains-and-up-downdrafts/407/5 "2021-05-27T01:43:35Z")

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Just saw the update on your Road Map, you guys are amazing! 😃  
Keep rocking with this brilliant add-on! 🍻

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**Author:** ![Mako](https://forum.flyinside-helis.com/user_avatar/forum.flyinside-helis.com/mako/32/387_2.png) [@Mako](https://forum.flyinside-helis.com/u/Mako)\
**Post date:** [June 3, 2021, 2:57pm UTC](https://forum.flyinside-helis.com/t/bell-mountains-and-up-downdrafts/407/6 "2021-06-03T14:57:58Z")

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[Thank for this epic feel and “2nd life to FS” update !](https://www.youtube.com/watch?v=9aBDvlU4uAk)