The British ASI

[Ataros]

S!
I am not an expert but maybe a pitot tube has different design or located differently compared to axis ones? What do experts say on WWII historical forums? We have some here in Russia but I am not a member.

Are you sure the videos show authentic instruments?

If yes, could you post the evidence into bugtracker http://www.il2bugtracker.com/issues/2
and ask mods to change the issue status to "new" or add a new status like "updated". We can discuss it here http://www.il2bugtracker.com/boards/1/topics/15?r=17

[IvanK]

Posted on Bug tracker forum asking for the bug to be reactivated,.... and with the devs directly again !

Shouldn't be closed/Rejected subject on Bug tracker imo it should still be open.

Yes these Aircraft are faithful restorations using original components.

The 109 Pitot probe is in a similar location to the Spitfire under the outboard portion of the port wing, and yet it does not exhibit the same (bugged imo) behaviour as the RAF types.

[Osprey]

A bug tracker is fantastic as long as there is control - perhaps a few people here who have permission to raise and comment on defects. The last thing we want are biased statpadders to spoil the game in their favour.

[bolox]

IvanK, thank you very much for your input, agrees totally with my limited experience of flying relevant types (Chipmunk and Harvard).

The last thing i wish to do is cause a 'war' over this (or any other issue) and further overload Ilya and the team, however at the very least it is inconsistent with the behaviour of other nations asi's.

anyway for those who want to know a little more how pitot systems work and their errors maybe of interest
http://www.nar-associates.com/techni...ide_screen.pdf
or for the more technical
http://ntrs.nasa.gov/archive/nasa/ca...1993092348.pdf

[Ataros]

Reopened the issue.

[bolox]

some 'evidence'


taken from (fig
http://jsbsim.sourceforge.net/spit_flying.pdf

note it is for a Va but it is a fully instrumented test.
a quick try at replicating these conditions ingame ( SpitIIa 210 IAS trimmed level flight, 2650rpm estimated 2G pull) gives a drop in IAS to ~165mph and ~200 on release. To me that is a huge difference- infact the chart shows a very slight increase in IAS at pull

The graphs of timed 180 turn also fail to show any noticeable corellation between sideslip and IAS, certainly not the ~30mph difference experienced ingame.

Is this sufficient proof to put to Luthier? or are there any errors that anyone can spot that need to be addressed?

[IvanK]

Thanks for reopening the Bug on the tracker site Ataros

Good reference there BOLOX.