[NO BUG] Altitude where supercharger switches gear form low to high

[saburo_cz]

Hello,

 

"At an altitude of approximately 3300 +/- 200 meters, the supercharger automatically switches

supercharger speed from low to high." is written in DCS A-8 manual, p.99.

I think it is not correct, according to available reports.

 

I have not found information where exactly has to supercharger switch from low to high.

So, my complain is only based on power charts in available reports.

 

When i fly with engine setting 2700R.P.M, supercharger is switched to high speed from low at approx. altitude 2850m.

And this is most likely correct, according to charts in reports.

 

Unfortunately, when i fly with lower engine setting, this altitude wil change and this seems to be incorrect.

With 2400RPM superchrager switches at altitude approximately 3750m.

With 2300RPM superchrager switches at altitude approximately 4100m.

 

All reports where is chart with plane performance (level speed or climb..) show that altitude where superchergers gears are switched is slightly below 3000m (for all engine settings).

 

I am not saying it has to occur at certain (and only) altitude, but difference between them is not several hundreds of meters.

 

I tried it several times.

 

When i dived, superchager switched back to low gear mostly at around critical altitude for actual power setting, it seems to be incorrect too.

But it required deeper look.

[grafspee]

Hello,

 

"At an altitude of approximately 3300 +/- 200 meters, the supercharger automatically switches

supercharger speed from low to high." is written in DCS A-8 manual, p.99.

I think it is not correct, according to available reports.

 

I have not found information where exactly has to supercharger switch from low to high.

So, my complain is only based on power charts in available reports.

 

When i fly with engine setting 2700R.P.M, supercharger is switched to high speed from low at approx. altitude 2850m.

And this is most likely correct, according to charts in reports.

 

Unfortunately, when i fly with lower engine setting, this altitude wil change and this seems to be incorrect.

With 2400RPM superchrager switches at altitude approximately 3750m.

With 2300RPM superchrager switches at altitude approximately 4100m.

 

All reports where is chart with plane performance (level speed or climb..) show that altitude where superchergers gears are switched is slightly below 3000m (for all engine settings).

 

I am not saying it has to occur at certain (and only) altitude, but difference between them is not several hundreds of meters.

 

I tried it several times.

 

When i dived, superchager switched back to low gear mostly at around critical altitude for actual power setting, it seems to be incorrect too.

But it required deeper look.

 

can you link that power charts ?

evry chart i have seen is for 1.32 or 1.42 ata

[Yo-Yo]

No, it's correct. Exactly how KG changed it.

[saburo_cz]

Then O.K.

i have to trust, even i do not believe.

%5Bimg%5Dhttps%3A//i.imgur.com/79u3iUh.jpg[/img]

 

%5Bimg%5Dhttps%3A//i.imgur.com/D13TyD3.jpg[/img]

Edited June 7, 2019 by saburo_cz
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