Take-off weight, performance changed?

[deady1000]

Hey guys, after quite a while I yesterday hopped into the Apache again. I was a bit confused about it's performance. Had really big problems to hover after taking off with my default loadouts presets and even often lost power and crashed at 90-100% collective without doing crazy stuff.

 

My question:

Has there been a major performance decrease or a huge weight correction of the Apache?

It feels pretty "fat" now.

 

My solution was to deplete fuel to 30-40% and only use 2 racks of Hellfires.

100% and 2 racks of Hellfires were already too risky to fly and a full loadout was impossible to handle.

I mean, of course I don't need 100% fuel and 50% are almost always enough but I was just wondering.

 

When I first flew the Apache I did not have these problems.

Whats the recommended takeoff weight?

 

Thanks

Edited October 20, 2022 by deady1000

[Swift.]

So much of a helicopters performance depends on the environmental conditions. What temperature and pressure altitude were you operating at?

[Hiob]

There should be performance charts, regarding altitude and air temperature, in the manual if I'm not mistaken.

 

[deady1000]

1 hour ago, Swift. said:

So much of a helicopters performance depends on the environmental conditions. What temperature and pressure altitude were you operating at?

Through The Inferno Syria, Summer Heat, 7 a.m., near Damascus. I think it should have been no problem. But thank you for the reminder. Did not think about that.

1 hour ago, Hiob said:

There should be performance charts, regarding altitude and air temperature, in the manual if I'm not mistaken.

 

Roger, thanks.

 

----

 

Found it. I think the GWT was just way too high. And manual says per 200 lbs one should decrease fuel quantity by 1%. And GWT can be as high as 19.200 lbs or so. So there are scenarios where - at least if you calculate it - you shall decrease fuel quantity to 4%.

Edited October 20, 2022 by deady1000

[admiki]

Performance page is non functional at this moment, it is being worked on.

[GrEaSeLiTeNiN]

Apart from lower temperatures, it's also better to choose anti-cyclone (higher pressure) over cyclone (lower pressure) in the dynamic weather options if you want more lift, am I right? Thks

[Swift.]

10 hours ago, GrEaSeLiTeNiN said:

Apart from lower temperatures, it's also better to choose anti-cyclone (higher pressure) over cyclone (lower pressure) in the dynamic weather options if you want more lift, am I right? Thks

Lower pressure altitude will reduce required torque, yeah

[GrEaSeLiTeNiN]

Lower pressure altitude will reduce required torque, yeah

It’s more about air density (not within control) than torque (within control). Cold temperatures, lower altitudes and higher pressures all have denser air which aids lift but requires more torque.

[Swift.]

10 minutes ago, GrEaSeLiTeNiN said:

It’s more about air density (not within control) than torque (within control). Cold temperatures, lower altitudes and higher pressures all have denser air which aids lift but requires more torque.

As I said, lower pressure altitude will reduce required torque....

Lower elevation = lower pressure altitude
Higher pressure = lower pressure altitude

Lower pressure altitude = lower density altitude
Lower temperature = lower density altitude

Lower density altitude = less torque required
Lower gross weight = less torque required

QED Lower pressure alt = less torque required