Aces High Bulletin Board

Help and Support Forums => Aces High Bug Reports => Topic started by: 214thCavalier on September 29, 2021, 03:16:30 PM

Title: F4U-4 incorrect fuel burn rates
Post by: 214thCavalier on September 29, 2021, 03:16:30 PM

Hi,

I have noticed in the F4U-4 that there is an issue with fuel burn.
This was with 100% and a DT not that it changes with other fuel loadouts.

Example at Military power.
GPH = 672
Time remaining 33 mins
Range 110.

And on WEP.
GPH = 564
Time remaining 38 mins
Range 140.


So basically on WEP your GPH reduces, your Time remaining and your range increases.

Title: Re: F4U-4 incorrect fuel burn rates
Post by: Lazerr on September 30, 2021, 10:36:08 AM

This happens in the M and or N model p47 also.

Title: Re: F4U-4 incorrect fuel burn rates
Post by: FLS on September 30, 2021, 04:03:45 PM

Quote from: 214thCavalier on September 29, 2021, 03:16:30 PM

Hi,

I have noticed in the F4U-4 that there is an issue with fuel burn.
This was with 100% and a DT not that it changes with other fuel loadouts.

Example at Military power.
GPH = 672
Time remaining 33 mins
Range 110.

And on WEP.
GPH = 564
Time remaining 38 mins
Range 140.


So basically on WEP your GPH reduces, your Time remaining and your range increases.

When the WEP is from a water/alcohol injection that is correct. It's not a problem.

Title: Re: F4U-4 incorrect fuel burn rates
Post by: TryHard on October 05, 2021, 07:57:35 PM

Quote from: FLS on September 30, 2021, 04:03:45 PM

When the WEP is from a water/alcohol injection that is correct. It's not a problem.

When the water/methanol injection correspondingly increases manifold pressure, it is a problem.

If you just injected water/meth with out any increase in boost pressure then the way its modeled in game would be correct. However going from 56" to 72" is a big jump in airflow and thus fuel flow through the engine.

The only piston engine that fuel flow doesn't increase with airflow would be a diesel engine.

Title: Re: F4U-4 incorrect fuel burn rates
Post by: hitech on October 06, 2021, 09:29:29 AM

Quote from: TryHard on October 05, 2021, 07:57:35 PM

When the water/methanol injection correspondingly increases manifold pressure, it is a problem.

If you just injected water/meth with out any increase in boost pressure then the way its modeled in game would be correct. However going from 56" to 72" is a big jump in airflow and thus fuel flow through the engine.

The only piston engine that fuel flow doesn't increase with airflow would be a diesel engine.

It's been a long time since we set the numbers, but I know we looked into this very issue because it also seemed strange to us when we first put the numbers in. If I remember correctly it has to do with being able to run a leaner mixture do to cooling effect of the water.

HiTech