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F15-E CFT weight bug?


Go to solution Solved by Boneski,

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Posted

Set Fuel to 9% the game jet show it still weighs more than a Fully Fueled F15C (that cant be right)

Set Fuel to 0% again the F15E game jet shows it weighs as much as a full F15C

Assumptions:

1 this is not a bug and in real life these airframes have substantial weight differences 

2 this is a bug and the game is calculating base weight of the game jet as having Fuel /Gas in

the CFTs and that the game thinks the get is empty (when you play with the game jet (F15E)at 9% you trigger the low fuel warnings.

Maybe someone can confim this.

The weight issues was seen on first release. I have not kept up with DCS to know if there has been a patch

or if the issue still exist. I will try to add some screen shots. If I find the issue is no longer there I will remove this post.

 

Internet infomations shows  F15E at

  • Empty weight: 31,700 lb (14,379 kg)
  • Max takeoff weight: 81,000 lb (36,741 kg)

Internet Informations shows F15C at

  • Empty weight: 28,000 lb (12,701 kg)
  • Max takeoff weight: 68,000 lb (30,844 kg)

 

My mission is to fly, fight, and win. o-:|:-o What I do is sometimes get a tin of soup, heat it up, poach an egg in it, serve that with a pork pie sausage roll.

Posted

Where you able to compare the empty weights from the game?

If the issue I saw on first release is still there.. there is no way that is correct either. 

My mission is to fly, fight, and win. o-:|:-o What I do is sometimes get a tin of soup, heat it up, poach an egg in it, serve that with a pork pie sausage roll.

Posted

DCS empty weight is 38,936 lbs. The dash 1 shows basic operating weight with crew and CFTs at 37,500 (33,500 without CFTs) so there is a discrepancy. It is my understanding that this weight includes oil, "unusable" fuel, and probably some other things. The 31,700 figure shows up in multiple places online but is not accurate.

  • Solution
Posted

Ok from the Game The Game Jet F15E vs The Game Jet F15... this is what I had to do to get them the same in game weight to test in game corner speed.

That just seems like something is wrong in the calculation and maths...  

 

 

15.pngF15e.png

My mission is to fly, fight, and win. o-:|:-o What I do is sometimes get a tin of soup, heat it up, poach an egg in it, serve that with a pork pie sausage roll.

Posted

29500lbs empty, the beagle is close to 39000lbs with pilots, oil, and the -229s.  No gas.

[sIGPIC][/sIGPIC]

Reminder: SAM = Speed Bump :D

I used to play flight sims like you, but then I took a slammer to the knee - Yoda

Posted (edited)

I think you guys are missing the point... I think there is something wrong here...  I don't care about the real-life weight of the real jet... dcs is a game so there is something wrong when I can put 97% of the fuel in the C model and 17% of fuel in the E model and their weight is the same.

Pilot and oil weight are meaningless when we are talking about what is modelled in the game.  From that picture above if, I am reading the information presented by the game editor ... something is way off.

As I started in the first post in this room/ space. The game fuel load for the E model appears to no be clearing what the game calculates as weight in the Conformed fuel tanks. that is my best guess 

9 hours ago, Rainmaker said:

Dont have to desire to look up what the C’s static weight is, but nothing wrong with the E’s weight in the picture. No bug there. 

I don't think I am saying there is a problem with the game stating what they have programmed the weight to be, My point is that an empty E model in this game should not be the same reported weight as the Game's C model with 97% simulated fuel weight on board. 

Edited by Boneski

My mission is to fly, fight, and win. o-:|:-o What I do is sometimes get a tin of soup, heat it up, poach an egg in it, serve that with a pork pie sausage roll.

Posted (edited)
32 minutes ago, Boneski said:

I think you guys are missing the point... I think there is something wrong here...  I don't care about the real-life weight of the real just... dcs is a game so there is something wrong when I can put 97% of the fuel in the C model and 17% of fuel in the E model and their weight is the same.

An empty C is about 29500lbs, full tank of gas about 13500lbs.   That brings it to 43000lbs.   An empty beagle weighs in at some 39000lbs, and 17% of 22000lbs internal fuel capacity with CFTs is say 4000lbs, bringing it to 43000lbs.

32 minutes ago, Boneski said:

As I started in the first post in this room/ space. The game fuel load for the appears to no be clearing the what the game calculates as weight in the Conformed fuel tanks. that is my best guess 

You'll have to break it down into details then.

32 minutes ago, Boneski said:

I don't think I am saying there is a problem with the game stating what they have programmed the weight to be, My point is that an empty E model in this came should not be the same reported weight as the Games C model with 97% simulated fuel weight on board. 

A fully fueled F-15C is 43000lbs, an empty E with -229s and CFTs is close to 39000lbs - they're not the same.

So, what do you see that's wrong?

Edited by GGTharos

[sIGPIC][/sIGPIC]

Reminder: SAM = Speed Bump :D

I used to play flight sims like you, but then I took a slammer to the knee - Yoda

Posted

I'm not going to keep going round and round about. If you guys don't see the issue or see the problem that I see, Then its not a problem or and Issue. Thanks

My mission is to fly, fight, and win. o-:|:-o What I do is sometimes get a tin of soup, heat it up, poach an egg in it, serve that with a pork pie sausage roll.

Posted (edited)

In your screenshots above the empty SE is 4281kg heavier than the empty "C" model, and you have put 4178kg more fuel in the "C" model, so of course they are going to weigh about the same. 

I think a better way to look at this would be to put max fuel in each and see if the difference in weight would match what the CFT's hold?

Edited by XpRiV

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Posted

It would not match as C and E internal tanks (Tank1, wing tanks, feeders) fuel capacity is not same.

This is valid assumption from opening post.

1 this is not a bug and in real life these airframes have substantial weight differences 

  • Like 1
Posted

No guys... let me try this way ... a 97% (internal)fuelled game jet of the same sub class should not weight the same as a 17% (internal)fuelled game jet... right? Tht has to be an indication of something not programmed correctly right???

My mission is to fly, fight, and win. o-:|:-o What I do is sometimes get a tin of soup, heat it up, poach an egg in it, serve that with a pork pie sausage roll.

Posted (edited)

What sub class?   The F-15E airframe with CFTs and and -229s is 9000lbs (about 4000kg) heavier than the F-15C airframe when empty.   So yes, they will weigh the same when you put 6000 kg into one and 1700 in the other.   You can do the math yourself and then see where the math doesn't add up - maybe I missed something.

Edited by GGTharos

[sIGPIC][/sIGPIC]

Reminder: SAM = Speed Bump :D

I used to play flight sims like you, but then I took a slammer to the knee - Yoda

Posted

Yeah I think we are kinda talking past each other.. lol as some one said to me that I had read the comments to make sure I was making sense... and maybe some one pointed out too... that the issue may be the way the F15C game jet is programmed. Any way take care and thanks for reading

My mission is to fly, fight, and win. o-:|:-o What I do is sometimes get a tin of soup, heat it up, poach an egg in it, serve that with a pork pie sausage roll.

Posted (edited)

I think perhaps we are talking past each other as you suggest. I would still like to try understanding the heart of the problem you're seeing. Would it be fair to say you didn't understand how 2 versions of the "same" aircraft can be so different in weight? I do believe that the weights in the game are a little heavy for the E and a little light for the C, but not by much.

Consider the following: compared to the C model, the E has:

-Stronger/heavier structure to carry heavier weapon loads, mounting points for the LANTIRN pods, as well as increasing the airframe life from 8,000 in the C to 16,000 in the E. I think I remember hearing this amounts to some 1,500 to 2,000 lbs.

-Second crew member and added avionics accounts for several hundred pounds.

- The 229 engines are about 600 lbs each heavier than the 220 so roughly 1,200 lbs total.

-The CFTs are somewhere around 4,400 lbs for the pair.

Add all these up and you will see there is an increase of somewhere around 8,000 pounds. Add in the LANTIRN pods and you will end up around 9,000 pounds or 4,100 kg heavier than the C. If the numbers are off, they are not off by much. 

Hope this helps.

Edited by quailman84
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