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Posted

Can anybody confirm that when using drop weapons command, ony two tanks are dropped (when using drop tanks alt+r ,all 4 tanks are jettissoned)?

Does ctl+w command drop emptier tanks first, or is it random?

What are designation on fuel quantity panel?

[sIGPIC][/sIGPIC]

Pilot from Croatia

Posted

Ctrl-W will drop the 2 outside tanks first, hit it again it wil drop the center tank. After that it will begin to drop weapons if you continue to hit it. Try taking off and watch your fuel guage. Drop the outboard tanks and then the centerline tank and watch the fuel levels change. I'm assuming you mean the F-15 and not the MiG, but the MiG should act the same, except for the fuel levels.

 

Alt-R will drop any and all external tanks.

Posted

F-15 has 13454 internal fuel ... 24000 or so with 3 externals.

 

You could fly that thing in circles around the map and not run out of fuel, so long as you fuel-efficiency conscious.

[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

  • 1 year later...
Posted

I'm resurrecting this old thread to bring up something that I noticed a couple of days ago. The LOMAC F-15 uses fuel from all 3 externals at the same time. Although you can drop the outboard tanks first, they are not used first. I was told that this is not how this used to be modelled. The LOMAC 15 used to use the fuel in the outboard tanks before using fuel from the center tank and this was changed. Can someone confirm this?

Guest IguanaKing
Posted

I don't know about the F-15 stores usage, but I know that the same is AFU on the A-10.

Posted

The wing tanks usually transfer first, then the centerline. All external fuel replenishes internal fuel tanks. The external fuel doesn't feed on the ground - you're using internal fuel for start, taxi, and takeoff until gear handle is in the up position. This pressurizes the external tanks and then they feed. But, to answer your question, the wing tanks feed, then the centerline.

 

On a side note, when you air refuel, all tanks should fill, including the wing and centerline tanks. But, of course, not in LOMAC. ;)

Posted
The wing tanks usually transfer first, then the centerline. All external fuel replenishes internal fuel tanks. The external fuel doesn't feed on the ground - you're using internal fuel for start, taxi, and takeoff until gear handle is in the up position. This pressurizes the external tanks and then they feed. But, to answer your question, the wing tanks feed, then the centerline.

 

On a side note, when you air refuel, all tanks should fill, including the wing and centerline tanks. But, of course, not in LOMAC. ;)

 

On the F-16 the centerline tank feeds first then the wing tanks. I have a co-worker that worked on F-15 fuel systems, I'll ask him which one feeds first centerline or wing tanks. And the 16 use external tanks on the ground not internal. I bet 100% that the 15 is the same way. Look at lock on sit on the ground in the 15 and watch your fuel gauge.

Posted

Whick tanks are being used is selectable in RL, right?

 

Can anyone confirm that LOMAC used to model the outside tanks being used before the centerline tank? GG? I know you're big on fuel management.

Posted
Whick tanks are being used is selectable in RL, right?

 

Can anyone confirm that LOMAC used to model the outside tanks being used before the centerline tank? GG? I know you're big on fuel management.

 

 

1. Yep

 

2. We would have to ask ED that question.

Posted
On the F-16 the centerline tank feeds first then the wing tanks. I have a co-worker that worked on F-15 fuel systems, I'll ask him which one feeds first centerline or wing tanks. And the 16 use external tanks on the ground not internal. I bet 100% that the 15 is the same way. Look at lock on sit on the ground in the 15 and watch your fuel gauge.

 

 

I'll take your bet! What do I win if you're wrong?:P

Posted
I'll take your bet! What do I win if you're wrong?:P

 

 

OK I just talked to him and.....:censored:.....your right. We both said that it was dumb but the tanks pressurize off of the WOW switch (weight on wheels switch). LOL we both said tha has got to be the dumbest thing on the 15. You would think that you would want to use your external tank fuel first, in case you had to jettison them. I have worked on F-15 and A-10 and they both use the external tanks first.

 

You won....what do you want? :crazy:

Posted

The mains are used on take-off so that if there's trouble, the externals can be jettisoned and you won't flame out without adding the step of switching fuel source during whatever you have to do during the trouble to get things under control. This was SOP even back during WWII in a P-38 training film I saw. Once the P-38 was up and both engines were deemed fine, flaps and gear were raised and then the fuel selector was switched to externals.

Posted
The mains are used on take-off so that if there's trouble, the externals can be jettisoned and you won't flame out without adding the step of switching fuel source during whatever you have to do during the trouble to get things under control. This was SOP even back during WWII in a P-38 training film I saw. Once the P-38 was up and both engines were deemed fine, flaps and gear were raised and then the fuel selector was switched to externals.

 

The 15 automatically switches to feed from the externals once the landing gear is raised. In the 16 the externals feed on the ground and they stay that way until they are empty. If the 16 feed like the 15 you would get a trapped fuel inducation in the HUD. I'm still baffled by the way it feeds on the ground.

Posted
OK I just talked to him and.....:censored:.....your right. We both said that it was dumb but the tanks pressurize off of the WOW switch (weight on wheels switch). LOL we both said tha has got to be the dumbest thing on the 15. You would think that you would want to use your external tank fuel first, in case you had to jettison them. I have worked on F-15 and A-10 and they both use the external tanks first.

 

You won....what do you want? :crazy:

 

Your buddy must've worked on A-models. The C pressurizes off the landing gear handle. BTW, it's not dumb;) ... when the tanks are pressurized, all fuel is really burned internally and replaced by fuel in the wing externals first then the centerline. So really the F-15's always burning internal fuel, it's just that it constantly gets replaced by the external fuel tanks. The short time we are using strictly internal fuel is for engine start, taxi, and takeoff to gear up. Once the gear's up, the externals are pressurized and they feed and replenish the fuel used in the internal tanks. This lessens the possibility of trapped fuel and possible flameouts from nonfeeding external fuel tanks.

 

Anyway, that's what you get for doubting me... after all, I did fly them. :joystick:

Posted
Your buddy must've worked on A-models. The C pressurizes off the landing gear handle. BTW, it's not dumb;) ... when the tanks are pressurized, all fuel is really burned internally and replaced by fuel in the wing externals first then the centerline. So really the F-15's always burning internal fuel, it's just that it constantly gets replaced by the external fuel tanks. The short time we are using strictly internal fuel is for engine start, taxi, and takeoff to gear up. Once the gear's up, the externals are pressurized and they feed and replenish the fuel used in the internal tanks. This lessens the possibility of trapped fuel and possible flameouts from nonfeeding external fuel tanks.

 

Anyway, that's what you get for doubting me... after all, I did fly them. :joystick:

 

He worked on 15's in Alaska and I worked on 16's and A-10's up there, I currently work on 16's at Luke AFB. He worked on C's and D's up there. I understand how the fuel system works since that's what my job in the Air Force is. But I have never worked on 15's, only 16's and A-10's. And there externals both pressurize on the ground and they feed out first. To me that just seems weird since I have never heard that before. WOW your one of the smart ones I have talked to. You seem to know some stuff about your systems.

 

Since I have you here what do you think about the 120 in LO? And the 15, how is it?

 

And the WOW switch is operated by the gear handle :music_whistling:

Posted
Wanna make another bet on how he answers? :music_whistling:

 

Sure :dunno:

 

 

:drunk:

Posted

I can tell you how he'll anwer: The LO 120 is not realistic in anything but appearance.

 

And then he'll follow up with: 'And that's all I can tell you' :)

[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

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