RPL 201 Fuel quantity added, but won't get used if loaded in mission editor.

[grim_reaper68]

Hi

I've noticed today that the RPL 201 isn't usable in the F1 (I added it in the LUA file to have a correct virtual F1CT configuration, and meant it would work). It's indicated as well in the fuel indicator (6300l) like the RP35 (5250l), but in flight the RPL201 seems not to be used. I made a long time flight and ran out of fuel as the fuel gauge indicates 2300l. No problem with the RP35, who will be indicated empty on the fuel panel. After several tests, it seems that if the RPL201 is mounted  in the mission editor (self made mission), the amount of fuel is correct, but not used. When added to the F1 in game, with the refuel and rearm menu, it works fine. I've flown a campaign with the F1EE where the RP35 was on the F1 from the start, and it worked fine. 

Hope my explanation is clear enough.

[fausete]

Hi, @grim_reaper68,

The RPL201 would need internal code changes for it to work correctly in a flyable aircraft, as each payload has its own mass, CoG and inertia -and fuel in the case of external tanks- calculations that are run internally. Just adding the payload to the lua won't be enough to make it work correctly. We have an internal task to eventually add the RPL 201 but we have more pressing tasks to complete first. I think I has mentioned it in a previous conversation.

[grim_reaper68]

Ok. No problem, I know the F1M is on the way. I'm just astonished, that as far as it's added in game, it works. Made test flights with and without it and I have more flight time with it. The weight seems to be taken in account, because I need more runway to take off. It was just about the fact that it didn't work when loaded in the mission editor. Continue your great job, I love this module.  

[fausete]

Yes, when you load it, payload weight will be accounted for automatically but fuel tanks need extra internal calculations due to their changing mass. So, in principle, everything should be fine the moment you start the mission even if the fuel tank is not accounted internally but things (both fuel and physics calculations) will become less correct as the simulation progresses.

[grim_reaper68]

Ok, I understand better what you mean! It's about the flight model, that would effectively be affected by the adding of the tank. I didn't thought about that aspect. In fact such a big volume of fuel under the belly of the F1 will lower the center of gravity and change the flight characteristics. I remember in 1998, when I made my military service in the RC 2/30 Normadie-Niemen, that there where some flight restiction while flying with the RPL201. 

[fausete]

Exactly, and as the tank empties, the shift upwards of the CoG wouldn't be taken into account, and the computations of the remaining fuel in the aircraft would also be wrong.

[grim_reaper68]

The computation works fine , as when I add the fuel tank the total amount of fuel is at 6300.And light of the center tank lights on when I'm at 4100. 

[fausete]

Okay, then it's a matter of the detotaliser not detecting it. From what I see in the code, the refuel should also not work correctly. Once we get all this adapted for the RPL 201, we will add it for all aircraft.

[grim_reaper68]

Yes, I think so, as far as it only concerned the loading in the mission editor. I have collected some information about flying with the RPL201, but maybe you have the same. When taking off with the RPL201, the antiskid must be deactivated, the yaw should have been trimmed or corrected manually (I don't know if the word footly exist ), and there was a risk to bump it at landing if AOA was to high or too much vertical speed. Maybe it can be added to the model, the fact that if AOA and vertical speed is too high, it causes damage to the fuel tank . Dogfight was of course forbidden. 

A little training mission, like IRL would then be cool.

I know I'm asking much 

[Loukuins]

On 12/30/2023 at 2:12 PM, fausete said:

Okay, then it's a matter of the detotaliser not detecting it. From what I see in the code, the refuel should also not work correctly. Once we get all this adapted for the RPL 201, we will add it for all aircraft.

Thanks a lot! There is some good pictures of the RPL201 on the internet if you want to improve the model in the same time when you got time to work on it. 
Thanks again!

[fausete]

Okay, we've properly added the RPL201 to the flyable F1s. Should be available in the next update most likely.

[Loukuins]

OMG you're a true HERO I love you so much and thank you!!!!!! 

[fausete]

You're welcome, it's the three kings night in Spain so I thought we could deliver a present

[MF1]

Thanks a lot !

Indeed, thank you for the monitoring and development.

As there are 3 mages ; The first is the RPL201, the second could be the Matra JL-100, and the third, the Exocet with the F1M?

 

De hecho, gracias por el seguimiento y el desarrollo.

Como son 3 magos ; El primero es el RPL201, el segundo podría ser el Matra JL-100, y el tercero, el Exocet con el F1M?

[Vibora]

On 1/5/2024 at 11:55 PM, MF1 said:

Thanks a lot !

Indeed, thank you for the monitoring and development.

As there are 3 mages ; The first is the RPL201, the second could be the Matra JL-100, and the third, the Exocet with the F1M?

 

De hecho, gracias por el seguimiento y el desarrollo.

Como son 3 magos ; El primero es el RPL201, el segundo podría ser el Matra JL-100, y el tercero, el Exocet con el F1M?

We'll do our best, though we can't promise it will be included

[grim_reaper68]

No problem, we all know you have a lot of work to do. Again thanks a lot for this great module.

[MF1]

11 hours ago, grim_reaper68 said:

No problem, we all know you have a lot of work to do. Again thanks a lot for this great module.

Completely agree with grim_reaper68 

Totalmente de acuerdo con grim_reaper68