Learjet Introduction to the flightdeck released

Quote from Jetjockey10

I just had a quick look at the Learjet flightdeck data at the wiki site. Very, very nice and easy to read with the highlighting and plenty of screenshots. Well done, Jan.

Regards,

Ray

Thanks, yeah I'm working on the flight tutorial for the Learjet. A320 is next in line

Quote from Heermeyer47

But I do not understand one thing: why in Cessna you can refuel with fuel at the required distance of flight, and the fuel is properly consumed, but there is no fuel in Learjet at all? Fantastic engines - perpetuum mobile!

Because the fuel system is not complete yet and we have other topics to work on.

It's not difficult to just make the fuel level go down on the display, I could add that to the Learjet in a few hours. The tricky part is reducing the mass of the aircraft dynamically thus changing it's inertia dynamically. So at the moment it is not yet implemented because it doesn't have any effect yet when the level decreases or hits zero. The engines are not shutting down and the aircraft is not yet getting any lighter. So there is no reason to implement it other than: the fuel number went down :O

But it is nice to hear that you guys want something like this, has been a while since anyone talked about fuel. And just for that I'm actually going to look into the fuel system of the Learjet and may be able to quickly add this in.

Quote from 105OE

Fake fuel flow or real fuel flow with the associated weight change?

Real fuel flow without mass changes. I'm saying mass changes cause we won't just change the gravity force "a.k.a. weight" but add inertia due to the position of the mass and the dimensions of the fuel tank. So with full fuel tanks the roll inertia will be higher for example. Not just the aircraft needs more lift for level flight...

I can implement the entire fuel system, with pumps, cross feed and what not. It's just that the tanks don't yet add any inertia or mass to the wings. The rest of the system is working, I can create a full fuel line networks with multiple fuel tanks and connect them together to my liking.

In the C172 this is already implemented fully, and with my cold and dark mod of this aircraft the engine is also shutting down if you fly one tank empty or select the cut off. Now, I can't yet kill the LJ45 engines but I can make it so that you can draw more fuel from one tank if you idle one side and add full thrust to the other... stuff like that is doable.

The mass and therefore inertia change are very important, roll inertia is just one example, there is might not be as noticeable. But you can't tell me an empty 747 and a fueled up 747 accelerate in the same time on the runway. Weight is carried by the wheels then and the friction isn't that high to play that much of a difference. The difference in acceleration comes from the mass not just weight. Weight is so boring it just points towards earth and doesn't actually do much only in terms of lift and downhill force component, etc. That is just the gravity force of the aircraft, doesn't say anything in terms of physics. Mass is what comes up in all the equations, centripetal force, acceleration (newtons laws), even the gravity forces are described in terms of masses.

I'm not sure if you quite understand where I'm going with this, weight is a gravitational force, a by product of mass. Which is why if we simulate mass, its gravity and weight will be a by-product but only tell a small portion of the story. So no just adding weight to the aircraft is not going to cut it, that would just break the laws of physics we programmed

Quote from 105OE

Confirmed. That's why I mentioned that a lightweight 747 performs/accelerates much better than a heavy one.

I thought that FS2 already does these calculations automatically and simply putting the fuel (weight) into the correct locations is the only thing needed.

It works that easy in FSX, x-plane etc.

Well the user interface will allow you to do that but the fuel tanks in the aircraft will be defined by their positions and dimensions in the tmd file. We're not just arbitrary going to add "some generic value" to the aircraft's mass and some inertia, for us it is actually easier to just specify the tank positions and then work from there.