Can you give me an example of how you can achieve the design and construction of an aircraft, an Airbus A380 for instance, without using money at any stage? Are you gonna do barter for any parts, IP, material, labour? So buy RollsRoyce engines with camels? And you sell the A380 to a collective of farmers in exchange for a couple tons of corn? I am really looking forward to reading a non silly explanation of how such a thing as a A380 would happen without money...
I don't know what qualifies as a non silly explanation of a society where things such as the A380 are produced without money or barter, because that probably is silly to you. But I will explain it regardless.
The design of the aircraft would be done just like it is done now, by the efforts of scientists and engineers. These are people who want to work in designing aircrafts, their livelihoods are provided automatically as is for everyone else. This is just something they like to do.
The actual design of the aircraft and the parts used could differ because price wouldn't be an issue. What would be an issue is the resource efficiency of a certain part and the system would assign a number to this, based on all the relevant indicators. Keep in mind that this system would know the exact scarcity levels of every known raw material on Earth, its depletion rate, pollution potentials etc. It would obviously also know all the information related to the technical strength of that material and would help the engineers in choosing the right materials for the plane.
Now this system does not know these things just like that, we need scientists to gather that data. That is why the first step of RBE is always survey. It means that scientists of different fields must actually input all the data in the computer before the computer can actually do anything with it. We can build a computer model of RBE but as long as we don't have real data (which is mostly protected by individual corporations today) it's not a real model.
Continuing with this exercise, the aircraft itself would be built in the same way as it is built know, by machines. The materials would be mined by machines, refined by machines and transported by automated transport vehicles to the factory where it is finally assembled. A small amount of humans are needed to supervise the production and fix the machines in case of issues. These are again people who both want to do it and are qualified to do it.
This is not very different from how it is done now. Most production is done by machines. In RBE there would naturally be more machinery because of one of the goals in the society would be to get rid of unwanted human jobs as fast as possible. We have so many jobs today that can be automated with the level of technology we have now, if we just wanted to. The biggest obstacle for this is money, which causes corporations to often choose cheap human labor instead of machines. It has nothing to do with our actual technology and resources. But this will change soon even in this system.
Finally, there is a bigger question here. Do we even want to build A380's? Is aircraft the most efficient way to travel, long term? These would have to be calculated. Maybe we decide to start building tunnels for very high speed maglev trains instead. All transit systems would be re-evaluated and one thing is for sure, traffic based on private cars is the first thing to go. It's so inefficient it sickens me.