The giant ship that Ella mentioned has actually been put on the agenda.
Strange matter can resist super strong pressure, or it can be said that strange matter itself requires super strong pressure.
So if a large mass object is manufactured inside the battleship, it can use the gravity of the large mass object to provide energy for the battleship.
The reason why this has not been implemented before is that a large mass object inside the battleship will definitely cause instability and deformation of the battleship itself, after all, a large mass object that can provide sufficient gravitational energy is not as simple as a dwarf planet, but requires stronger gravity.
The difference between a battleship and a star city is that a star city does not need to move at super high speeds, compared to a battleship, it is more like a space fortress, or a command ship without the ability to move.
Moreover, according to the latest research, this star city cannot leave the star system, because the star city itself resists gravity by balancing the gravitational forces of the star and the star city itself, and uses some matter to collect and consume the energy of gravity, so that the gravitational force between the star city is reduced again.
It can be said that the technology of the star city itself is not difficult at all.
Does this mean that the Olive Branch cannot build a giant battleship?
This is naturally possible.
The reason why the Olive Branch built the star city is that it can provide living space, and it can also continuously use gravitational energy to store energy, which is a function that a battleship does not have.
And the main reason is also the technological form of the Olive Branch itself, the star city can be decomposed into a huge fleet, so they have more reason not to build a giant battleship, which is redundant for them.
Especially in reality and in interstellar games, your battleship is just there, but in reality, the battleship itself represents a huge expense, just like a person buying a car and then having various expenses.
Taking the medium-sized aircraft carrier of Earth as an example, the annual expenses of a medium-sized aircraft carrier are usually over 1 billion, and each time it goes to sea, the expenses increase by 3-5 million, and the expenses of a fleet exercise are usually over 100 million, and the total expenses of an aircraft carrier before retirement are easily over 100 billion, and its service life is only a few decades.
As with military equipment, maintenance costs are much higher than those of ordinary cars, and the annual expenses of a battleship are usually much higher than those of an aircraft carrier on Earth, generally 20-40% of the cost of the battleship, and the service life of a federal ordinary battleship is much longer than that of an aircraft carrier, generally 2000-5000 years, which means that the most expensive battleship from service to retirement consumes 50 times the cost, and can be up to 250 times.
For example, the Kunlun, the Kunlun has actually been stationary for a long time, but it still consumes 16.2 billion energy coins every year, and it has been over 2000 years since Yan Xia last boarded the Kunlun, nearly 3000 years, so you can imagine how expensive the Kunlun is.
It should be noted that the highest-valued company in the federal government is currently only over 300 billion energy coins, and it would go bankrupt in 20 years.
The maintenance cost of the star city itself is already very high, and the Olive Branch has no need to add to its burden.
This is also why Ella does not replace some of the old battleships within the star system, because new battleships are larger and stronger, which means higher manufacturing and maintenance costs, and the federal government cannot afford such a huge expense.
However, the giant ship era is very necessary for the federal government.
The arrival of the giant ship era also means that the federal government will build more small battleships, and only one giant ship is needed for each star system, according to Ella's calculations, if the giant ship completely replaces the small battleships, the maintenance cost will actually be reduced by about 103%, which is very useful.
It should be noted that the federal government currently has too many battleships because it is in a state of war readiness, but if it only needs to maintain internal stability and deter external enemies, the number of battleships within the federal government can be directly reduced by 50%.
The reason why Ella destroyed so many battleships in the battle with the Olive Branch was not because she was too heartbroken, because it was better for these battleships to be destroyed, after all, they had already been transported back to the federal government, and the cost of returning them was much higher than that of rebuilding them in the federal government.
There is another factor in the cost-saving of giant ships.
Small battleships require multiple ship types to work together, and each ship type needs to perform different functions, but giant ships, because of their size, can concentrate these functions on one battleship, i.e. one battleship can be equivalent to a fleet or even multiple fleets.
The problem of coverage can be solved by using more fighters and spaceships, as the giant ship is large, it can accommodate more of these small things, and these small things do not even need to be maintained, they can be replaced when they are broken.
In terms of firepower, a small battleship can only carry a maximum of 3 main guns, while a giant ship can carry dozens or even hundreds of main guns, and can even be equipped with high-power main guns, so the firepower of the giant ship is also superior.
All these reasons are why the federal government is now moving towards the giant ship era.
The Kunlun is the first trial giant ship.
However, the giant ship in Ella's plan is not a dwarf planet-class giant ship like the Kunlun, but a true planet-class giant ship or giant planet-class giant ship.
These two giant ships provide space for another thing.
That is a white dwarf.
The huge giant ship can accommodate a white dwarf, using the terrifying gravity of the white dwarf to drive the giant ship, providing the giant ship with energy that will last for billions of years.
This is simply crazy.
However, after the discovery of the strange matter of the silent gold, the white dwarf giant ship has become a possibility, and Ella even has a crazier idea, Yan Xia flipped through the records of the simulated universe and found that in the last 200 years, Ella has been experimenting with neutron star giant ships in it.
If it is not because the specific characteristics of black holes have not yet been understood, and the simulated universe cannot simulate black holes, Yan Xia thinks that Ella will test a black hole giant ship, or even a super-large black hole giant ship, the kind with thousands of millions of times the mass of the sun.
Of course, these are still in the stage of imagination.
As far as Yan Xia knows, Ella's current goal is still practical, she will use a small black hole to manufacture a high-density body inside the Kunlun, then use a huge amount of energy to maintain the stability of the high-density body, finally manufacture a gravitational energy device around the stable high-density body, and finally make the energy produced by the gravitational energy device higher than the energy consumed to maintain the stability of the high-density body, achieving positive energy acquisition.
For this, Ella and Chu make a deal.
The content of the deal is advanced gravitational energy technology!