What feature/glitch/exploit did you like that was removed in an update?
For a video game, sure, they can add fuel lines or multiple fuel transfers at once, make flights more fuel efficient.
In real life? You'd run into many fluid dynamic and mechanical issues, say for a booster fuel transfer to core, you'd have to work with transferring fluids between areas of possibly varying pressures, and then there's staging, making sure the port seals properly after separation would be a challenge. Last thing you want is a propellant leak.
Chelomy planned to use asparagus staging for his UR-700 lunar direct launch vehicle, but he never got to construct it. Furthest he got was building the RD-270 engine tailored specially for the UR-700, designed and built by Glushko. Till this day, it might be the most powerful hypergolic single chamber rocket engine to date.
In real life? You'd run into many fluid dynamic and mechanical issues, say for a booster fuel transfer to core, you'd have to work with transferring fluids between areas of possibly varying pressures, and then there's staging, making sure the port seals properly after separation would be a challenge. Last thing you want is a propellant leak.
Chelomy planned to use asparagus staging for his UR-700 lunar direct launch vehicle, but he never got to construct it. Furthest he got was building the RD-270 engine tailored specially for the UR-700, designed and built by Glushko. Till this day, it might be the most powerful hypergolic single chamber rocket engine to date.
A more modern example would be the Falcon Heavy. They scrapped it last minute due to reliability and possibly performance concerns.
Usually to combat the differential pressure between the feeder and receiver tank, they'd use a turbopump. How do they power this turbopump?
Could be electric, that means we'll have to install a generator or a big battery array on the rocket, neither of those two are cheap nor lightweight.
Could be by the engine turbines, but that'll need us to pipe the propellant all the way down to the engine and up again into another stage, long pipes would lead to this thing called "head loss" and those pipings are pretty heavy... and the extra chore added onto the turbine would add to its load, which will hurt its propellant feed rate, which hurts thrust...
They could use pressure instead of a pump, from the tank pressurant. But that'll need the feeder tank's pressure to exceed the receiver tank significantly to ensure a proper flow rate... but with the same standard tanks? That could risk a tank rupture....
Usually to combat the differential pressure between the feeder and receiver tank, they'd use a turbopump. How do they power this turbopump?
Could be electric, that means we'll have to install a generator or a big battery array on the rocket, neither of those two are cheap nor lightweight.
Could be by the engine turbines, but that'll need us to pipe the propellant all the way down to the engine and up again into another stage, long pipes would lead to this thing called "head loss" and those pipings are pretty heavy... and the extra chore added onto the turbine would add to its load, which will hurt its propellant feed rate, which hurts thrust...
They could use pressure instead of a pump, from the tank pressurant. But that'll need the feeder tank's pressure to exceed the receiver tank significantly to ensure a proper flow rate... but with the same standard tanks? That could risk a tank rupture....
