Mercedes Mullins
In Kerbal Space Program (KSP), linking fuel tanks to engines depends on the type of fuel and engine being used. Solid boosters use solid fuel, while normal engines use a mix of oxidizer and liquid fuel. Liquid fuel tanks can provide fuel to any engine with a valid fuel delivery path, and in most rockets, a fuel tank will provide fuel to any engine in its stage. Monopropellant and xenon tanks will provide fuel to any engine attached to the rocket, regardless of the fuel delivery system. To transfer fuel between tanks, you can use fuel lines or a crossfeed system, which involves pumping fuel from one tank to another against tank pressure. Additionally, in KSP, you can adjust the Flow Priority option in Advanced Tweakables to control the order in which fuel tanks are emptied when an engine can draw fuel from multiple sources.
| Characteristics | Values |
|---|---|
| Fuel type | Solid fuel boosters, liquid fuel |
| Fuel source | Monopropellant and xenon tanks |
| Fuel transfer | Right-click menu, hold Alt and click on another tank |
| Fuel flow | Liquid fuel tanks can provide fuel to any engine with a valid fuel delivery path |
| Fuel priority | Advanced Tweakables option in settings allows users to set fuel priority for different tanks |
| Fuel transfer without docking | Use a claw to transfer fuel |
| Fuel lines | Fuel lines can be used to transfer fuel from additional tanks to a central tank |
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What You'll Learn
Using the right-click menu, select one tank, hold Alt, and click on another
To link fuel tanks to an engine in KSP, you can use the right-click menu. This process involves selecting one tank, holding down the Alt key, and then clicking on another tank. This will initiate the fueling process, allowing fuel to be transferred between the tanks and eventually to the engine.
When you right-click on the first fuel tank, a menu will appear. From this menu, you can select the specific tank you wish to work with, such as the Rockomax Jumbo-64 Fuel Tank. By holding Alt and right-clicking on the target spacecraft's fuel tank, you can begin the fueling process. This process involves transferring fuel from one tank to another, ensuring a proper fuel flow path.
The ability to link fuel tanks and control the fuel flow is crucial in KSP, especially when dealing with multiple engines and fuel types. By utilizing the right-click menu and holding Alt while clicking on another tank, you can establish a fuel connection between the tanks. This enables you to prioritize fuel distribution and ensure that engines receive fuel from the correct sources.
Additionally, it's important to consider the types of fuel and engines involved. KSP allows for various fuel combinations, such as liquid fuel and oxidizer, or monopropellant and xenon tanks. Different engines have specific fuel requirements, and understanding these requirements is essential for successful space missions. For example, solid boosters typically use solid fuel, while liquid engines use a mix of oxidizer and liquid fuel.
By mastering the art of linking fuel tanks and understanding fuel priorities, you can optimize your spacecraft's performance in KSP. This includes employing techniques such as asparagus staging, where external boosters feed fuel into the main engine or other boosters, ensuring that the remaining craft tanks are full during stage separation. With careful fuel management and the utilization of the right-click menu with the Alt key, you can enhance your spacecraft's efficiency and achieve your mission objectives.
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Ensure fuel compatibility
To ensure fuel compatibility in KSP, it is important to remember that different tanks have different fuel types and configurations. Before attempting to transfer fuel, you must ensure compatibility between tanks. Transferring incompatible fuel types can result in fuel loss or even catastrophic failure.
Liquid fuel tanks, for instance, are designed for use with liquid fuel engines. They can also be used for jet engines, but not rocket engines, as they don't contain the oxidizer required for rocket engines. Jet engines can rely on atmospheric oxygen as an oxidizer. Monopropellant tanks and xenon tanks will provide fuel to any engine attached to the rocket, regardless of the fuel delivery path.
If you are using solid boosters, you cannot use liquid fuel as they are not compatible. Solid boosters use solid fuel, not an oxidizer/liquid fuel mix which normal engines use.
You can mount additional fuel tanks radially and transfer their contents to a central tank using fuel lines. This can be used to construct an asparagus staging system where outer tanks are drained first and dropped once empty, while still keeping the central tank full.
If Advanced Tweakables are enabled, then fuel tanks will have a "Flow Priority" option. If an engine can draw fuel from multiple fuel tanks, then tanks with a higher flow priority will be emptied first, followed by tanks with a lower flow priority.
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Set the direction and priority through Advanced Tweakables
To link fuel tanks to an engine in Kerbal Space Program (KSP), you must first enable Advanced Tweakables. This option allows you to set the direction and priority of fuel flow between tanks and engines.
With Advanced Tweakables enabled, you can set the "Flow Priority" of each fuel tank. This determines the order in which the tanks are emptied when supplying fuel to an engine. For example, if you have three rocket fuel tanks with flow priorities of 30, 0, and -10, respectively, attached to a single LV-909 "Terrier" Liquid Fuel Engine, the engine will first draw fuel from the tank with the highest priority (30) until it is empty, then move on to the next highest priority tank (0), and so on.
Additionally, Advanced Tweakables allow you to isolate fuel tanks and engines by allowing or disallowing fuel crossfeed. This can be useful if you want to prevent specific engines from drawing fuel from certain tanks.
By setting the direction and priority of fuel flow through Advanced Tweakables, you can control which engines draw fuel from specific tanks and in what order, allowing for more efficient fuel management in your KSP spacecraft.
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Use fuel lines to connect tanks and engines
To link fuel tanks to engines in Kerbal Space Program (KSP), you need to use fuel lines. This process involves transferring fuel from one tank to another or directly to the engine, ensuring a proper fuel flow path. Here are the steps to achieve this:
Firstly, understand that fuel lines are used to transfer fuel between tanks and engines. They are essential for supplying fuel to the engines and managing fuel distribution in your spacecraft.
When setting up fuel lines, you can mount additional fuel tanks radially, either with or without decouplers. These fuel tanks can then be connected to a central tank using fuel lines, allowing for fuel transfer. This setup is known as an asparagus staging system, where the outer tanks are drained first and dropped when empty, while the central tank remains full.
To establish a proper fuel flow path, ensure that your fuel tanks are filled up. This enables them to provide fuel to any engine on its stage and supply fuel through the engine valve. Monopropellant and xenon tanks will provide fuel to any engine attached to the rocket, regardless of the fuel delivery system.
When using fuel lines, you can adjust the flow priority of tanks if you have Advanced Tweakables enabled. This allows you to control the order in which tanks are emptied. For example, if you have three rocket fuel tanks with different flow priorities attached to an engine, the engine will first use fuel from the tank with the highest priority, followed by the tanks with lower priorities.
Additionally, you can transfer fuel between tanks by right-clicking on the source tank while holding the Alt key (Option on Mac), and then clicking on the target tank. This will initiate the fueling process. Alternatively, you can use the In/Out switch under the resource indicators to manually transfer fuel between containers.
By following these steps and utilizing fuel lines effectively, you can successfully connect fuel tanks to engines in KSP, ensuring a steady supply of fuel for your spacecraft's engines.
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Create a fuel supply link manually if fuel cannot run through decouplers
When creating a fuel supply link manually, it is important to ensure that the correct fuel type is being used for the engine in question. Solid fuel boosters, for example, cannot be attached to liquid fuel tanks, and vice versa. Therefore, it is imperative to verify that the fuel type is compatible with the engine before attempting to establish a fuel supply link.
To create a fuel supply link manually, one method is to utilise fuel lines. Fuel lines can be used to connect fuel tanks to engines, ensuring that the fuel flows in the correct direction and priority, which can be adjusted through advanced tweakables. This approach is necessary when fuel cannot pass through certain types of decouplers, as fuel lines provide a direct and dedicated path for the fuel to follow.
Another strategy to consider is the use of radial decouplers. By attaching the fuel tanks radially to the boosters, you can provide the necessary boost during the initial stage of the launch. Once the fuel in the boosters is depleted, the radial decouplers can be utilised to detach the boosters, allowing you to continue with the liquid fuel engines for the remainder of the journey.
In some cases, it may be beneficial to adjust the symmetry settings to manage the alignment of the tanks and decouplers. By temporarily attaching the tank to a different location first, you can then pick up the assembly and adjust the symmetry to ensure the correct number and placement of decouplers. This technique can help overcome challenges related to the alignment of fuel tanks and decouplers.
Additionally, it is important to be mindful of any intersecting parts that may hinder the attachment of fuel tanks. If a tank intersects with another component, such as ladder steps or a larger engine part, it may be necessary to temporarily remove the obstructing part, attach the fuel tanks, and then replace the removed part. This approach can help resolve issues related to the physical arrangement of components and fuel tanks.
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Frequently asked questions
To link fuel tanks to an engine in KSP, you need to ensure that the fuel tank is filled up and has a proper fuel flow path. This will allow it to provide fuel to any engine on its stage. Monopropellant and xenon tanks will provide fuel to any engine attached to the rocket, regardless of the fuel delivery system.
To transfer fuel, you need to right-click on the source tank while holding Alt and then click on the destination tank. You can then use the In/Out switch to transfer the fuel.
Asparagus staging is a highly efficient method where external boosters feed fuel into the main engine or other boosters. This ensures that the remaining craft tanks are still full when the boosters separate. In KSP, this can be achieved by mounting additional fuel tanks radially and transferring their contents to a central tank using fuel lines.
