Every tank in the palette: what it carries, how much of it, and its figures from the info card.
A tank is what feeds the engines and thrusters above and below it. Two stretch under a Length slider and grow their mass, price and capacity together; two are fixed spheres and pods you bolt on where you need them. The two stores of the helium-3 chain — a cold tank for helium-3 and a trap for antimatter, both of which launch empty — sit with the rig and the converter in Mining instead. See Building a rocket for how any of them join the stack, and Resize a tank for the exact steps on the stretchable ones.
Fuel Tank
Part · Tanks · sold by Rocketry
The main propellant tank: drag its Length to make it hold more, and its mass, price and capacity all scale with it together.
Figure
Value
DRY MASS
424 kg
FULL MASS
2824 kg
COST
80 cr
STORES OXYGEN
288 u · 1440 kg
STORES METHANE
192 u · 960 kg
DRAG NOSE-ON
1.0× (blunt)
HEAT EXPOSURE
1.45×
BODY LIFT CL
0.25
MAX TEMP
1300 K
MAX G
20 g
IMPACT
16 m/s
BLAST
120 kN · 3.8 m
BLAST FULL
720 kN · 17.6 m
NODES
5
It stacks top and bottom, offers a rail along each side for radial parts, and carries a face on its body that a wing's stud can drop onto anywhere.
It has no actions to tap. Its only property is a Length slider, from 48 to 256, hangar only. Its sheet in the hangar also has a Fuel line button, for piping it into another tank or an engine: see Draw a fuel line.
Pairs with any throttled engine below it. Instead of a longer tank, stage a second one behind a separator once a stack gets tall.
HT-2 Hypergolic Tank
Part · Tanks · sold by Hypergolic Storage
A stretchable tank of hypergolic propellant, the fuel an RCS Thruster Block or an Escape Motor burns: it stacks and resizes exactly like the Fuel Tank, on a shorter base.
Figure
Value
DRY MASS
80 kg
FULL MASS
400 kg
COST
80 cr
STORES HYPERGOLIC
40 u · 320 kg
DRAG NOSE-ON
1.0× (blunt)
HEAT EXPOSURE
1.45×
BODY LIFT CL
0.25
MAX TEMP
1600 K
MAX G
20 g
IMPACT
14 m/s
BLAST
60 kN · 2.7 m
BLAST FULL
140 kN · 6.8 m
NODES
4
It stacks top and bottom, and offers a rail along each side for radial parts.
It has no actions to tap. Its only property is a Length slider, from 24 to 128, hangar only.
Pairs with an RCS Thruster Block or an Escape Motor on the same ship. Instead of it, the HR-1 Hypergolic Sphere or HR-4 Hypergolic Pod bolt straight to a flank with no stack point spent.
HR-1 Hypergolic Sphere
Part · Tanks · sold by Attitude Control
A small fixed sphere of hypergolic propellant: no slider, just a single tank you bolt on where you need a little more range for the thrusters.
Figure
Value
DRY MASS
30 kg
FULL MASS
126 kg
COST
30 cr
STORES HYPERGOLIC
12 u · 96 kg
DRAG NOSE-ON
0.8×
HEAT EXPOSURE
0.8×
MAX TEMP
3400 K
MAX G
20 g
IMPACT
12 m/s
BLAST
15 kN · 1.4 m
BLAST FULL
39 kN · 3.7 m
NODES
1
It bolts to a single point on a flank; it does not stack.
It has no actions or properties: nothing to set.
Pairs with a single RCS Thruster Block on a light ship. Instead of it, the HR-4 Hypergolic Pod holds more on the same kind of mount.
HR-4 Hypergolic Pod
Part · Tanks · sold by Hypergolic Storage
A longer fixed pod of hypergolic propellant on the same kind of radial mount as the Sphere, holding more than three times as much.
Figure
Value
DRY MASS
95 kg
FULL MASS
415 kg
COST
95 cr
STORES HYPERGOLIC
40 u · 320 kg
DRAG NOSE-ON
0.7×
HEAT EXPOSURE
0.7×
MAX TEMP
3400 K
MAX G
18 g
IMPACT
12 m/s
BLAST
40 kN · 2.2 m
BLAST FULL
120 kN · 6.6 m
NODES
1
It bolts to a flank on a rail, so you can slide it along the mounting part before it locks in.
It has no actions or properties: nothing to set.
Pairs with a ship carrying several RCS Thruster Blocks or an Escape Motor. Instead of it, the HR-1 Hypergolic Sphere is lighter when a little gas is enough.
The wide stack's tank: 8 m across, twice the Fuel Tank's diameter, and eight times its fuel per metre. It stretches like the Fuel Tank and its mass, price and capacity scale with it together.
Figure
Value
DRY MASS
2860 kg
FULL MASS
22060 kg
COST
600 cr
STORES OXYGEN
2304 u · 11520 kg
STORES METHANE
1536 u · 7680 kg
DRAG NOSE-ON
1.0× (blunt)
HEAT EXPOSURE
1.45×
BODY LIFT CL
0.25
MAX TEMP
1300 K
MAX G
20 g
IMPACT
16 m/s
BLAST
300 kN · 6.1 m
BLAST FULL
5100 kN · 48.9 m
NODES
5
Every figure above is quoted at its base length of 8 m. It stacks top and bottom, offers a rail along each side for radial parts, and carries a face on its body that a wing's stud can drop onto anywhere. A wide part on a narrow one joins fine at the stack point; the Adapter is what makes the step look and fly like a rocket.
It has no actions to tap. Its only property is a Length slider, from 64 to 384 (4 m to 24 m), hangar only. Its sheet in the hangar also has a Fuel line button.
Pairs with a Giant Engine, a Quad Cluster or a Nine Cluster below it, and a Vacuum Engine L on the stage above. A full one weighs 22 t, so a Launch Pad at level 3 or 4 is what lifts a stack of them. Instead of it, four Fuel Tanks side by side carry the same fuel in more parts.
Adapter
Part · Tanks · sold by Wide Stacks
A cone of tank between two stack diameters. Both of its end widths are yours to set, so one part steps an 8 m stage down onto a 4 m one, a 4 m one onto a 2 m booster, or, with both ends alike, stands in for a short tank. It holds fuel.
Figure
Value
DRY MASS
740 kg
FULL MASS
4940 kg
COST
140 cr
STORES OXYGEN
504 u · 2520 kg
STORES METHANE
336 u · 1680 kg
DRAG NOSE-ON
1.0× (blunt)
HEAT EXPOSURE
1.45×
BODY LIFT CL
0.25
MAX TEMP
1300 K
MAX G
20 g
IMPACT
16 m/s
BLAST
120 kN · 3.8 m
BLAST FULL
1170 kN · 23 m
NODES
2
Every figure above is quoted at 8 m across the top, 4 m across the bottom and 3 m tall. Mass, price and fuel all scale with the cone's volume, so an adapter with both ends at 8 m holds what a Fuel Tank L holds per metre, and one with both ends at 4 m holds what a Fuel Tank holds: it never out-carries the tank beside it.
It stacks top and bottom, the two points on the axis whatever the widths, and offers no side rails: a sloped flank has no line a radial part could slide along. It carries fuel and thruster propellant through, and takes a Fuel line.
It has no actions to tap. Its properties are three sliders, hangar only: Length from 32 to 128 (2 m to 8 m), Top width and Bottom width each from 32 to 128 (2 m to 8 m). Set the wide end to match the wide stage and the narrow end to the narrow one, either way up: see Set an adapter's widths.
Pairs with a Fuel Tank L on its wide end and a Fuel Tank, pod or Separator on its narrow one. Instead of it, a narrow part can sit straight on a wide one, but the step then catches the air and shields nothing.
XT-1 Xenon Tank
Part · Tanks · sold by Ion Propulsion
A stretchable tank of xenon for an Ion Engine: pressurised bottles in a frame, light for what they hold. It resizes like the Fuel Tank, on a shorter base.
Figure
Value
DRY MASS
12 kg
FULL MASS
92 kg
COST
250 cr
STORES XENON
80 u · 80 kg
DRAG NOSE-ON
1.0× (blunt)
HEAT EXPOSURE
1.45×
MAX TEMP
1600 K
MAX G
20 g
IMPACT
14 m/s
BLAST
20 kN · 1.6 m
BLAST FULL
40 kN · 3.5 m
NODES
4
It stacks top and bottom, and offers a rail along each side for radial parts.
It has no actions to tap. Its only property is a Length slider, from 24 to 128, hangar only.
Pairs with an Ion Engine anywhere on the same ship: at its base length it feeds one for about 27 minutes of full thrust. Instead of it, a Cargo Bay can carry some xenon, at about half the load for its weight.
XT-8 Xenon Tank
Part · Tanks · sold by Wide Ion Propulsion
The XT-1 at 8 m: eight times the xenon per metre, on a slightly lighter frame for what it holds.
Figure
Value
DRY MASS
88 kg
FULL MASS
728 kg
COST
1900 cr
STORES XENON
640 u · 640 kg
DRAG NOSE-ON
1.0× (blunt)
HEAT EXPOSURE
1.45×
MAX TEMP
1600 K
MAX G
20 g
IMPACT
14 m/s
BLAST
80 kN · 3.1 m
BLAST FULL
240 kN · 9.4 m
NODES
4
It stacks top and bottom, and offers a rail along each side for radial parts.
It has no actions to tap. Its only property is a Length slider, from 48 to 256, hangar only.
Pairs with an Ion Engine L, which it feeds for about 55 minutes at its base length. Instead of eight XT-1 tanks, in one part.
