Difference between revisions of "Radial size"

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* '''Mk2.''' With its side chines, this spaceplane size is reminiscent of the real-world [[wikipedia:Lockheed SR-71 Blackbird|Lockheed SR-71 Blackbird]]. It is between the 1.25m and 2.5m sizes in cross-sectional area. These parts feature a small amount of lift.
 
* '''Mk2.''' With its side chines, this spaceplane size is reminiscent of the real-world [[wikipedia:Lockheed SR-71 Blackbird|Lockheed SR-71 Blackbird]]. It is between the 1.25m and 2.5m sizes in cross-sectional area. These parts feature a small amount of lift.
 
* '''Mk3.''' Reminiscent of the real-world [[wikipedia:Space Shuttle|Space Shuttle]]. The cross-sectional area is similar to the 3.75m rocket size.
 
* '''Mk3.''' Reminiscent of the real-world [[wikipedia:Space Shuttle|Space Shuttle]]. The cross-sectional area is similar to the 3.75m rocket size.
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=== Adapters ===
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{| class = "wikitable"
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! colspan = "2" rowspan = "2" | !! colspan = "7" | Fore size
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|-
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! Nose !! Tiny !! Small, Mk1 !! Mk 2 !! Large !! Mk 3 !! Extra Large
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|-
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! rowspan = "7" | Aft size
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! Tail
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| n/a
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|
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|-
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! Tiny
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| 
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|-
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! Small, Mk1
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| 
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| [[NCS Adapter]]
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|
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| [[Mk2 Bicoupler]] (2)
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|-
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! Mk2
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| [[Mk2 to 1.25m Adapter]]<br/>[[Mk2 to 1.25m Adapter Long]]
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|-
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! Large
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| [[C7 Brand Adapter - 2.5m to 1.25m]]<br/>[[C7 Brand Adapter Slanted - 2.5m to 1.25m]]
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| [[2.5m to Mk2 Adapter]]
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|-
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! Mk3
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| [[Mk3 to Mk2 Adapter]]
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| [[Mk3 to 2.5m Adapter]]<br/>[[Mk3 to 2.5m Adapter Slanted]]
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| [[Mk3 to 3.75m Adapter]]
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|-
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! Extra Large
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== Assets ==
 
== Assets ==

Revision as of 07:14, 12 May 2015

Comparison of radial sizes with a Kerbal for scale. From top to bottom: Tiny (Size 0), Small, Large, and Extra Large (Size 3).

The radial size is the diameter or mounting position for most parts. If the mounting position is not radial, then the part is either round or one of two special forms. Such rectangular parts as the M-1x1 Structural Panel lack a radial size or it's a size to the next bigger diameter like the Probodobodyne QBE. Four radial sizes exist with varying names. The size scale looks like the internal definition as the Mk2 to size 1 Adapter uses this term and starts with 0 and many values in computer programming are starting from 0 rather than 1.

Any stackable part can be connected to any other stackable part. Matching radial sizes only serves to give a rocket a cleaner visual appearance, and several adapter parts exist to allow transitions between radial sizes while maintaining an unbroken surface.

Sizes

Radial size Fuel per m Typical crash tolerance Typical maximum temperature
Rocket fuel Liquid fuel Monopropellant
Tiny / 0.625m 115 n/a 213 6 m/s 2000°
Small / 1.25m 213 n/a 438 6 m/s 2000°
Large / 2.5m / Rockomax 853 n/a 750 6 m/s 2000°
Extra Large / 3.125m / Kerbodyne 1925 n/a n/a 6 m/s 2000°
Mk1 n/a 80 n/a 20 m/s 2000°
Mk2 213 213 213 40 m/s 2200°
Mk3 1000 1000 1000 50 m/s 2300°

Rocket

The typical mass ratio for rocket fuel is 9.

  • Tiny / 0.625m. Typically used for probes and nose electronics.
  • Small / 1.25m. The most common size, and the primary size available at the beginning of the game.
  • Large / 2.5m / Rockomax.
  • Extra Large / 3.75m / Kerbodyne.

Spaceplane

Spaceplane parts may carry either rocket fuel or liquid fuel. Compared to rocket parts they tend to have a poorer mass ratio (usually about 8), but better crash tolerance and maximum temperature.

  • Mk1. Like the 1.25m rocket size, this size is a cylinder. All inline air intakes are of this size, but there are no rocket fuel tanks.
  • Mk2. With its side chines, this spaceplane size is reminiscent of the real-world Lockheed SR-71 Blackbird. It is between the 1.25m and 2.5m sizes in cross-sectional area. These parts feature a small amount of lift.
  • Mk3. Reminiscent of the real-world Space Shuttle. The cross-sectional area is similar to the 3.75m rocket size.

Adapters

Fore size
Nose Tiny Small, Mk1 Mk 2 Large Mk 3 Extra Large
Aft size Tail n/a
Tiny
Small, Mk1 NCS Adapter Mk2 Bicoupler (2)
Mk2 Mk2 to 1.25m Adapter
Mk2 to 1.25m Adapter Long
Large C7 Brand Adapter - 2.5m to 1.25m
C7 Brand Adapter Slanted - 2.5m to 1.25m 		2.5m to Mk2 Adapter
Mk3 Mk3 to Mk2 Adapter Mk3 to 2.5m Adapter
Mk3 to 2.5m Adapter Slanted 		Mk3 to 3.75m Adapter
Extra Large

Assets

When creating assets, the correct diameter for a desired model can be found in the table below. The "meter scale" refers to the actual model's diameter, which is then typically scaled up via the default rescaleFactor of 1.25, to give the "actual" in-game diameter. Size scale is used to denote the standard when selecting a node size.

Conversion table between the different definitions
Name Size scale Meter scale Actual size Example
Tiny 0 0.5 m 0.625 m Rockomax 48-7S
Small 1 1 m 1.25 m LV-T30 Liquid Fuel Engine
Large 2 2 m 2.5 m Rockomax "Mainsail" Liquid Engine
Extra large 3 3 m 3.75 m Kerbodyne KR-2L Advanced Engine

As a special radial size Radial mounted appears. Parts like Rockomax 24-77 so lack general metric counterparts as to eliminate confusion.

Non-cylindrical sizes named “Mk2”, and “Mk3” exist and are used by fuselage parts intended for spaceplanes.

Additional sizes

Several addons add additional, usually larger, radial sizes which are roughly following the stock size scale. There are up to 9 meter parts in the B9 Aerospace mod and mods like Tweakscale can scale parts more freely.

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