Difference between revisions of "48-7S "Spark" Liquid Fuel Engine"

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{{:48-7S "Spark" Liquid Fuel Engine/Box}}
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The '''48-7S "Spark" Liquid Fuel Engine''' is a [[liquid fuel engine]] for small craft.
 
 
 
== Product description ==
 
{{Quote
 
|The 48-7S may be small, but it packs quite a punch for its size. This little engine is a testament to how larger does not always means more advanced, at least according to Rockomax's marketing department. The box it comes in is pretty cool, in any case.
 
|manufacturer=RMC}}
 
 
 
== Usage ==
 
The Spark is a [[Radial size|size 0]] engine, typically placed on the bottom of a stage. Its specific impulse and thrust-to-weight ratio are similar to the [[LV-T45 "Swivel" Liquid Fuel Engine]], and it can be used to serve a similar function. However, its unique size and mass make it a good upper stage engine; it has a reasonable specific impulse, and a low mass. By using a Spark instead of a heavier [[LV-909 "Terrier" Liquid Fuel Engine]], a vessel's reduced dry mass may allow for greater delta-V.
 
 
 
The [[24-77 "Twitch" Liquid Fuel Engine]] is the radial variant of the Spark. The Spark has greater thrust and efficiency, but is heavier and cannot be radially mounted.
 
 
 
== Variants ==
 
As of {{version|1.6}} this engine has three models that can be switched in the editor.
 
 
 
{{multiple image
 
|align=left
 
|width=200
 
|image1=48-7S_Shroud.png
 
|alt1=Shroud variant
 
|image2=48-7S_TrussMount.png
 
|alt2=TrussMount variant
 
|image3=48-7S_Bare.png
 
|alt3=Bare variant
 
|footer=The different variants of the engine
 
}}
 
{{clear|left}}
 
 
 
== Trivia ==
 
* The 48-7S "Spark" Liquid Fuel Engine was originally from the KSPX parts mod.
 
* Prior to {{version|1.7}}, due to its relatively high Isp and thrust to weight ratio, the 48-7S was remarkably capable in ascent, transfer, and lander roles and had a thrust to weight ratio second only to the [[Kerbodyne KR-2L Advanced Engine]] and the [[S3 KS-25x4 Engine Cluster]].
 
 
 
== Changes ==
 
;[[1.7.1]]
 
* Atmospheric Isp increased from 260 to 265
 
;[[1.7]]
 
* Mass increased from 0.1 to 0.13
 
* Atmospheric Isp decreased from 270 to 260
 
;[[1.6]]
 
* New model and texture
 
* Added 3 variants
 
;[[1.2]]
 
* Thrust increased to 20 kN and 320 specific impulse in vacuum.
 
* Cost increased from 200 to 240.
 
;[[1.0]]
 
* Thrust decreased to 18kN.
 
;[[0.22]]
 
* Thrust increased from 20 to 30 kN, description changed.
 
;[[0.21]]
 
* Initial release
 
 
 
{{Parts}}
 
[[Category:Liquid fuel engines]]
 

Revision as of 22:30, 17 November 2021

sparkz