S3 KS-25 "Vector" Liquid Fuel Engine

S3 KS-25 "Vector" Liquid Fuel Engine
Liquid fuel engine by Kerbodyne
Radial size		Radial mounted, Small
Cost	(total)	18 000.00
Mass	(total)	4.000 t
Drag		0.2
Max. Temp.		2000 K
Impact Tolerance		22 m/s
Research		Very Heavy Rocketry
Unlock cost		115 000
Since version		1.0.5
Part configuration		SSME.cfg
Maximum thrust	(1 atm)	936.51 kN
	(vacuum)	1 000.00 kN
Isp	(1 atm)	295 s
	(vacuum)	315 s
Fuel consumption		64.74 /s
Thrust vectoring		10.5 °
Electricity generated		3.0 ⚡/s
Testing Environments
On the surface		Yes
In the ocean		Yes
On the launchpad		Yes
In the atmosphere		Yes
Sub-orbital		Yes
In an orbit		Yes
On an escape		Yes
Docked		No
Test by staging		Yes
Manually testable		Yes

The S3 KS-25 "Vector" Liquid Fuel Engine is a liquid fuel engine with a single nozzle. Despite being a size 1 part, it has a thrust and mass in between that of the size 2 Skipper and Mainsail engines. It has a relatively high thrust to weight ratio, moderate Isp, and extremely large gimbal range. More unusually, it is surface-attachable (like the Mk-55 "Thud"). These advantages are somewhat offset by its comparatively high tech requirements and cost.

The KS-25 is a reference to the Space Shuttle Main Engines which are also named RS-25. This is likewise shown in that the part files are named variants of "SSME".

Product description

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Kerbodyne's flagship engine, the KS-25 excels as a first stage engine through its high thrust-to-weight ratio and exceptional sea level efficiency. Kerbodyne engineers achieved this by running the engine in a staged combustion cycle and at extremely high chamber pressures. Special new alloys had to be invented to suppress the engine's tendency to become a bomb. The single version is designed with very durable components and high reusability, as well as higher gimbal range, but because of that is also heavier than its expendable counterpart used in first stage clusters. — Kerbodyne

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Changes

1.0.5

• Initial release