Abbreviations and acronyms

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This page lists many abbreviations, acronyms and initalisms that are used frequently to communicate more quickly, but can confuse new players or players who are not familiar with them.

Game terms

HKO
High Kerbin Orbit
KSP
Kerbal Space Program!
LKO
Low Kerbin Orbit
SA
Sub-Assembly (in VAB/SPH, rare)
SAS
Stability Augmentation System or (jokingly) Sickness Avoidance System
SPH
Space Plane Hangar
VAB
Vehicle Assembly Building

Common terms

Ap
Apoapsis, highest point in an orbit.
CM
Command Module, a transfer ship that delivers a Lander Module to orbit around some body, then waits there and takes it completely or only the crew home again. Not to be confused with command modules.
dV
Delta-V
ISP
Specific impulse, a value where the higher one is more fuel efficient.
LM
Lander Module, paired with a Command Module and which lands on the body.
Pe
Periapsis, lowest point in an orbit.
SoI
Sphere of influence, which are the frames of reference. The trajectory in the current sphere of influence is shown blue on the map view.
SRB
Solid rocket booster
SSTO
Single-stage-to-orbit
TSTO
Two-stage-to-orbit
VTOL
Vertical take off and landing, usually performed by rockets
RCS
Reaction Control System

Popular mods

B9
B9 Aerospace
DRE
Deadly ReEntry
FAR
Ferram Aerospace Research
KAS
Kerbal Attachment System
KER
Kerbal Engineer Redux
KIDS
Kerbal Isp Difficulty Scaler
RSS
Real Solar System

See also