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Newest meanings

7   12

powerpack


Pre-combustion power/flow generation assembly (turbopump etc.)
Source: reddit.com

7   9

methalox


Portmanteau: methane/liquid oxygen mixture
Source: reddit.com

5   10

hypergolic


A set of two substances that ignite when in contact
Source: reddit.com

5   12

electrolysis


Application of DC current to separate a solution into its constituents (for example, water to hydrogen and oxygen)
Source: reddit.com

8   9

deep throttling


Operating an engine at much lower thrust than normal
Source: reddit.com

7   9

cryogenic


Very low temperature fluid; materials that would be gaseous at room temperature/pressure
Source: reddit.com

7   8

autogenous


(Of a propellant tank) Pressurising the tank using boil-off of the contents, instead of a separate gas like helium
Source: reddit.com

10   6

ablative


Material which is intentionally destroyed in use (for example, heatshields which burn away to dissipate heat)
Source: reddit.com

9   9

Starlink


SpaceX's world-wide satellite broadband constellation
Source: reddit.com

7   8

Sabatier


Reaction between hydrogen and carbon dioxide at high temperature and pressure, with nickel as catalyst, yielding methane and water
Source: reddit.com

6   12

Jargon Definition Raptor


Methane-fueled rocket engine under development by SpaceX, see ITS
Source: reddit.com

8   8

VTOL


Vertical Take-Off and Landing
Source: reddit.com

7   9

TWR


Thrust-to-Weight Ratio
Source: reddit.com

0   0

SSTO


Single Stage to Orbit
Source: reddit.com

0   0

SSP


Space-based Solar Power
Source: reddit.com

0   1

SLS


Space Launch System heavy-lift
Source: reddit.com

1   1

SLC-40


Space Launch Complex 40, Canaveral (SpaceX F9)
Source: reddit.com

1   1

RUD


Rapid Unplanned Disassembly
Source: reddit.com

1   1

RTLS


Return to Launch Site
Source: reddit.com

1   1

RTG


Radioisotope Thermoelectric Generator
Source: reddit.com

1   1

RP-1


Rocket Propellant 1 (enhanced kerosene)
Source: reddit.com

0   0

RFP


Request for Proposal
Source: reddit.com

0   1

RD-180


RD-series Russian-built rocket engine, used in the Atlas V first stage
Source: reddit.com

0   1

RCS


Reaction Control System
Source: reddit.com

0   1

PICA-X


Phenolic Impregnated-Carbon Ablative heatshield compound, as modified by SpaceX
Source: reddit.com

1   1

ORSC


Oxidizer-Rich Staged Combustion
Source: reddit.com

1   1

NRO


(US) National Reconnaissance Office
Source: reddit.com

0   1

NERVA


Nuclear Engine for Rocket Vehicle Application (proposed engine design)
Source: reddit.com

1   1

MRO


Mars Reconnaisance Orbiter
Source: reddit.com

1   0

MENA


Middle East and North Africa, Morocco to Iran
Source: reddit.com

0   1

MCT


Mars Colonial Transporter (see ITS)
Source: reddit.com

0   0

LZ


Landing Zone
Source: reddit.com

0   1

LOX


Liquid Oxygen
Source: reddit.com

1   1

LOV


Loss Of Vehicle
Source: reddit.com

1   1

LOS


Loss of Signal
Source: reddit.com

0   0

LOC


Loss of Crew
Source: reddit.com

0   0

LES


Launch Escape System
Source: reddit.com

0   0

LEO


Low Earth Orbit (180-2000km)
Source: reddit.com

0   0

LAS


Launch Abort System
Source: reddit.com

0   0

L5


"Trojan" Lagrange Point 5 of a two-body system, 60 degrees behind the smaller body
Source: reddit.com



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