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RD-120: History, Technological derivatives & Overview

The RD-120 (Russian: Ракетный Двигатель-120, romanized: Raketnyy Dvigatel-120, lit. 'Rocket Engine 120', GRAU index: 11D123) is a liquid upper stage rocket engine burning RG-1 (refined kerosene) and LOX in an oxidizer rich staged combustion cycle with an O/F ratio of 2.6. It is used in the second stage of the Zenit family of launch vehicles. It has a…

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RD-120 topic overview

The analysis highlights History, Technological derivatives and Overview as prominent areas in the source structure around RD-120.

Related topics
63
Source areas
4
Connected nodes
67
Extracted relationships
151
Concept neighborhoods
25
Bridge connections
67

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 21 topics
History · 20 topics
Technological derivatives · 14 topics
Versions · 8 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Application
Upper stage
Burn time
315 seconds
Chamber pressure
Standard: 162.8 bar (16.28 MPa) Uprated: 178.1 bar (17.81 MPa)
Country of origin
Soviet Union · Russia
Cycle
Staged combustion cycle
Designer
NPO Energomash, V.K.Chvanov, V.P. Radovsky

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

History

Versions

Technological derivatives

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How RD-120 connects Entity context

The extracted context around RD-120 shows recurring relationship patterns in the source. For example, RD-120 → Cyclone-4M SLV, GRAU Index, Had, It, LNG, LOX, Makeyev Rocket Design Bureau, Methane, Original, Project, Proposed, RD-120K, RD-120M, RD-120U, RD-146RD-182, RD-182, RD-182M, RD-263, RD-870, Riksha Another extracted example is RD-120 → And, Buran, But, By April, During, Energomash, Government, In, In February, January, KBKhA, NPO Energomash, On March, One, Proton, RD-0120, RD-123, RD-130, RD-170, RD-171. Use these groups to spot repeated connection types before inspecting the individual relationships.

RD-120

Top relations

related to Versions · 34
RD-120 → Cyclone-4M SLV, GRAU Index, Had, It, LNG, LOX, Makeyev Rocket Design Bureau, Methane, Original, Project, Proposed, RD-120K, RD-120M, RD-120U, RD-146RD-182, RD-182, RD-182M, RD-263, RD-870, Riksha
related to history · 27
RD-120 → And, Buran, But, By April, During, Energomash, Government, In, In February, January, KBKhA, NPO Energomash, On March, One, Proton, RD-0120, RD-123, RD-130, RD-170, RD-171
related to SCE-200 · 24
RD-120 → According, Cooperation, Economic Development, February, Framework Agreement, Given, Government, India, Indian, Indian-Ukrainian, Indians, Jasmine, March, On June, Outer Space, Peaceful Uses, RD-810, Republic, Since, The
related to RD-801 and RD-810 · 16
RD-120 → LOX, Mayak, Not, NPO Energomash, RD-8, RD-843, RD-855, RD-861, The, Tsyklon-4, Ukraine, Vega's AVUM, While, While Yuzhnoye, Yuzhmash, Yuzhnoye
see also · 11
RD-120 → Chinese, Engine, Indian, Launch, NPO Energomash, RD-810, SCE-200, Ukrainian, YF-100, Yuzhmash, Zenit
related to YF-100 and YF-115 · 9
RD-120 → As, But, Chinese, During, Indians, RD-810, This, YF-100, YF-115
related to Technological derivatives · 7
RD-120 → Chinese YF-100, Indian SCE-200, Not, RD-810, The Soviet/Russian RD-170, The Ukrainian RD-801, YF-115
related to RD-170 family · 6
RD-120 → As, History, NPO Energomash, RD-123, RD-170, So
Country of origin · 2
RD-120 → Russia, Soviet Union
Application · 1
RD-120 → Upper stage

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

engine stage npo energomash second development combustion zenit first launch engines version lox family staged rd-810 yuzhmash project program kerosene

RD-120 relationships Subject–Predicate–Object triples

TTTA extracted 151 structured relationships around RD-120. Examples in this analysis include RD-120 → Application → Upper stage and RD-120 → Burn time → 315 seconds. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
RD-120ApplicationUpper stage1.00infobox
RD-120Burn time315 seconds1.00infobox
RD-120Chamber pressureStandard: 162.8 bar (16.28 MPa) Uprated: 178.1 bar (17.81 MPa)1.00infobox
RD-120Country of originSoviet Union1.00infobox
RD-120Country of originRussia1.00infobox
RD-120CycleStaged combustion cycle1.00infobox
RD-120DesignerNPO Energomash, V.K.Chvanov, V.P. Radovsky1.00infobox
RD-120Diameter1.95 m (6.4 ft)1.00infobox
RD-120Dry mass1,125 kg (2,480 lb)1.00infobox
RD-120Length3.87 m (12.7 ft)1.00infobox
RD-120ManufacturerYuzhmash1.00infobox
RD-120PropellantLOX / RP-11.00infobox
RD-120Specific impulse, vacuum350 s (3.4 km/s)1.00infobox
RD-120StatusOperational1.00infobox
RD-120Thrust, vacuumStandard: 834 kN (187,000 lbf) Uprated: 912 kN (205,000 lbf)1.00infobox
RD-120Thrust-to-weight ratioStandard: 75.55[note 1] Uprated: 82.66[note 2]1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around RD-120 bring nearby vocabulary together. In this analysis, examples include Stage, First and Second. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • RD-120
    • Stage
    • First
    • Second
    • Rd-810
    • Energomash
    • Npo
    • Chinese
    • Considered
    • Propellant
    • Family
    • Zenit
    • Version
  • rd-120
    • Stage
    • First
    • Second
    • Rd-810
    • Energomash
    • Npo
    • Chinese
    • Considered
    • Propellant
    • Family
    • Zenit
    • Version
  • upper stage
    • Second
    • First
    • Launch
    • Propellant
    • Vehicle
    • Zenit
    • Version
    • Developed
    • Staged
    • Energomash
    • Chamber
    • Thrust
  • rocket engine
    • Launch
    • Combustion
    • Rd-120
    • Staged
    • Development
    • Energomash
    • Project
    • Program
    • Second
    • Npo
    • Kerosene
    • Rocket
  • oxidizer rich staged combustion
    • Staged
    • Kerosene
    • Chamber
    • Propellant
    • Program
    • Energomash
    • Npo
    • Engine
    • Yf-115
    • Yf-100
    • Stage
    • Yuzhmash
  • vernier engine
    • Combustion
    • Rd-120
    • Staged
    • Development
    • Energomash
    • Program
    • Second
    • Npo
    • Kerosene
    • Rocket
    • Stage
    • Launch
  • npo energomash
    • Npo
    • Propellant
    • Staged
    • Rd-170
    • Yuzhmash
    • Engine
    • Development
    • Second
    • Yuzhnoye
    • Rd-120
    • Kerosene
    • Stage
  • sea launch
    • Vehicle
    • Project
    • Lox
    • Rocket
    • Used
    • Stage
    • Zenit
    • Development
    • Second
    • Thrust
    • Propellant
    • Proposed

Connections between topic areas Semantic bridges

For RD-120, one of the stronger structural bridges in this analysis connects RD-120 with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
RD-120Overview · splits 46 ⟂ 22
RD-120History · splits 47 ⟂ 21
RD-120Technological derivatives · splits 53 ⟂ 15
RD-120Versions · splits 59 ⟂ 9

Map overview Semantic statistics

RD-120

Nodes68
Edges67
Triples151
Avg. degree1.97
Density0.029412
Components1

Source & methodology

TTTA analyzes the structure around RD-120 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Technological derivatives & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — RD-120 · EN edition · Analysis: TopicsToTalkAbout

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