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YF-73: History & Overview

The YF-73 was China's first successful cryogenic liquid hydrogen fuel and liquid oxygen oxidizer gimballed engine. It was used on the Long March 3 H8 third stage, running on the simple gas generator cycle and with a thrust of 44.15 kilonewtons (9,930 lbf). It had four hinge mounted nozzles that gimbaled each on one axis to supply thrust vector control…

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YF-73 topic overview

The analysis highlights History and Overview as prominent areas in the source structure around YF-73.

Related topics
11
Source areas
2
Connected nodes
13
Extracted relationships
31
Related term clusters
10
Bridge connections
13

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 · 10 topics
History · 1 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.

Associated LV
Long March 3
Burn time
800 seconds (13 min)
Chamber
4
Chamber pressure
2,590 kPa (25.9 bar)
Country of origin
China
Cycle
Gas-generator

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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

For the semantics nerds

You can skip this section if you’re here for content ideas and keyword inspiration.

Advanced semantic analysis

How YF-73 connects Entity context

The extracted context around YF-73 shows recurring relationship patterns in the source. For example, YF-73 → April, Beijing Aerospace Propulsion Institute, China, Chinese, Dong Fang Hong, In March, In October, January, May, Project, YF-75 Another extracted example is YF-73 → Long March 3. Use these groups to spot repeated connection types before inspecting the individual relationships.

YF-73

Top relations

related to history · 11
YF-73 → April, Beijing Aerospace Propulsion Institute, China, Chinese, Dong Fang Hong, In March, In October, January, May, Project, YF-75
Associated LV · 1
YF-73 → Long March 3
Burn time · 1
YF-73 → 800 seconds (13 min)
Chamber · 1
YF-73 → 4
Chamber pressure · 1
YF-73 → 2,590 kPa (25.9 bar)
Country of origin · 1
YF-73 → China
Cycle · 1
YF-73 → Gas-generator
Designer · 1
YF-73 → Beijing Aerospace Propulsion Institute
Diameter · 1
YF-73 → 2.2 metres (7 ft 3 in)
Dry mass · 1
YF-73 → 236 kilograms (520 lb)

Important terminology

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

Important terminology

hydrogen oxygen engine thrust yf-75 used gas generator liquid march lbf restart long h8 third stage cycle 44 15 kilonewtons

YF-73 relationships Subject–Predicate–Object triples

TTTA extracted 31 structured relationships around YF-73. Examples in this analysis include YF-73 → Associated LV → Long March 3 and YF-73 → Burn time → 800 seconds (13 min). The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
YF-73Associated LVLong March 31.00infobox
YF-73Burn time800 seconds (13 min)1.00infobox
YF-73Chamber41.00infobox
YF-73Chamber pressure2,590 kPa (25.9 bar)1.00infobox
YF-73Country of originChina1.00infobox
YF-73CycleGas-generator1.00infobox
YF-73DesignerBeijing Aerospace Propulsion Institute1.00infobox
YF-73Diameter2.2 metres (7 ft 3 in)1.00infobox
YF-73Dry mass236 kilograms (520 lb)1.00infobox
YF-73First flight1984-01-291.00infobox
YF-73Last flight2000-05-261.00infobox
YF-73Length1.44 metres (4 ft 9 in)1.00infobox
YF-73ManufacturerChina Academy of Launch Vehicle Technology (CALT)1.00infobox
YF-73Mixture ratio5.001.00infobox
YF-73Nozzle ratio401.00infobox
YF-73PropellantLiquid oxygen / Liquid hydrogen1.00infobox
YF-73Specific impulse, vacuum420 seconds (4.1 km/s)1.00infobox
YF-73StatusRetired1.00infobox
YF-73SuccessorYF-751.00infobox
YF-73Thrust, vacuum44.15 kilonewtons (9,930 lbf)1.00infobox

Related concept clusters Related term clusters

The concept neighborhoods around YF-73 bring nearby vocabulary together. In this analysis, examples include Seconds, Yf-75 and Yf-73. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • liquid hydrogen
    • Oxygen
    • Hydrogen
    • Liquid
    • Yf-73
    • Aerospace
    • Beijing
    • Engine
    • Institute
    • Propulsion
    • References
    • China
    • Cycle
  • liquid oxygen
    • Hydrogen
    • Oxygen
    • Yf-73
    • Aerospace
    • Beijing
    • Engine
    • Institute
    • Propulsion
    • References
    • China
    • Cycle
    • H8
  • long march 3
    • Cycle
    • H8
    • Kilonewtons
    • Lbf
    • Stage
    • Third
    • China
    • March
    • Thrust
    • Aerospace
    • Beijing
    • Institute
  • yf-75
    • Lb
    • Replaced
    • Aerospace
    • Beijing
    • Institute
    • Propulsion
    • References
    • Capable
    • China
    • Cycle
    • H8
    • Kilonewtons
  • gimballed engine
    • Yf-73
    • China
    • Liquid
    • Hydrogen
    • March
    • Oxygen
    • Aerospace
    • Beijing
    • Institute
    • Propulsion
    • References
    • Cycle
  • gas generator
    • Generator
    • Cycle
    • H8
    • Kilonewtons
    • Lbf
    • Long
    • Stage
    • Third
    • Hydrogen
    • March
    • Oxygen
    • Thrust
  • cryogenic
    • Yf-73
    • Engine
    • China
    • Liquid
    • Hydrogen
    • March
    • Oxygen
  • gimbaled
    • Capable
    • Restart
    • Thrust

Connections between topic areas Semantic bridges

For YF-73, one of the stronger structural bridges in this analysis connects YF-73 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
YF-73 — Overview · splits 3 ⟂ 11

Map overview Semantic statistics

YF-73

Nodes14
Edges13
Triples31
Avg. degree1.86
Density0.142857
Components1

Source & methodology

TTTA analyzes the structure around YF-73 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — YF-73 · EN edition · Analysis: TopicsToTalkAbout

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