arc-jet engine: meaning, definition, pronunciation and examples
Very Low (Technical)Technical/Specialised
Quick answer
What does “arc-jet engine” mean?
A type of rocket engine that uses an electric arc to heat a propellant into plasma, which is then expelled through a nozzle to create thrust.
Audio
Pronunciation
Definition
Meaning and Definition
A type of rocket engine that uses an electric arc to heat a propellant into plasma, which is then expelled through a nozzle to create thrust.
An advanced propulsion technology used primarily in spacecraft for efficient, low-thrust, long-duration manoeuvres, such as orbit adjustments or deep-space missions.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Spelling of related words may differ (e.g., British 'manoeuvre' vs. American 'maneuver').
Connotations
Technical, specialised, futuristic. No regional connotative differences.
Frequency
Exclusively found in aerospace engineering contexts. No frequency difference between regions.
Grammar
How to Use “arc-jet engine” in a Sentence
The [spacecraft] uses an arc-jet engine for [propulsion].Scientists are developing [adjective] arc-jet engines.Vocabulary
Collocations
Examples
Examples of “arc-jet engine” in a Sentence
adjective
British English
- The arc-jet propulsion system was highly efficient.
- We reviewed the arc-jet engine test data.
American English
- The arc-jet propulsion system was highly efficient.
- We analyzed the arc-jet test data.
Usage
Meaning in Context
Business
Used in contracts, proposals, or R&D reports within the aerospace and defence sectors.
Academic
Used in engineering papers, physics journals, and specialised aerospace textbooks.
Everyday
Virtually never used in everyday conversation.
Technical
The primary context. Discussed in spacecraft design, propulsion system specifications, and mission planning.
Vocabulary
Synonyms of “arc-jet engine”
Strong
Neutral
Weak
Vocabulary
Antonyms of “arc-jet engine”
Watch out
Common Mistakes When Using “arc-jet engine”
- Miswriting as 'arch-jet engine'.
- Confusing it with a 'ramjet' or 'turbojet' engine, which are for atmospheric flight.
- Using it as a verb (e.g., 'to arc-jet').
FAQ
Frequently Asked Questions
No. Both are electric propulsion, but an ion engine uses electrostatic forces to accelerate ions, while an arc-jet uses an electric arc to thermally heat a neutral propellant into plasma.
Primarily on communication and weather satellites for station-keeping (maintaining their correct orbit) and on some scientific probes for trajectory corrections.
They offer higher efficiency (specific impulse) than chemical rockets for low-thrust applications and are simpler and more robust than some other electric propulsion types like ion thrusters.
Common propellants include hydrazine (N2H4), ammonia (NH3), or hydrogen. The propellant is chosen for its favourable thermal properties when turned into plasma.
A type of rocket engine that uses an electric arc to heat a propellant into plasma, which is then expelled through a nozzle to create thrust.
Arc-jet engine is usually technical/specialised in register.
Arc-jet engine: in British English it is pronounced /ˈɑːk ˌdʒɛt ˈɛn.dʒɪn/, and in American English it is pronounced /ˈɑːrk ˌdʒɛt ˈen.dʒɪn/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. The term is purely technical.”
Learning
Memory Aids
Mnemonic
Think of an ARC welder heating metal into a glowing state; an ARC-JET heats fuel into plasma and JETS it out the back.
Conceptual Metaphor
A 'Controlled Lightning Bolt Engine' (arc as lightning, jet as exhaust).
Practice
Quiz
What is the primary energy source for heating the propellant in an arc-jet engine?