solid-propellant motor
- noun
- Specialized
- The missile is powered by a solid-propellant motor that ensures rapid ignition and acceleration.
Examples
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Engineers chose a solid-propellant motor for its reliability and simplicity in design.
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NASA uses a solid-propellant motor for its space missions.
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A solid-propellant motor requires careful storage because the fuel is cast directly into the casing.
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The solid-propellant motor was tested successfully last week.
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The rocket uses a solid-propellant motor that provides powerful thrust during launch.
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For the satellite launch, engineers selected a solid-propellant motor due to its low maintenance needs.
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A solid-propellant motor allows for a simpler design compared to liquid-fueled engines.
Synonyms
A machine that makes a push by throwing out its own fuel very fast for spaceships or missiles
An engine that burns solid fuel to push a vehicle into the sky
Surface Forms
Morphology
solid-propellant + motor
The phrase is compositionally transparent: it denotes a motor that uses a solid propellant (solid + propellant) and follows a regular modifier + noun pattern, so the overall meaning can be inferred from the parts. Although technical, a B1 learner who knows the constituents ('solid', 'propellant', 'motor') would reasonably deduce it refers to a motor powered by a solid fuel.
Etymology
Solid-propellant motor comes from the idea that the engine uses a solid propellant — a hard block of 'fuel' placed inside the motor. Imagine a candle burning inside a tube to 'push' the rocket; that's why the name means a rocket engine that carries and burns its solid 'fuel'.