Why only rocket engines can operate in space Select the key reason rockets are the only engines that can propel vehicles in outer space where there is no atmosphere. Choose the correct option.
Mechanical Engineering
Compressors, Gas Dynamics and Gas Turbines
Difficulty: Easy
Choose an option
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AThey can generate very high thrust
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BThey have high propulsion efficiency
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CThey can work on several different fuels
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DThey are not air-breathing engines
Answer
Correct Answer: They are not air-breathing engines
Explanation
Given data
- Space environment lacks atmospheric oxygen.
Concept/ApproachRocket engines carry both fuel and oxidizer and therefore do not rely on atmospheric air. Air-breathing engines (turbojets, turbofans, ramjets) cannot operate in vacuum due to lack of oxygen mass flow.
Final AnswerThey are not air-breathing engines