Liquid Fueled Engine: A New Perspective

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Discussion Overview

The discussion revolves around the concept of integrating liquid oxygen (LOx) into jet engine designs, exploring the potential benefits and challenges of such an approach. Participants examine the differences between jet and rocket engines, the implications of using LOx, and the feasibility of new injector systems. The conversation includes technical considerations, historical context, and personal insights from participants with varying levels of expertise.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose the idea of injecting liquid oxygen into a jet engine to enhance performance, suggesting a manifold or ring design for metered injection.
  • Others express confusion about the initial proposal, questioning the clarity and technical feasibility of the ideas presented.
  • A participant mentions the potential benefits of liquid oxygen in specific flight profiles and raises the question of extending air-breathing capabilities at higher speeds.
  • Concerns are raised about the increased fuel requirements due to the added mass of carrying liquid oxygen, suggesting that this could negate some benefits.
  • One participant indicates they are still in the process of developing their ideas and acknowledges their lack of technical background, relying on self-study.
  • Another participant encourages research into existing hybrid designs that combine jet and rocket engine principles, highlighting the importance of understanding the fundamental differences in oxygen usage.

Areas of Agreement / Disagreement

Participants express a range of views, with some supporting the exploration of liquid oxygen in jet engines while others challenge the clarity and technical soundness of the proposals. The discussion remains unresolved, with no consensus on the feasibility or effectiveness of the suggested designs.

Contextual Notes

Participants note the importance of understanding the fundamental design differences between jet and rocket engines, as well as the implications of using liquid oxygen versus atmospheric oxygen. There are indications of missing technical details and assumptions that could affect the viability of the proposed ideas.

Who May Find This Useful

This discussion may be of interest to individuals exploring advanced propulsion systems, hybrid engine designs, and the integration of liquid oxygen in aerospace applications, as well as those studying the technical aspects of jet and rocket engines.

jmalitz
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I know that this has been talked about already, but from the responses, I feel the topic was not addressed to the fullest, but as we know a Jet engine is subject to the amount of O2, so i was looking at a earlier post about this topic. within the replies to that topic the rocket engine was talked about in reference to being the same idea, and i can see how that mistake can be made, but this idea being taking a standard jet engine and injecting liquid O2 alongside the intake would create several issues in itself. so let's take this idea in a new way, I was looking at this idea though the idea of removing the complete intake, then either a manifold or a ring/injector design, and metered amount could be fed into the engine itself.
 
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jmalitz said:
I know that this has been talked about already, but from the responses, I feel the topic was not addressed to the fullest, but as we know a Jet engine is subject to the amount of O2, so i was looking at a earlier post about this topic. within the replies to that topic the rocket engine was talked about in reference to being the same idea, and i can see how that mistake can be made, but this idea being taking a standard jet engine and injecting liquid O2 alongside the intake would create several issues in itself. so let's take this idea in a new way, I was looking at this idea though the idea of removing the complete intake, then either a manifold or a ring/injector design, and metered amount could be fed into the engine itself.
Sorry, but your post borders on word salad. There are flight profiles that benefit from liquid oxygen fed rocket engines. Are you trying to extend the air-breathing region to faster speeds with liquid O2 injection?
 
berkeman said:
Sorry, but your post borders on word salad. There are flight profiles that benefit from liquid oxygen fed rocket engines. Are you trying to extend the air-breathing region to faster speeds with liquid O2 injection?
so are you going to troll so i can block you or are you going to be constructive and further this idea
 
Whatever. Can you please answer my technical question? Your post was honestly very hard to decode. It wasn't bad at first, but I lost comprehension by the end. Perhaps you can clarify as you respond to my technical question.
 
sorry just been getting some flack on this idea, but the idea i was thinking about was removing the over all intake itself and though a manifold system or a ring system, more over the off engine manifold idea would be the best idea so we could mix a metered amount before it is injected into the engine itself
 
No worries. But can you address the technical question in my response? And can you post a drawing of what you are proposing? I'm having trouble visualizing the injection system for LOx you are proposing, and understanding what improvements you are proposing over the current systems. Thanks.
 
well I have just started to put this idea to paper, so working on drawings, and to tell the truth i am a psychology major, and have no real idea on the technical accept of this, so i am going with what i know and what i can teach my self though online searches, but a simple idea as a injector system on newer cars but still putting ideas on paper here
 
So start with reading about jet engines and rocket engines, and how oxygen figures into each fundamental design. You probably have already read that it's best to use O2 from the atmosphere for many engine regions, and that LOx is needed for rockets for their regions. If your goal is to come up with a hybrid design that crosses over the two rocket/jet regions, then you should look at previous designs for that. Have you found the history for those cross-over regions? :smile:
 
that is what i am doing, and learning as i go, and thank you and again sorry for the A hole reply, but liquid O2 was the the first idea that came into mind to remove any known factors from normal breathable air, but also the idea i had with the use of pure liquid O2 could in Idea reduce the fuel amount needed.
 
  • #10
jmalitz said:
but also the idea i had with the use of pure liquid O2 could in Idea reduce the fuel amount needed.
At the fundamental level, the energy in the fuel is converted to thrust.
So, if you bring your oxygen with you then you will need to burn more fuel to accelerate that extra mass.
 
  • #12
Find out how much air a conventional engine uses every second .
 
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  • #13
thank you for the input on this topic i have been working on the research
 

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