Compressing Air for Air Propelled Chair: What Alternatives?

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SUMMARY

The discussion centers on the feasibility of using compressed air for an air-propelled chair design. It concludes that utilizing a compressor to achieve the necessary flow rate for substantial thrust is impractical. Instead, the conversation suggests that traditional jet engines, which rely on burning fuel to generate thrust through high-velocity gas expulsion, are a more effective approach. Alternatives such as using water as a propellant are also mentioned, emphasizing the need for a more massive propellant for better thrust.

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  • Knowledge of compressor capabilities and limitations
  • Familiarity with Newton's third law of motion
  • Basic principles of propulsion and fluid dynamics
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Bunting
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Im currently drawing up plans for an air propelled chair (which ill probly never make :P). I was intending to pureply use air from the atmosphere, use some sort of compressor, to compress it, then send it flying out the back in order to displace the chair. However. I don't know if there are such machines available. I guess you get compressed air in cylinders for a reason, but i don't know what that reason is!

If I cannot use air, what would you suggest ?

Thanks!
 
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What you intend to design is a jet engine. The reason it will be difficult to do with a compressor is simple: it'll be nigh impossible to build a compressor capable of the flow rate (volume per second) needed to achieve any substantial thrust.

Most people design jet engines to use a fuel -- the fuel burns, releasing large amounts of gas. The gas then exits a nozzle, generating thrust via Newton's third law.

- Warren
 
air propelled chair
You mean helicopter? Or perhaps hoovercraft?

For better thrust, you need something more massive. Water perhaps? But I think most efficient propellant would be your leg :wink:
 

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