Home-Made Liquid-Fuel Rocket Engine

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SUMMARY

The discussion centers on building a small liquid-fueled rocket engine, with a focus on using unleaded gasoline as fuel combined with hydrogen peroxide (H2O2) as an oxidizer. The participant expresses interest in the potential benefits of H2O2, particularly its density, which could allow for a smaller fuel tank and improved mass ratio. However, the conversation emphasizes the inherent dangers of liquid-fueled rockets and the necessity of consulting experienced individuals or organizations, such as the National Association of Rocketry (NAR), for guidance and safety information.

PREREQUISITES
  • Understanding of liquid-fueled rocket engine design
  • Knowledge of specific impulse calculations
  • Familiarity with safety protocols for handling hydrogen peroxide
  • Basic principles of rocket propulsion and mass ratios
NEXT STEPS
  • Research the specific impulse of gasoline and hydrogen peroxide combinations
  • Learn about the safety measures for handling H2O2, including MSDS guidelines
  • Investigate local chapters of the National Association of Rocketry (NAR) for mentorship
  • Study the engineering requirements for constructing a liquid-fueled rocket engine
USEFUL FOR

Aerospace enthusiasts, amateur rocket builders, and individuals interested in liquid-fueled propulsion systems will benefit from this discussion.

MattRob
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So I'm looking and researching to build a small liquid-fueled rocket engine. So far I think my choice for fuel is definitely unleaded gasoline because of it's high impulse when mixed with Gas-state O2 and how easy it is to obtain.
Previously, I was looking at using Hydrogen Peroxide (H202) for oxidizer and high-grade Kerosene for fuel.
Now I was wondering, I'm speculating on making a rocket for the engine if it goes well, and I was wondering If I could use H202 for oxidizer with Gasoline for fuel. The reason for this is that H202 is so much more dense than air, so the fuel tank could be much smaller and still keep a good mass ratio (R, ratio of fuel mass to rocket mass) (Or I wouldn't have to make the walls thick enough to hold high-pressure O2).

In particular, I was wondering where it would be possible to come up with the numbers, such as the Specific Impulse, burn Temp, burn pressure, etc. of this fuel combination?
 
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I think by now you have realized that this project is not very realistic. I mean, if containing liquid oxygen is a problem for you technically, then no other part of a liquid bipropellent rocket is within your capability.
 
Before you go any further, see if you can find a local chapter of the NAR: http://www.nar.org/

The folks there are who you want to be talking with.
 
Nugatory said:
The folks there are who you want to be talking with.
And a corollary is that an anonymous internet forum like this one is not where you should be getting your guidance. Any rocket bigger than a toy, and any liquid-fueled rocket, is inherently dangerous - you need to find people with experience and learn from them.

This thread is closed, not because there's anything wrong with it, but because we're not set up to offer you the help you need.
 

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