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About Steel

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  1. Steel

    Amateur rocket to orbit

    No, but I think a hybrid is a much easier motor to work with. Gives you the benefits of throttling without the inherent difficulties of a liquid bi-prop engine (fuel mixing, two sets of plumbing e.t.c)
  2. Steel

    Amateur rocket to orbit

    I'd also suggest that a forum perhaps isn't the most efficient method of planning something like this. Maybe put a Slack channel (or similar) together with interested parties, then post periodic updates on progress here to update people and generate interest.
  3. Steel

    Amateur rocket to orbit

    Just my quick thoughts: If this gets to a serious point of asking for money from people, people will expect serious documentation. There are 1000's of people who have ideas for low cost rockets, but very few will have detailed sourcing plans, every single part designed, costed and sourced and a genuine plan a out how they'll build and fly a rocket. All of that stuff will be needed before anyone will even have the conversation about money. One other thing. With a project so complex, you have to factor in the fact that there will be a lot of testing involved, some of it destructive. I can almost guarantee the first attempt (as well as the second, third and maybe fourth) at designing and building some parts will fail, and that all needs to be factored into the project.
  4. Steel

    Amateur rocket to orbit

    7:1 for H2O2/RP-1 Also, why jellied?
  5. Steel

    SpaceX Discussion Thread

    LRO images have a resolution of about 100 m [1]. So the short answer to how much it would help is "not much". [1]
  6. Steel

    Making your own code

    I've only skimmed it, but this might answer some questions:
  7. Steel

    Stone-age laboratory

    I'm going to say getting clear glass of any kind would be almost impossible, let alone of high enough quality to make lenses.
  8. Photosynthesis is horribly inefficient, I think man-made solar panels are better by a factor of 10 or so.
  9. I'd hazard a guess that it's very fuel rich exhaust which is why it's so flamey
  10. Steel

    Orbex thread

    One thing I will say is that it's so good to finally see opportunities like this spring up somewhere other than the US.
  11. For those who might be interested, ESA have just launched the second year of the "Space Explorations Masters" Challenge [1]. This is essentially an idea generator competition whereby you can submit you ideas to solve key problems in the space industry for a chance to have funding and collaboration opportunities with big industrial players in the sector. Seems like an interesting opportunity for any of you who might have some creative ideas lurking in the back of your mind. [1]
  12. Electron degeracy pressure is a quantum effect as a result of the Pauli exclusion principal, rather than a fundamental force.
  13. Mass accretion which pushes the mass of a white dwarf over the Chandrasekhar limit. At this point the electron degeneracy pressure can no longer balance against gravity and it collapses.
  14. Depends on the type of supernova. The mechanisms that trigger then aren't that well understood, but they generally form from white dwarves or massive stars.
  15. Radiation pressure [1] in normal stars, or electron degeracy pressure [2] in white dwarves. [1] [2]