Timeline for Perpetual motion machines and rocketry
Current License: CC BY-SA 4.0
10 events
when toggle format | what | by | license | comment | |
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May 25, 2021 at 18:53 | vote | accept | BMF | ||
May 25, 2021 at 0:56 | comment | added | csiz | Also keep in mind you'll be able to make very efficient and simplified rocket engines compared to today's existing stuff. SpaceX spent a decade developing the Raptor engine with full flow combustion cycle, but with spinners powering the pumps you get some free energy and immensely simplify the material requirements. You won't need a turbine to withstand the oxygen rich high temperature pre-burner gases. And if the spinners are small enough you can make both pumps completely enclosed, eliminating the need to figure out good valves to prevent oxygen & fuel leaks. | |
May 24, 2021 at 22:22 | comment | added | jdunlop | @JoelHarmon - not exactly, since transforming the former into the latter generally requires a fair amount of heavy and voluminous equipment, and the OP specified a gearbox to turn infinite torque into useful energy. | |
May 24, 2021 at 21:42 | comment | added | Joel Harmon | @Trioxidane really? If you have unlimited energy, and e=mc^2, then don't you also have unlimited matter? | |
May 24, 2021 at 21:14 | comment | added | John Dvorak | @Matthew honking lot of ion thrusters still can't get you above the iSp of an unloaded thruster, which is still pathetically low. And that doesn't account for the engineering difficulty of transferring thrust from a honking lot of thrusters into the rocket | |
May 24, 2021 at 16:03 | comment | added | Matthew | The nice thing about free energy is that the low ISp of an ion thruster matter less when you take away the incentive to not simply use a honking lot of them. | |
May 24, 2021 at 7:54 | comment | added | John Dvorak | @Trioxidane you could invest in good ole photon thrusters, but their ISp is even smaller than that of ion engines... and maybe you don't even need to go crazy on the design. Shove the cubes into a generator and let it warm up to nice balmy juuust below the melting temperature, then let it chill in the focus of a parabolic mirror. | |
May 24, 2021 at 6:24 | comment | added | Trioxidane | "Unlimited" is difficult, as you still have a finite amount of mass to fire, but the rest is full on the mark. | |
May 23, 2021 at 23:37 | comment | added | BMF | Ah, that hadn't really occured to me. The relatively great energy requirements of water electrolysis is basically eliminated by spinners. The fuel is free, especially on a frozen (water) ice world, just keep the manufacture going. Ion propulsion is probably the best way to use the spinners for efficiency. Great answer | |
May 23, 2021 at 23:26 | history | answered | jdunlop | CC BY-SA 4.0 |