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This power brings with it a whole range of difficulties, with initial tests causing extensive vaporization of the projectile and rail damage. A typical design utilizes around 4 - 10kV, with higher voltages being used at higher energies.


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NASA is also researching the possibility of a launcher which would deliver payloads into orbit at a fraction of the cost of a rocket launch.



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A third prototype will probably employ advanced power switching technology, probably solid state SCR as well as external magnetic field augmentation around the rails. It would be desirable for a future Rail Gun design to employ a supersonic injector.

As such, it has been decomissioned and a new RailGun was developed. I hope to replace this with an inverter-based charger some time in the future. It will use a supersonic injector and a higher energy storage capacitor bank.

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This approach was chosen because of low cost, availability and the fact that microwave oven transformers are current limited, which simplifies the charge circuit significantly. The actual pulse length of the bank was measured at On the Teflon projectile, the aluminum backing becomes a plasma during the discharge and recycles some of the efficiency losses in the form of propellant pressure. Each individual capacitor in the Joule capacitor bank is fitted with its own 50kOhm 10W resistor for charge equalization and also to serve as a bleeder which will drain the capacitor and prevent unwanted charge build up.
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  1. In order for acceleration to be maximized optimum parameters must be chosen for all these variables and others which will be mentioned later. Information on the tests performed with the first Rail Gun, along with videos, images, and detailed information on its failure are available through T he RailGun Testing Page link.