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Perform integration according to the Piston Integration Procedures above.
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Run wires from outside to inside the blast chamber. Make sure that the wires are shorted on the outside of the blast chamber. On the inside, unshort the e-match leads and connect it to the wires.
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Place the piston in the vacuum chamber (firebolt-fitting assembly pointing down).
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Clamp the piston between two bricks.
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Put the lid on the chamber and turn on the vacuum pump until pressure level reaches 0 psi.
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Only after exiting the chamber and closing the door, perform a countdown and connect the outside wires to a voltage source (battery).
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In the event of a misfire, disconnect the battery and wait at least 60 seconds before allowing anyone to enter the chamber/approach the test article.
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After firing, wait at least 60 seconds before entering the blast chamber.
- two piston tests were conducted
- first conducted at about 9in Hg (approx. 30,000 ft)
- second conducted at 3in Hg (approx. 80,000ft)
- observed slow and premature extension of piston rod with depressurization
- suggests piston is not pressure-sealed
- pistons will be unable to allow for combustion of black powder above 30k ft and thus co2 ejection systems will be used for Medusa