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Nozzle Making Pictures
This is not intended to be a nozzle making tutorial, just a series of
pictures I took testing out a new camera, some of the pictures are a lot
blurry. This nozzle is to test some new graphite we got that is very
coarse, it is plating anode and the price was right, free! The design is
unique in that most of the divergence section will hang out of the case. |
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The anode is cut down to blanks. A blank is mounted in the lathe, the end
is faced flat and the outside diameter turned to fit the case. |
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The blank is chucked up and bored through for the throat and the
convergence is cut. Then the liner relief is cut so the liner slides over
the nozzle. |
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The propellant side is finished by sanding the convergence to shape and turning the O-ring grove. It is test fitted and chucked up the other way to cut the divergence. |
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Then the outside diameter is turned so the nozzle washer will slide over
it. The nozzle is cut to length and sanded to shape. |
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Here is a picture of the nozzle in it's new home, a 75 mm x 4 grain full K
motor and it's intended victim the 8.75" x 4' Candy Boy, it will be joined
by 3 H220s air started by a Gwiz MC. |
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| This process is VERY MESSY, even using a shop-vac close to the cutter the dust gets everywhere, like sharpening a billion pencils. We usually make several nozzles at once because the cleanup takes longer than the time to cut one nozzle and if you don't do it you will leave silver/gray fingerprints on everything you touch for weeks! | ||
