UniCopter-UAV ~ Exhaust

Exhaust:

• Ideas for reducing noise:
• Point the output upwards, away from the ground. Hot gases must be defused over a large area of the passing blades. Put drain hole on the lowest part of the tube.
• Allow the exhaust to bleed out along the length of the exhaust tube.
• Manufacture the exhaust pipes form soundproof covered boron composite.
• At 5,800 rpm the Access FORM ~ Exhaust - Tuned gives a tuned length of 1.320 mm. (62"). Having not yet studied the material, I assume that this is the half-time length and that the difference in exhaust tube length between the two cylinders must be 62" to double the frequency of the exhaust noise while halving the volume.

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