Echidna Integration Screenshots / Possible Modifications 2013-12-11 Silber

Model in PDMWorks Nominal dimensions, taken from 300 mm proto Internal details reasonable but not exact Made an array of 19x on a 2.5 m sphere in 50 mm plate, 10.35 mm pitch Ferrule detail not DESI ferrule Several configurations / concepts in the model

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Spine balance Modeled C.G. 0.03 mm from ball center

Counterweight 8.76 g at 18.93 mm from center of ball

Spacing between steel cups 0.93 mm

Spacing between piezo tubes 2.67 mm

Small counterweight interference with two adjacent spines at R = 10 Small counterweight interference with two adjacent spines at R = 10.4 mm

No counterweight interference at R = 6 mm

Accurate cup bonding concept 5/16” Ball (same size as spine) Placed accurately w.r.t. rod tip Hex (permanent) for back end wrenching Rod tip Nut with flat shoulder and centering tip Stainless rod that fits through magnet hole Piezo tube Bond joint

Modified version wires route to front of focal plate via broached slot hole sleeve protects wires rear sleeve supports fiber ball size 9/32” (reduced from 5/16”) cup contact – doesn’t have the 3 tungsten carbide balls tungsten counterweight 35 mm thick focal plate ORIGINAL MODIFIED

tungsten counterweight Modifications Extended to R = 10.4 mm hole sleeve threaded rear sleeve fiber spring clip 9/32” ball tungsten counterweight wire exit slot

Modified version views wire routing slot

Modified version views

Modified version views

Modified version views

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Modified version views

Modified version views

Tungsten counterweight balance