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:::Circle Jerk::: ::: Higgin's T-38 Talon
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Plane: Circle Jerk (thanks for the name Scott)  Span 74" Root 7" Tip 4.75" RG-14 weight 52oz wing loading 19 oz/ft^2 Length 43"
Fuse - Three piece (nose cone, servo tray, the rest), Cruciform flying stab. Wing Lay-up The G/F is 4.7 uni-carbon. The F/G is 1.4 oz bi-directional on a 45 bias. A carbon tube spar and the extra glass used when joining the wing halves should take care of the deficiency at the root.
Construction Getting the process set for the fuse is the tricky part. The plan right now has this order. 1) make rough plug 2) make wing 3) sink wing (with separator) into bondo wing saddle. 4) finish plug 5) make mold for nose cone 6) make nose cone. 7) cut off nose of fuse plug 8) lay-up an inner nose cone, make into servo tray 9) make mold of servo tray 10) lay-up an inner ring of the servo tray - aft 2" 11) mount ring on front of fuse plug. The plan is to have set lay-ups for the nose cone and servo tray. The servo tray will slide over a male extension of the fuse (various fuse lay-ups shouldn't effect the fit) and the nose cone will slide over the servo tray. The depth the servo tray inserts into the nose cone can be varied with a silicone cushion.What could possibly go wrong ...go wrong....go wrong. More details to come. Here is what happened.
The mold from left to right are: tail cone, fuse, servo tray, nose cone
Servo tray loaded up with gear. The ballast tube, pushrod housings and wires are hanging out the back.
Servo tray installed over main fuselage.
Ballast entry from the bottom of the servo tray.
Plane assembled. Control surfaces are taped with masking tape for the photos. For more details on the making of the molds and other stuff e-mail me. First flying impressions have been good. I'll update this in a few months ...after we have had the time to get aquainted.
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All Content © Craig Toutolmin |
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