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Aviation History
1956
1956 - 0351.PDF
35130 Afa 1956 The prototype hull moving into the final-assembly position. The wings were joined to the hull stubs while remaining in their holding fixtures. Wing-splice Flanges. The wing is spliced to the stub, whichextends through the hull, by conventional bolted fittings at the spars, plus a tongue-and-groove bolted joint in the thick wingskins. To maintain the high accuracy required in assembling the wing root structure and machining the close tolerances requiredin this skin joint, a root end-gauge was made with the aerofoil contours machined by a special contour-milling attachmentmounted on a planer. This device consisted of a bracket clamped to the travelling head of the planer and a hinged arm with amotor-driven milling cutter and a follower cam. The cam rode on a loft template guiding the cutter to the wing profile.Another portable miller was developed to cut the precision surfaces of the tongue-and-groove skin joint after the wings andstubs were ready to be joined. The machine was mounted on a track attached to the end-gauge and had a cam which followed thecontour previously cut. Changing the cams permitted cutting An analysis of the extent to which Martin employed honeycomb (Marbond) metal sandwich and plastic assemblies in the SeaMaster design. HUU. O.S.L \ EH6INEW0RK PLATFORM SIAT INNER PANE I WIN& LEADING EDGE INTERIOR FLOOR STABIUZER ELEVATOR FIN RUDDER WING TRAILING EDGE OUTBOARD SPOIJ.ER ENGINE WORM PLATFORM WING TRAILING EDGE INBOARD INTERIOR DOOR ESCAPE CHUTE ELECTRIC PtATEN PRESS PLASTICS
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