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Motor Development Team
SS-TEM Nozzle Manufacture - Throat Insert
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37.8 Kb Richard Nakka Graphite blank. Enough for two throat inserts. 33.1 Kb Richard Nakka Blank cut in half and mounted on lathe; centre hole drilled 31.3 Kb Richard Nakka Faced and live centre inserted for support 35.1 Kb Richard Nakka Turning external taper 106 Kb Richard Nakka Close-up view of vacuum line used to draw graphite dust away as cutting proceeds. 112 Kb Richard Nakka Drilling through the insert 114 Kb Richard Nakka Enlargening hole with larger sized bit 71.8 Kb Richard Nakka Finished external 10° tapered surface 106 Kb Richard Nakka Boring bar extension for deep-boring 115 Kb Richard Nakka Boring internal 12° divergence cone 105 Kb Richard Nakka Finished divergence cone 100 Kb Richard Nakka Sawing off insert from remaining stock 104 Kb Richard Nakka Remaining stock 74.4 Kb Richard Nakka Parted insert ready to be mounted into insert holder for finishing operations 72.5 Kb Richard Nakka Insert holder, two views showing 10° internal taper 52.3 Kb Richard Nakka Graphite insert fitted into holder 52.4 Kb Richard Nakka Opposite end view 110 Kb Richard Nakka Assembly mounted into lathe; facing operation 111 Kb Richard Nakka Cutting radiused inlet region 104 Kb Richard Nakka Stepped profile of radiused inlet region. 101 Kb Richard Nakka Inlet region sandpapered to remove stepped profile leaving blueprint radius. 52.9 Kb Richard Nakka Finished throat insert 53.7 Kb Richard Nakka Opposite end view 11.3 Kb Richard Nakka Finished component met blueprint dimensions within stated tolerances