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Industry News
Correction: HPC, November 2013

In the September issue of HPC, the editors missed an error in the text of our Inside Manufacturing story, “Tooling up for larger launch vehicles.” An alert reader pointed out that in the last paragraph of the text on p. 66 (sixth line) we misspelled the word require.

Posted on: 10/31/2013
High-Performance Composites

In the September issue of HPC, the editors missed an error in the text of our Inside Manufacturing story, “Tooling up for larger launch vehicles.” An alert reader pointed out that in the last paragraph of the text on p. 66 (sixth line) we misspelled the word require. More importantly, from a technical standpoint, we mislabeled, in line 13, the English conversion that follows the SI units for surface profile tolerance, and we missed a stray comma. The text says “±0.508 mm (±0,020 mm).” The conversion in parentheses should read “(±0.020 inch).”

The following is the paragraph with corrections intact:

The tooling also would require support structures and fixtures to protect honeycomb-cored edges. Further, operators would need access to the interior of the part for core placement and vacuum bag preparation, and would require an inner mold line (IML) surface caul with a vacuum handling system (overhead equipment with suction cups to facilitate moving and positioning). The part — and, therefore, the tool — also would require a surface profile tolerance of ±0.508 mm (±0.020 inch). The structural design and analysis of the tooling was critical because of the myriad requirements combined with its scale:  The tool’s overall dimensions would be 2.1m by 5.7m by 8.6m (6.8 ft by 18.8 ft by 28.3 ft) with a facesheet surface area of 52.1m2 (561 ft2).

HPC regrets the errors.

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