MIL-DTL-11352K(AT)
documents should also include specific instructions regarding arrangements for examinations,
approval of first article test results, and disposition of first articles. Pre-solicitation documents
should provide Government waiver rights for samples for first article inspection to bidders
offering a previously acquired or tested product. Bidders offering such products who wish to
rely on such production testing must furnish evidence with the bid that prior Government
approval is appropriate for the pending contract.
6.4 Conformance inspection. Affordable conformance inspection with confidence varies
depending upon a number of procurement risk factors. Some of these factors include:
Contractor past performance, Government schedules and budget, product material and design
maturity, manufacturing capital equipment and processes applied, the controlled uniformity of
those processes, labor skill and training, and the uniformity of measuring processes and
techniques. During the solicitation, contracting documents should indicate those tests desired
from table I and their designated frequency based on a risk assessment for the procurement.
6.5 Definitions.
6.5.1 Duty. Duty (see 1.2), as used herein, is defined as a measure of the degree of
ballistic resistance required of the vision block and should be indicated as A, B, or C with
suffixes, as appropriate, on the applicable drawing. Reference Appendix A (see 4.6.3.4).
6.5.2 Ballistic failure. Ballistic failure is defined as any evidence of performance by a
spall (secondary projectile from the rear face of the vision block), or by part of the projectile
itself, of a 0.05 mm (0.002 in.) thick sheet of aluminum foil placed 102 mm (4 in.) to the rear of,
and parallel with, the rear face of the vision block.
6.5.3 Resolving power. Resolving power is a measure of the optical performance. The
resolving power is the angular subtense (in seconds of arc) of a series of parallel bars that can
just be resolved. Resolving power is measured by viewing charts containing parallel bars of
appropriate equal spacings.
6.6 Subject term (key word) listing.
Ballistic test
Composite
Fair impact
Laminated
Photopic transmittance
6.7 Changes from previous issue. The margins of this specification are marked with
vertical lines to indicate where changes from the previous issue were made. This was done as a
convenience only and the Government assumes no liability whatsoever for any inaccuracies in
these notations. Bidders and contractors are cautioned to evaluate the requirements of this
document based on the entire content irrespective of the marginal notations and relationship to
the last previous issue.
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