MIL-DTL-48568D(OS)
component found to contain a critical defect shall be rejected. If any component is found to contain a major or
minor defect, the component lot shall be rejected. The component lot may be resubmitted for examination of
major or minor defects when all of the defective units are removed from the lot or when all of the defects are
corrected. Alternative methods may be proposed and used with the approval of the contracting activity. The
method shall be depicted in the contractor's quality program plan (see 6.2) and shall ensure that all
fabricating and processing of any type are accomplished under the controlled conditions which are monitored
and accepted by the contracting activity. Systematic control is required for all facets of work to assure all
dimensions and requirements are met. This control can be accomplished through direct or indirect inspection,
process monitoring, or statistical process control, or a combination of all four. Inspection for rubber O-rings
shall be in accordance with MIL-STD-413.
4.4.5 Production lot acceptance firing. Rocket catapults selected in accordance with 4.4.2.3 shall be static
fired at the Indian Head Division, Naval Surface Warfare Center, Indian Head, MD within 30 days after
submission for acceptance of the rocket catapult lot. The sample catapults shall be divided into two equal
groups with one group conditioned at 65 ± 2 F and the other group conditioned at 165 ± 2 F. Each group
shall be conditioned for a minimum of 8 hours. The catapults shall be fired within 10 minutes after removal
from the conditioning chamber. Minimum equipment accuracies shall be as shown in table V. Data specified
in table I shall be analyzed in accordance with MIL-STD-414, Section B, Part I, using the procedures of B-2
through B-4, Table B-1, and an AQL of 2.5 percent. Nonconformance with Table I or any requirement of 3.4
shall be cause for rejection of the lot.
TABLE V. Test equipment accuracies.
Measured characteristic
Equipment accuracy
Maximum thrust
± 2.0 percent
Time
± 0.001 second
Maximum acceleration
± 5.0 percent
Pressure
± 2.0 percent
Temperature
± 2.0 F
Minimum thrust frequency response for test stand
60 Hz
4.4.5.1 Contractor batch acceptance test firings. Rocket motors selected by the contractor to meet the
requirements of 4.4.2.3 shall be static fired by the contractor as rocket motor batch acceptance tests. The
sample rocket motors shall be divided into two equal groups with one group conditioned at 65 ± 2 F and
the other group at 165 ± 2 F. Each group shall be conditioned for a minimum of 8 hours. The rocket motors
shall be fired within 10 minutes after removal from the conditioning chamber. Minimum equipment
accuracies shall be as shown in table V. Failure of any rocket motor to meet the requirements of 3.4 shall be
cause for rejection of the specific batch of rocket motors.
4.4.5.2 Post static-firing disassembly. A post firing disassembly and inspection shall be conducted on all
first article units, all lot acceptance units, and all batch acceptance test units. Detailed observation on
conditions, including marginal conditions of individual components, shall be noted. All findings shall be
evaluated against the requirements of 3.4.1.1. When specified in the contract or order (see 6.2), a disassembly
findings report shall be submitted to the contracting activity.
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