MIL-DTL-82945B (OS)
divided into two equal groups with one group conditioned at -65 ± 5F and the other group conditioned at
165 ± 5F. 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 ANSI/ASQ Z1.9, Section
B, Part I, using the procedures of B-5 through B-7. 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 percent
Pressure
± 2.0 percent
± 2.0F
Temperature
Thrust frequency response, minimum
60 Hz
4.4.5.1 Contractor batch acceptance test firing. Units (rocket motor grain assemblies or catapult grain
assemblies) selected by the contractor to meet the requirements of 4.4.2.3 shall be static fired by the
contractor as batch acceptance tests. The sample units shall be divided into two equal groups with one
group conditioned at -65 ± 5F and one group at 165 ± 5F. Each group shall be conditioned for a
minimum of 8 hours. The units 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 unit to meet the
requirements of 3.4 shall be cause for rejection of the specific batch of rocket motor grain assemblies or
catapult grain assemblies.
4.4.5.2 Post static-firing disassembly. A post firing disassembly and inspection shall be conducted on
all first article, lot acceptance, and batch acceptance test units. Detailed observations on conditions of
individual components, including marginal conditions, shall be noted. All findings shall be evaluated
against the requirements of 3.4.1.2. When specified in the contract or order (see 6.2), a disassembly
findings report shall be submitted to the contracting activity.
4.4.6 Nondestructive tests. Each rocket catapult assembly shall be subjected to the following tests.
When specified in the contract (see 6.2), the contractor shall furnish test reports detailing the results of all
nondestructive tests for each lot of rocket catapults.
4.4.6.1 Radiographic inspection. Rocket catapults shall be radiographically inspected in accordance
with ASTM E 1742, radiographic quality level 2-1T. Any deficiency shall be cause for rejection of the
unit. Radiographs shall be capable of detecting defects and rocket catapult components 0.03 inch in length
or width. When specified in the contract (see 6.2), all radiographs taken of the rocket catapult assembly or
components thereof shall be forwarded to the activity designated by the contracting activity. Otherwise,
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