MIL-DTL-82945B (OS)
4.3.1.1 High temperature. The rocket catapult assembly shall be subjected to the high-temperature
storage test in accordance with Method 501 of MIL-STD-810. The test items shall be maintained at 165 ±
5F for 50 hours minimum. Operation of the rocket catapult shall be only as specified in table III.
4.3.1.2 Vibration. The rocket catapult assembly shall be subjected to random vibration for jet aircraft in
accordance with MIL-STD-2102 with the exception that the duration shall be for 6 hours, with 2 hours on
each axis. Before vibration, units shall be temperature conditioned in accordance with table III for a
minimum of 8 hours. The input vibratory acceleration must have a Wo factor of 0.1 g2/Hz and the
reduction factor must be 0 g2/Hz-dB. If the rocket catapult must be removed from the environmental
conditioning chamber or if the temperature falls outside the specified temperature limits for more than 5
minutes, the testing shall be stopped and the unit reconditioned. A reconditioning time of 2 minutes for
every minute outside the specified temperature envelope shall be required. A continuous temperature
history of the unit will be kept for all conditioning and testing time. Unless otherwise noted, the rocket
catapult shall be mounted on a test fixture in a manner that will simulate actual seat/aircraft installation
and excited through the attachment fittings. In addition to compliance with the random vibration test, the
rocket catapult shall comply with the gun fire vibration test of Method 519 of MIL-STD-810 for those
applications whereby the guns are installed on the aircraft (see 6.2). However, if the maximum test
spectrum level of the gun fire configuration is determined to be equal to or less than the MIL-STD-2102
test level, the gun fire vibration test shall not be required.
4.3.1.3 Temperature shock. The rocket catapult assembly shall be subjected to the temperature shock
test in accordance with Method 503 of MIL-STD-810. The test temperature extremes shall be -65 ± 5F
and 165 ± 5F and the duration of exposure at each temperature shall be 8 hours. Operation of the rocket
catapult shall be only as specified in table III.
4.3.1.4 Thirty-day storage. Three rocket catapults shall be placed in storage at -65F and three at 165F
for 30 days each. Proper temperature shall be maintained throughout storage.
4.3.2 Static firing test. Within 30 days after completion of environmental exposure the rocket catapults
shall be static fired at the Indian Head Division, Naval Surface Warfare Center, Indian Head, MD 20640-
5000, Attn: Code E28, for aging testing. The sample shall be temperature conditioned per table III for a
minimum of 8 hours and test fired within 10 minutes after removal from the conditioning chamber to
verify conformance to the requirements of 3.4. 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 3.4.1 shall be cause for rejection of the first article sample.
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