MIL-DTL-48568D(OS)
3.3.1.1 Rocket motor grain. The rocket motor grain shall be loaded within 360 days of the oldest rocket
motor propellant mix.
3.3.1.2 Cartridge grain. The cartridge grain shall be loaded within 180 days of the oldest cartridge
propellant mix.
3.3.2 Other explosive components. The other explosive components are the percussion primer (Drawing
11820864) and the BKNO3 pellets (MIL-P-46994, Type II-A).
3.3.2.1 Percussion primers. The percussion primers shall be loaded within 24 months of manufacture and
certification or within 12 months of recertification. Loaded is defined as when the cartridge case is crimped
onto the cartridge head assembly.
3.3.2.2 BKNO3 pellets. The BKNO3 pellets shall be loaded into the cartridge head assembly within 12
months of the certification date. Loaded is defined as when the rocket catapult lot is released for lot
acceptance testing.
3.4 Performance and product characteristics. The rocket catapults shall meet the following performance
and product characteristics when test fired at 65, 70, and 165 F using an ejected weight of 459 pounds. The
rocket angle shall be set at 40 degrees (see Drawing 11820363).
3.4.1 Ballistics. The rocket catapults shall meet the ballistic requirements specified in table I.
3.4.1.1 Other requirements. In addition to meeting the ballistic requirements, none of the following shall
occur during test firing of rocket catapults:
a.
No unit component, including but not limited to catapult components, O-rings, springs, or
pieces of propellant shall be ejected. The only exceptions are small pieces of the cartridge grain
ABS tubing that are regularly ejected after rocket motor separation.
b.
No component subject to loading shall fail.
c.
No excessive nozzle erosion, hot spots, or burnthrough shall occur.
d.
No leakage of ballistic gas past a sealing surface, except for nozzle/retainer interface O-ring,
shall occur.
3.4.2 Initiation. Initiation input for test is 1,100 psi pressure source producing a 30,000 to 50,000 psi per
second positive rate of change.
3.5 Torque. The booster tube (Drawing 10551422) and head (Drawing 10551412) assembly and the
launcher tube (Drawing 10551423) and mount (Drawing 10551413) assembly, when seated with a torque of
400 +50, 0 inch-pounds, shall not be loosened or deformed when subjected to a breakaway torque of 200
inch-pounds.
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