"PROCESSOR, SOLID PROPELLANT"

Job Description and Jobs

• 4) Paints motor case, using spray gun.

• 5) Weighs out prescribed ingredients for insulating interior of case and starts agitator in mixing tank to blend ingredients to desired consistency.

• 6) Sprays insulating liner onto case interior, using spray gun.

• 7) Hoists case into oven to cure lining preparatory to inserting propellant.

• 8) Fills fuel transfer can with propellant mixture, according to prescribed safety procedures, bolts lid onto can, and starts vibrator to remove air bubbles from mixture.

• 9) Transfers filled can to casting area, using lift truck.

• 10) Brushes mold-releasing lubricant onto casting core to facilitate removal of propellant after curing.

• 11) Positions motor case in rack or pit and aligns casting core in case, using gauge and following markings on case interior.

• 12) Couples safety hose to valve in lid of transfer can and turns air valves to force propellant into case.

• 13) Bolts hydraulic jack to retainer ring of case and turns valve from behind safety barrier to force core into position, using system of mirrors to regulate movement of core.

• 14) Slips plastic bag and metal cap over assembly and transfers filled case to curing oven.

• 15) Sets automatic temperature controls of oven according to critical specifications for each type of propellant and size of motor.

• 16) Removes casting core from propellant after prescribed curing time, using hydraulic jack, and trims excess propellant from rim of case, using remote controlled air-powered knives.

• 17) Secures retaining collars, exhaust nozzle, ignition cable, and igniter motor in motor case, using torque and impact wrenches, to ensure alignment of all components.

• 18) Hoists motor onto cradle of scale and records weight.

• 19) Determines center of gravity of assembly, using centering devices and standard formula.

• 20) Stencils identity and motor specifications on case, using stencil and roller.

• 21) Prepares assemblies for static testing by transferring units to and from temperature-controlled rooms, securing them to test stand, recording test instrument readings, and disassembling faulty units for inspection.

• 22) Slides completed assemblies into pressurized shipping containers, using hoist and aligning devices to prevent damage during shipment.

• 23) Seals container, using gaskets, bolts, tape, resilient packing, and moisture-absorbing agents.

• 24) May be known as Mold-Release Worker; Rocket-Assembly Operator.

• 25) When casting smaller fuel elements in molds to produce free-standing grain, wrapping grain in inhibitor sheath to control rate of burning, and manually loading grain into motor case or container, is designated Technical Operator, Grain Preparation.

 

 

 

 

 

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