초록 ▼

A solid propellant motor is fabricated by spreading a propellant onto an uncured reinforced fabric tape to a uniform thickness and then partially curing the mass to a semi-rigid state. The semi-rigid blanket is then rolled with an air gap between the spirally wound layers. The final configuration of

A solid propellant motor is fabricated by spreading a propellant onto an uncured reinforced fabric tape to a uniform thickness and then partially curing the mass to a semi-rigid state. The semi-rigid blanket is then rolled with an air gap between the spirally wound layers. The final configuration of the motor is subsequently fully cured.

대표청구항 ▼

A method of fabricating a spirally wound, solid propellant motor grain with a support structure therein, the improvement comprising the steps of: spreading a layer of uncured solid propellant onto both sides of a support structure, said solid propellant being an ammonium perchlorate oxidized composi

A method of fabricating a spirally wound, solid propellant motor grain with a support structure therein, the improvement comprising the steps of: spreading a layer of uncured solid propellant onto both sides of a support structure, said solid propellant being an ammonium perchlorate oxidized composition containing a binder system that cures at a relatively high temperature, said support structure being a flexible, uncured, reinforced fabric tape with a thermosetting resin binder thereon that cures at a relatively high temperature, partially curing said uncured solid propellant applied to both sides of said uncured flexible support structure to a gelled state, forming said partially cured solid propellant and support structure into a layered, longitudinally-extending, spirally-wrapped solid propellant motor configuration, said propellant and support structure forming longitudinally-extending, annular air spaces between said layers, and heating simultaneously said finally formed, partially cured solid propellant and said support structure to a fully cured, structurally rigid state.