초록 ▼

A carbon-carbon structure useful for fabricating a nosetip for a reentry vehicle, which consists essentially of a central core, a plurality of layers of woven carbon fabric circumferentially wrapped around the core, and a carbon binder, wherein the core consists essentially of a plurality of longitu

A carbon-carbon structure useful for fabricating a nosetip for a reentry vehicle, which consists essentially of a central core, a plurality of layers of woven carbon fabric circumferentially wrapped around the core, and a carbon binder, wherein the core consists essentially of a plurality of longitudinally oriented carbon fibers.

대표청구항 ▼

A method for fabricating a carbon-carbon nosetip preform for a re-entry vehicle which comprises the steps of: a. providing a woven carbon fabric; b. providing at least two uniaxial rods, each rod consisting essentially of a plurality of uniaxial carbon yarns and a resin binder; c. gripping the leadi

A method for fabricating a carbon-carbon nosetip preform for a re-entry vehicle which comprises the steps of: a. providing a woven carbon fabric; b. providing at least two uniaxial rods, each rod consisting essentially of a plurality of uniaxial carbon yarns and a resin binder; c. gripping the leading edge of said fabric between said rods; d. circumferentially winding said fabric around said rods under a desired tension to a desired diameter to form a roll; e. securing the trailing edge of said fabric to prevent unwinding of said fabric; f. impregnating said roll with pitch; g. carbonizing the thus-impregnated roll; h. graphitizing and thus-carbonized roll; i. repeating said impregnating, carbonizing and graphitizing steps as necessary to achieve a desired material density. A carbon-carbon composite structure consisting essentially of a central core, a plurality of layers of circumferentially wrapped woven carbon fabric, and a carbon binder, wherein said central core consists essentially of a plurality of longitudinally oriented carbon fibers.