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US 6,890,638 B2Granted
Ballistic resistant and fire resistant composite articles
AssigneesHoneywell International Inc., Composix Co.
InventorsHuy X. Nguyen, Larry Dickson
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AssigneesHoneywell International Inc., Composix Co.
InventorsHuy X. Nguyen, Larry Dickson
Estimating the term…
Ballistically resistant and fire resistant composite articles for aircraft interiors and other applications. Composite articles are provided having a flexural modulus of at least about 80,000 lbs/sq. in (552 MPa), a flexural strength at yield of at least about 800 lbs/sq. in. (5.52 MPa), an areal density of about 0.9 lb/ft2 (4.40 kg/m2) to about 1.5 lb/ft2 (5.86 kg/m2), a fire resistance meeting the requirements of §25.853 Title 14 of the United States Code, Jan. 1, 2002, and a V0 velocity of at least about 1430 ft/sec (427 m/s) when tested by United States Federal Aviation Administration Advisory Circular 25.795.2, 10 Jan. 2002, using .44 Magnum Jacketed Hollow Point (JHP) bullets of 240 grains (15.6 g) mass and using 9 mm Full Metal Jacketed, Round Nose (FMJ RN) bullets of 124 grains (8.0 g) mass.
A composite article comprising a polymeric flammable fibers in a network said article having a flexural modulus of at least about 80,000 lbs/sq. in (552 MPa) as measured by ASTM D 790-00, a flexural strength at yield of at least about 800 lb/sq. in. (5.52 MPa) as measured by ASTM D 790-00, an areal density of about 0.9 lb/ft2 (4.40 kg/m2) to about 1.5 lb/ft2 (5.88 kg/m2), a fire resistance meeting the requirements of §25.853 Title 14 of the United States Code, Jan. 1, 2002, and a V0 velocity at least about 1430 ft/sec (427 m/s) when tested by United States Federal Aviation Administration Advisory Circular 25.795.2, 10 Jan. 2002, using .44 Magnum Jacketed Hollow Point (JHP) bullets of 240 grains (15.6 g) mass and using 9 mm Full Metal Jacketed, Round Nose (FMJ RN) bullets of 124 grains (8.0 g) mass.
A composite article comprised of a plurality of plies bonded together, said composite having an areal density of about 0.9 lb/ft2 (4.40 kg/m2) to about 1.5 lb/ft2 (5.86 kg/m2), a fire resistance meeting the requirements of §25.853 Title 14 of the United States Code, Jan. 1, 2002, and a V0 velocity at least about 1430 ft/sec (427 m/s) when tested by United States Federal Aviation Administration Advisory Circular 25.795.2, 10 Jan. 2002, using .44 Magnum Jacketed Hollow Point (JHP) bullets of 240 grains (15.6 g) mass and using 9 mm Full Metal Jacketed, Round Nose (FMJ RN) bullets of 124 grains (8.0 g) mass wherein a first ply is comprised of a metal foil, a second ply is comprised of a fire retardant bonding material and a third ply is comprised of a plurality of layers, each of said layers comprising a network of flammable polymeric fibers in a matrix, said polymeric fibers having a tenacity of at least about 17 g/denier, a tensile modulus of at least about 500 g/denier and an energy-to-break of at least about 20 Joules/g.
Dependencies are inferred from the claim text.