MIL-STD-849B
3.2.11 Bias. A cut or seam running obliquely across the threads of a fabric.
3.2.12 Binding. A piece of tape or fabric folded over and stitched to a raw edge of the fabric to prevent raveling or fraying.
3.2.13 Bottom, false. A piece of fabric sewed to the inside of a pack to retain the frame;
it also serves as a base for stitching the suspension line retaining loops.
3.2.14 Breakcord. A thread or tape tied between parachute components that is intended to break under desired load during deployment.
3.2.15 Bridle. The cord attaching the pilot chute to the vent of a parachute canopy or to the deployment bag.
3.2.16 Burns, friction. Result of rapid rubbing together of two textile surfaces, generating frictional heat, which reduces tensile strength of the textile and causes the deterioration of individual threads.
3.2.17 Cable, ripcord. A flexible cable, usually made of corrosion resistant steel, joining the locking pins and the ripcord grip.
3.2.18 Canopy. The portion of a parachute consisting of the drag-producing surface and the suspension lines extended to one or more mutual confluence points.
3.2.18.1 Canopy, extended skirt. A canopy made from cloth having a flat circular center to which an annular ring is added.
3.2.18.2 Canopy, flat circular. A canopy made from cloth and constructed as a flat circular surface with a center orifice (vent) and consisting of a number of gores stitched together laterally, the joints forming the radial seams.
3.2.18.3 Canopy, guide surface. A canopy made from cloth similar to flat circular canopy except the alternate roof panels are extended to provide guide surfaces.
3.2.18.4 Canopy, ribbon. A canopy of flat circular design and composed of concentric cloth ribbons, supported by a number of radial ribbons and smaller supporting tapes.
3.2.18.5 Canopy, ring sail. A canopy of annular ring type developed on a spherical surface by a unique system of gore coordinates, basically shaped as a quarter sphere wherein slots in the gore are crescent shaped rather than trapezoidal (except on the crown).
3.2.18.6 Canopy, ring slot. A canopy of flat circular design made from wide concentric cloth strips with intervening air slots. The number of slots vary, depending upon canopy diameter.
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