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SLEEVE—A tapered, fabric tube
in which the canopy is placed to control
deployment. A deployment
device.
SLIDE FASTENER—Zipper.
SLIDERS—A reefing device usually
for ram-air canopies. Comprised
of a fabric panel with grommets at the
corners through which pass the suspension
lines of the canopy.
SNAG—A fabric imperfection.
SNAP, CONNECTOR,
QUICK—A hook-shaped, springloaded
snap which snaps over a Dring
to connect two webbings.
SNAP, HARNESS, EJECTOR
TYPE—A harness snap that
attaches to the V-ring to secure two
parts of the harness together. An ejector
arm expels the V-ring when the
finger-grip lever is pulled outward.
SNATCH FORCE—The shock
produced on the load when the parachute
assembly fully strings out and
becomes suddenly accelerated to the
same speed as the load. Comes just
prior to opening shock.
SNIVELING—Slow opening of a
parachute.
SPEC—Specification, MIL-SPEC,
(military specification).
SPIRAL VANE PILOT
CHUTE—A pilot chute with a
cone-shaped, cloth-covered coil
spring used in free-type parachute
assemblies.
SPLICING—The process of joining
together, as the interweaving of
strands, overlapping and stitching of
materials.
SPLIT SADDLE—The lower
part of a harness which has independent
leg straps; no saddle cross strap.
SPORT PARACHUTING—
The making of premeditated parachute
jumps for pleasure.
SPORT RIG—A skydiving harness
and container system.
SQUARE KNOT—A knot in
which the terminal and standing parts
are together and parallel to each
other.
SQUARE PARACHUTE—A
gliding or ram-air canopy, having a
square or rectangular shape.
STAND—A sewing machine table.
STATIC LINE SYSTEM—A
parachute system which is attached
to the aircraft with a line and automatically
deploys the parachute.
STRAPS—The webbing components
of a harness.
SWAGES—The ball or other
device used at the end of a ripcord to
secure the cable to the handle.
T
TAIL POCKET—A deployment
device sewn onto the tail of a ram-air
canopy used to stow the suspension
lines.
TANDEM—A dual harness, dual
parachute system for use by two people
under the same main parachute.
TAPES—Narrow woven ribbons
used for reinforcing parachutes.
TECHNICAL STANDARD
ORDER—A minimum performance
standard for specified articles
G-12
such as materials, parts, processes, or
appliances used on civil aircraft.
THREAD—A thin continuous filament
made by spinning fibers and
combining the strands.
TITLE 14 OF THE CODE OF
FEDERAL REGULATIONS
(14 CFR)—The rules, regulations,
and guidelines established by the
FAA to govern the operation of aircraft,
airways, airmen, and the safe
operation of civil aircraft.
TOGGLE—A knob or webbing
loop at the end of the steering line for
grasping by the parachutist.
TRIMMING—Clipping or paring
to reduce to a neat orderly state.
TUCK—A shortening of material
caused by pulling fabric up in folds
and stitching across the gathered
fabric.
U
ULTIMATE LOAD—
Maximum load that can be applied
without causing any part of the structure
to fail.
ULTRAVIOLET LIGHT
DAMAGE—Degradation of nylon
fabric by exposure to sunlight or fluorescent
lights. Identified by a yellowish
color on white fabric or excessive
fading to colored fabric.
UNITED STATES PARACHUTE
ASSOCIATION—A
nonprofit division of the National
Aeronautic Association (NAA) which
governs sport parachuting activities in
the U.S.
V
VELCRO®—The commercial
name for hook and pile nylon tape
fastener.
VELOCITY—A vector quantity
that includes both magnitude (speed)
and direction relation to a given frame
of reference; also the time rate of
change of position.
VENT CAP—A piece of fabric
sewn to the upper lateral band and
covering the vent. Also known as a
vent patch.
VENT—The opening at the top, or
peak, of the canopy.
V-RING—A metal fitting shaped in
the form of a closed letter V, used
with snaps to secure or attach a load
to a parachute.
W
WARP—The threads which run
parallel to the selvage edge of cloth;
those which are crossed by the filling
threads.
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Parachute Rigger Handbook(113)
