S.A.E.
Society of Automotive
Engineers.
SADDLE
The part of the harness
positioned under the seat of the
wearer.
SAFETY TIE
The thread used
in sealing a parachute.
SCISSORS
A cutting instrument
with two opposing blades.
SEAL PRESS
A mechanical
press used for compressing lead seals
to seal arachutes in accordance with
14 CFR subsection 65.133.
SEAM RIPPER
A small tool
used for picking or cutting threads in
sewing operations
.
SEAM, DIAGONAL
The
diagonal or horizontal seams which
join the section of each gore.
SEAM, RADIAL
A seam
extending from the skirt to the apex,
joining two gores. A portion of the
suspension lines may be concealed in
the tube formed by the radial seam.
SEAMS
Where two pieces of
fabric are joined together.
SEAR
Damage to fabric or lines
by heat generated through rubbing.
The melting of webbing, fabric or
line of nylon to prevent fraying.
SEAT PARACHUTE
Parachute
positioned below the back of
the wearer. Forms part of the seat
cushion in the aircraft.
SECTION
Any one of the
pieces of cloth which, when assembled,
form one gore of a parachute
canopy. Also known as a panel.
SELVAGE EDGE
The edge of
cloth which is so woven as to prevent
raveling.
SENIOR PARACHUTE
RIGGER
An individual certified
by the FAA to pack and maintain
parachutes. A journeyman
level classification of parachute
rigger.
SEPARATOR, LINE
A slotted
metal or wood device used to
hold suspension lines at the canopy
skirt after separation into groups during
packing.
SEWING MACHINE KNEE
LIFTER
A knee operated mechanism
which lifts the presser foot of a
sewing machine.
SEWING MACHINE
UPRISE
The uprise is the
upright part of the head (generally
located on the right side of the head)
that houses a portion of the moving
parts that transmit motion through
mechanical shafts and linkages to the
mechanisms in the base of the
machine.
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SEWING MACHINE
A
machine with a mechanically driven
needle used for sewing.
SEWING PATTERN
A
design outlined in drawings for joining
parts.
SHOCK CORD
A straight
elastic cord comprised of continuous
strands of rubber encased in a braided
cover. Used today primarily for
Safety Stow® loops on free bags.
SHOCK LOAD
The maximum
force exerted on the canopy by inflation.
This maximum force may be the
snatch force or it may be the opening
shock.
SHOCK, OPENING
The maximum
force developed during inflation
of the canopy. Follows the snatch
force.
SHOT BAG
A parachute packing
tool. A rectangular bag filled with
shot and used to hold folded gores in
position during packing.
SHOULDER STRAP
That
part of the harness webbing which
crosses the wearer’s back diagonally
between the shoulder blades and the
horizontal backstrap.
SIDE FLAP
A fabric extension
on each of the long sides of the pack
which fold over to enclose the
canopy.
SILK
A fiber produced by the silk
worm.
SINGLE POINT RELEASE
A harness release which has a single
closure such as the T-10 type; also, a
canopy release system operated by
one hand or action.
SINGLE THROW
ZIGZAG
A machine zigzag
stitch from left to right to left, etc.
Also known as a 304 stitch.
SKIRT
The reinforced hem forming
the eriphery of a canopy.
SKYDIVING
A popular name
for sport parachuting.
SLAG
A type 6 deployment
device. A short sleeve configuration
used on ram-air parachutes.
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. |
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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 tomatically
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. |
