CANOPY, RINGSAIL—A canopy com- posed of concentric rings installed on a spherical surface. The slots that are contained in the gores are in the form of a crescent. See also CANOPY. CANOPY, RING SLOT—A canopy com- posed of concentric cloth strips with intervening air slots. The number of slots will vary with the diameter of the canopy. See also CANOPY. CANVAS—A heavy, closely-woven cloth of linen, cotton, or synthetic fiber. CASING (SLEEVE)—The outer woven cover of the suspension line. CAUTION—Indicates danger to equipment. The caution precedes the step or item to which it refers. CcM—Abbreviation for cubic centimeters per minute. CDI—Abbreviation for collateral duty inspector. CHANNEL, CANOPY—The space or open- ing formed by the overlapping of cloth in making of radial seams. The suspension lines pass through the channels and are retained in position. The channels aid in transmitting load from the lines to the cloth. CHUTE—Abbreviated slang form of parachute. CLAMP, DUAL HOUSING—A metal clamp located on the outside of the end flap of back- and seat-type parachutes. The clamp secures the ripcord and power cable to the container end flap. CLEVIS—A U-shaped metal fitting with a hole in each end to receive a pin or bolt. CLIP—A device that fastens, holds together or retains; for example, the clip that is tacked to a riser and holds the ripcord housing in place. CLOTH, CANOPY—The cloth used in parachute canopies. It is woven to withstand the impact of air pressure when the parachute opens. The canopy cloth is woven from nylon yarns, usually in a ripstop weave. See also CANOPY. (Ref. MIL-C-7020, Cloth, Nylon, Parachute.) CLOTH, NYLON RIP-STOP—A type of nylon cloth used in canopy manufacture. The weave pattern of the nylon cloth consists of reinforced ribs, in both the warp and the filling, forming a uniform pattern of squares. The cloth is designed to keep hole damage to a minimum when rips or tears develop in the canopy. CLOVERLEAF HANDLE—A ripcord handle that is used on chest- and integrated back- type parachutes. It is shaped in the form of a cloverleaf. CO2—Abbreviation for carbon dioxide. COLLAR, VENT—A strip of nylon cloth. One edge is sewn to the vent hem of the canopy so that a collar or cylinder is formed above the top of the parachute. The other edge is hemmed to form a channel for the insertion of a molded rubber ring. C O M B U S T I B L E   M A T E R I A L / S U B- STANCE—Any material or substance capable of burning in the presence of oxygen. See also EXPLOSIVE MIXTURE, FLAMMABLE MATERIAL. COML—Abbreviation for commercial. Refers to parts that are commercially available. COMPONENT—Item of equipment making up part of an assembly; for example, a ripcord housing is a component part of a ripcord assembly. CONE, LOCKING—A small, smooth, cone- shaped metal post sewn to the flaps of the container or inside the vane-type pilot parachute. The cone has a horizontally drilled hole a short distance from the top to admit a temporary locking pin or the ripcord pin. The pilot parachute locking cone contains two holes. The flange contains holes for securing purposes. CONFIGURATION—The makeup, size, shape, and relative location of parts of an item of equipment and its accessories. This includes the composition of the materials as well as marking details. The configuration of each equipment is specified by Government drawings, military specifications and modification instructions. CONFLUENCE POINT—A coming or running together of two or more lines. AI-3