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Kites in Agrarian Regions
Published in K. R. Krishna, Aerial Robotics in Agriculture, 2021
Rokkaku kites are 6 sided. It is widely used in kite aerial photography. Rokkaku means 6-sided in the Japanese language. Rokkaku kites are built in different sizes and combinations of vertical and horizontal spreaders. The two most common ratios adopted while making a rokkaku kite are 3:4:5 and 4:5:6. The first number is the distance between two horizontal spreaders. Second is the span of the horizontal spreader and third is the overall height of the rokkaku kite (Shannon, 1996). We should keep the ratios of the kite’s sides same while changing the overall size of the kite. The most popular ratio regarding size of the rokkaku kite is 3:4:5. Now, regarding the material utilized to manufacture a rokkaku kite. The most common fabric used is ripstop nylon. Heavier nylons are stiff. Cotton fabric too could be used to make rokkaku kites. Rokkaku kites are easy to bridle. Bowing strings on the kite is also important. Deeper bowing is needed if the kite is small in size. Bowing thread should be strong enough. Flight adjustments using bridles and bowing strings are common.
Textiles for Firefighting Protective Clothing
Published in Guowen Song, Faming Wang, Firefighters’ Clothing and Equipment, 2018
Abu Shaid, Lijing Wang, Rajiv Padhye
Ripstop weave is a widely used woven fabric structure in technical textile industry. It is designed to stop the ripping. Extra high strength yarn is weaved in regular interval within the normal base fabric to provide resistance to spreading of tear. The definition of ripstop weave is given as “very fine woven fabric, often nylon, with coarse, strong warp and filling yarns spaced at intervals so that tears will not spread. The same effect can be achieved by weaving two or three of the fine yarns together at intervals” (Wingate, 1979, p. 513). It is suitable for technical textiles that required resistance to tear. In 2005, Du Pont patented weave fabric structure specially designed for FPC with ripstop yarn component where the ripstop yarn has at least 20% more tensile strength than the body yarn (Zhu & Young, 2005). Nowadays, many manufacturers use ripstop construction for fabric intended as an outer layer fabric of FPC.
Technical textiles for military applications
Published in The Journal of The Textile Institute, 2020
R. G Revaiah, T. M. Kotresh, Balasubramanian Kandasubramanian
An example for this is ripstop fabrics based on nylon or polyester. Ripstop fabrics are a combination of materials that are woven into a square pattern. The extra threads of synthetic fibre are placed within the weave at certain increments, usually 1/8 inch or smaller. Nylon and polyester are the two most common ripstop additives. This extra thread strength is what ‘stops a tear or rip from continuing beyond the first square’ and hence the name ‘ripstop’. The special structure minimizes the damage to a garment in the unfortunate circumstance during which it may get torn or ripped (Figure 3).