What fabric is typically used for military parachute canopies and why?

What fabric is typically used for military parachute canopies and why?

• A. Nylon, chosen for glossy appearance.
• B. Nylon, chosen for strength, durability, and the ability to fold tightly for packing.
• C. Cotton, chosen for softness.
• D. Polyester, chosen for buoyancy.

Answer: (B)

The fabric for military parachute canopies is chosen for strength, durability, and how tightly it can be packed. Nylon fits that need well: it has high tensile strength for its light weight, resists tearing and abrasion, and can be woven into ripstop fabric so small tears don’t spread. Importantly, nylon can be folded and packed into compact bundles repeatedly without taking a permanent set, which is essential for field packing and quick deployment. It can also be treated to control water resistance and porosity, helping stable flight characteristics. Cotton isn’t suitable because it absorbs moisture and gets heavy when wet, reducing performance and packing efficiency. Polyester can be strong, but nylon’s combination of elasticity, strength-to-weight, and packing convenience generally provides the best overall performance for canopies. Buoyancy isn’t a desirable trait for canopy fabric.

The fabric for military parachute canopies is chosen for strength, durability, and how tightly it can be packed. Nylon fits that need well: it has high tensile strength for its light weight, resists tearing and abrasion, and can be woven into ripstop fabric so small tears don’t spread. Importantly, nylon can be folded and packed into compact bundles repeatedly without taking a permanent set, which is essential for field packing and quick deployment. It can also be treated to control water resistance and porosity, helping stable flight characteristics.

Cotton isn’t suitable because it absorbs moisture and gets heavy when wet, reducing performance and packing efficiency. Polyester can be strong, but nylon’s combination of elasticity, strength-to-weight, and packing convenience generally provides the best overall performance for canopies. Buoyancy isn’t a desirable trait for canopy fabric.