What feature is unique to the T-11 Main Parachute's design?

The T-11 Main Parachute is identifiable by its modified cruciform planform, which distinguishes it from other parachute designs. This unique shape is essential for enhancing stability and control during descent.

The modified cruciform design allows the parachute to have improved airfoil characteristics, leading to better glide performance and predictable heading control. This design is crucial for both military and civilian jumpers, ensuring a safer and more efficient descent.

In contrast, the other features listed—such as a strictly rectangular shape or being single-layered—do not accurately reflect the T-11's design. The inflatable leading edge also does not apply to the T-11, as its specific configuration focuses on optimizing performance through the modified cruciform shape. Thus, understanding the T-11’s unique design helps practitioners appreciate how its features contribute to its operational capabilities in various jump scenarios.