Numerous papers in the area of parafoil system design have been published over the past 50 years. They cover the following major topics: The future of the Army's air delivery mission includes the use of precision-guided autonomous airdrop methods to resupply troops in the field. High-glide systems, ram-air parafoil-based, allow for a safe standoff delivery as well as wind penetration. This paper addresses the development of a six-degree-offreedom model of a low-aspect ratio controllable parafoil-based delivery system. The model is equally suitable for modeling and simulation and for the design of guidance, navigation and control (GNC) algorithms. This gliding parafoil model was developed in the MATLAB/Simulink ® environment. Apparent mass and inertia effects are included in the model. Initial test cases have been run to check model fidelity.Advanced computational methods for the 3D flow simulation around the parafoil canopy; [1][2][3] Wind-tunnel experiments; [4][5][6][7] Real drop experiments. [8][9][10][11][12][13][14][15][16][17][18]

and the United States). During the PATCAD 2003 week, fourteen companies presented briefings on their current systems/technologies that emphasized their capabilities as well as future plans and improvements. The companies that were demonstrating during the week were able to explain what would be seen during the drops of their systems. Thirteen different precision airdrop systems were live demonstrated at or near the La Posa Drop Zone at YPG. The systems demonstrated ranged in maturity from new prototype systems, having their first autonomous drops at PATCAD 2003, to relatively mature systems which have hundreds of drops and are already in operational use in some countries. PATCAD is not to be viewed as a competition as the systems demonstrated have a wide range of Technology Readiness Levels (TRLs). Nearly 50 total airdrops were conducted over the course of the event. The systems demonstrated included the following, listed by manufacturer/developer:

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