Abstract: In the current invention, the parafoil follows a longitudinal trajectory away or towards the generator. The work is created along the path of the line, not across. When the parafoil is extended away from the vehicle generating power, the parafoil is set by the control system in a high drag configuration. When the parafoil reaches the end of the line (or close to it), the controller sets up the parafoil in the retraction mode. In this mode, the parafoil still creates lift, but, at a significantly lower drag, and therefore, the ground station can easily retrieve it by pulling the line towards the vehicles.

Abstract: Current foot-launched 2-stroke commercial PPG offerings can meet the specified threshold (and in some cases, objective) requirements for flight ceiling, payload capacity and range with little to no modification. We will discuss those in the next section. The APES system enhances the effectiveness and lethality of the PPG-equipped unit by reducing weight of the PPG, increasing reliability and redundancy, reducing pilot workload, and seamlessly integrating with UAV's and UGV's. System improvements in the following areas is assessed: Series hybrid-electric powertrain, Coaxial propellers. Localization, autopilot, and formations, Auto landing and other advanced features, Integration with unmanned systems, and Launch Considerations.