Parachute recovery for UAV systems

Abstract

Parachute recovery systems are described from a systems perspective. Parachute recovery is particularly suited to tactical fixed wing UAV systems that require a high degree of mobility by allowing air vehicle recovery onto unprepared terrain. The descent environment is described, and the impact of wind on recovery is considered. The relative merits of cruciform, round and parafoil canopies are assessed, taking three real‐world systems as design examples. Throughout, design considerations are approached from a systems perspective, with a view to producing safe, autonomous and accurate recovery systems.

Development of Control Algorithm for the Autonomous Gliding Delivery System

“…By differentiating the expression for p ψ (3) and combining it with Hamiltonian (2) for both cases when and we can get a set of equations for 0 This is caused by the fact that there exists a point in time where both p ψ and p ψ are zero as can be seen from (6).…”

“…Moreover, ram-air parafoils are nowadays considered a vital element of the unmanned air vehicles (UAVs) capability and of International Space Station (ISS) crew rescue vehicle. [4][5][6][7][8][9][10][11][12] Autonomous parafoil capability implies delivering the system to a desired landing point from an arbitrary release point using onboard computer, sensors and actuators. This requires development of a guidance, navigation and control (GNC) system.…”

Recovery System of the Multi-Helicopter Uav

“…The concept and design of these systems must contain o series of requirements, such as: simplicity in design, simplicity in exploration, safety and reliability during its functionality, volume and weight reduce, reduced force for action mechanism, automation capabilities, precision for landing (for missions), reduced cost for acquirement and exploration, [15].…”

Development of a Hybrid Uav Sensor Platform Suitable for Farm-Scale Applications in Precision Agriculture

“…The landings are commonly rough and require special considerations for the protection of sensitive sensor payloads. From a practical perspective, creative landing methods like a parachute (Wyllie, 2001) or conventional belly landing are, thus, unsuitable.…”