Abstract:
Systems and methods for recovering unmanned aircraft and controlling post-recovery motion of the aircraft are disclosed herein. An aircraft recovery system for handling an unmanned aircraft in accordance with one embodiment of the disclosure includes a base portion and an elongated aircraft capture member having a first end movably coupled to the base portion and a second, free end opposite the first end. The aircraft capture member includes a first portion and a second portion at a distal end of the first portion and positioned to intercept an unmanned aircraft in flight. The first and/or second portions are generally flexible. The system further includes an energy capture and dissipation assembly operably coupled to the aircraft capture member and positioned to receive at least a portion of the landing forces from the aircraft.
Abstract:
Systems and methods for recovering unmanned aircraft and controlling post-recovery motion of the aircraft are disclosed herein. An aircraft recovery system for handling an unmanned aircraft in accordance with one embodiment of the disclosure includes a base portion and an elongated aircraft capture member having a first end movably coupled to the base portion and a second, free end opposite the first end. The aircraft capture member includes a first portion and a second portion at a distal end of the first portion and positioned to intercept an unmanned aircraft in flight. The first and/or second portions are generally flexible. The system further includes an energy capture and dissipation assembly operably coupled to the aircraft capture member and positioned to receive at least a portion of the landing forces from the aircraft.
Abstract:
Methods and apparatuses for capturing and constraining motion of unmanned aircraft and other flight devices or projectiles. In one embodiment, the aircraft can be captured at an extendable boom. The boom can be extended to deploy a recovery line to retrieve the aircraft in flight. A trigger mechanism coupled to the recovery line can actuate a hoist device to reduce slack in the recovery line. A tension device coupled to the recovery line can absorb forces associated with the impact of the aircraft on the recovery line.
Abstract:
A step-in binding system (20) for securing a boot (24) to a snowboard (22). The boot includes a sole defining a toe end, a heel end, and a binding attachment surfaces (46 and 50). The boot also has an elongate, substantially U-shaped highback (28) mounted to the exterior of the boot in the calf area thereof and extending from the ankle area to the top of the boot. The step-in binding system includes a toe and heel binding (62 and 64) attached to the snowboard for receiving and securing the boot to the snowboard. The step-in binding system also includes a lever arm (66) attached to the heel binding for selectively releasing the boot from the binding. A lean support member (68) is fastened near the rearward end of the binding for engagement with a stopper block (29) secured to the highback to define a minimum forward lean angle of the boot and to limit the aft flexure of the ankle support portion of the boot when the boot is received within the binding.
Abstract:
Frangible fasteners and associated systems and methods are disclosed herein. In one embodiment, for example, an unmanned aircraft can include a fuselage portion, a wing portion, and a winglet carried by the wing portion. The aircraft can also include at least one frangible fastener coupling the winglet to the wing portion. The fastener is coupled to only partially release the winglet from the wing portion when a force on the winglet exceeds a threshold value.
Abstract:
Methods and apparatuses for launching unmanned aircraft and other flight devices or projectiles are described. In one embodiment, the aircraft can be launched from an apparatus that includes an extendable boom. A launch carriage is positioned on a launch guide structure of the boom and carries the aircraft during takeoff. An energy reservoir is configured to provide energy to the launch carriage during takeoff of the aircraft, and can absorb energy from the launch carriage to decelerate the launch carriage after takeoff. The apparatus can further include a transmission that smoothly and rapidly accelerates and/or decelerates the launch carriage.
Abstract:
Methods and apparatuses for capturing and recovering unmanned aircraft and other flight devices or projectiles are described. In one embodiment, the aircraft can be captured by a recovery line in flight, a process that can be aided by a line capture device having a retainer with two portions spaced apart by a distance great enough to receive the recovery line, e.g., to capture the recovery line with increased security. The line capture device can be operatively mounted on a lifting surface of the aircraft.
Abstract:
Frangible fasteners and associated systems and methods are disclosed herein. In one embodiment, for example, an unmanned aircraft can include a fuselage portion, a wing portion, and a winglet carried by the wing portion. The aircraft can also include at least one frangible fastener coupling the winglet to the wing portion. The fastener is coupled to only partially release the winglet from the wing portion when a force on the winglet exceeds a threshold value.
Abstract:
Methods and apparatuses for capturing, recovering, disassembling, and storing unmanned aircraft and other flight devices or projectiles are described. In one embodiment, the boom can be extended to deploy a recovery line to capture the aircraft in flight, a process that can be aided by a line capture device having retainers in accordance with further aspects of the invention. The aircraft can then be returned to its launch platform, disassembled, and stored, again with little or no direct manual contact between the operator and the aircraft, for example, by capturing a first wing of the aircraft and securing a second wing before releasing the first.
Abstract:
Methods and systems for starting propeller driven aircraft and other devices are disclosed. A system in accordance with one embodiment of the invention includes a removable fixture that is coupled to the propeller and has at least one portion exposed to a flowstream to rotate the propeller during engine start-up. The fixture is configured to separate from the propeller after the engine begins to turn over (e.g., after the engine starts and/or rotates above a threshold rate). Accordingly, the system can include a releasable link between the fixture and the propeller.