Abstract: An unmanned aerial vehicle (UAV) can deliver a package to a delivery destination. Packages delivered by a UAV may be lowered towards the ground while the UAV continues to fly rather than the UAV landing on the ground and releasing the package. Packages may sway during lowering as a result of wind or movement of the UAV. By modulating a rate of descent of a package, a package sway may mitigated. The lowering mechanism includes wrapping a tether in various directions around the package such that the package rotates in a first and second direction as the package descends. Additionally, a rip-strip lowering mechanism that separates under tension to lower the package and a rappel mechanism that slides the package down a tether may be used. Accordingly, the tether can control a descent of the package assembly.

Abstract: An add-on sling-load system capable of being attached to a host that comprises a load provided with at least two slices arranged in a predetermined configuration and preferably a stack and a controlled coupling mechanism configured to attach and release at least one slice from the arranged configuration. The sling load system is used for multiple deliveries.

Abstract: A vertical mounted motor hoist and a method of hoisting a motor are provided. The motor hoist includes a threaded eye bolt for lifting the motor hoist; a sleeve threaded inside one end, and attached and held to the threaded eyebolt by means of a threaded plug and dowel pins and welding; and two safety chains for placement around the motor, each safety chain attachable to the sleeve by means of two oppositely positioned pinch bolts, each pinch bolt having a welded nut welded on to the sleeve and a jam nut tightened against the welded nuts.

Abstract: A device for the separation of a load from a belt assembly connected to it, especially of a parachute, which on impact with the earth compresses an impact component which is arranged on the impact side of the load and is released by the motion of impact. In order to achieve a safe separation which is free of delay, it will directly deal with the relative movement of the impact component or a mechanically connected part by the operation of the force of impact. The impact component can be developed as a landing shock absorber.