Patent ID: 9139304
Filing Date: 2015-09-22
Classification: B64D,F42B

Abstract:
1. A method for unspinning a payload ejected from a spinning artillery projectile, the method comprising: loading the projectile with a cargo including the payload and a payload unspinning device, and ejecting the cargo from the projectile and operating the payload unspinning device, wherein: the cargo further includes a parachute and a shroud, the parachute has a folded state and a deployed state, and is disposed in the cargo in the folded state, the shroud covers the folded parachute and at least a portion of the payload, the payload unspinning device includes at least two yo-yo cords, each cord having a first end and a portion with a second end, the first end is coupled to the payload and the second end is attached to a cord weight, the portion with the second end of the at least two yo-yo cords is wound over at least a portion of the shroud, ejection of the cargo is preceded by an ejection command, ejection of the cargo is followed by unwinding of the at least two yo-yo cords, liberation of the shroud, deployment of the parachute, and stabilization of the payload, unspinning of the cargo unspins the payload for stabilizing parachuted payload descent, and contacting ground with at least one cord weight operates the payload.