公开(公告)号：US10234248B1

公开(公告)日：2019-03-19

申请号：US15731440

申请日：2017-06-12

Applicant: Department of the Navy

Inventor： Thinh Hoang ,  Khoa Nguyen ,  Daniel Corey Pines ,  Troy Caruso

IPC: F42C11/02 ,  F42B3/12 ,  H01L41/083 ,  H02N2/18

Abstract: A micro-electro-pyrotechnic energy-harvesting apparatus to harvest an incidental portion of a propellant energy utilized when a munition is fired freeing a magnet to strike an impact pin that strains a piezoelectric element. The piezoelectric element generates a collected voltage, which triggers a pyrotechnic initiator that, on activation, produces a straining force on a plurality of stacks of piezoelectric elements. The strained piezoelectric elements, in turn, generate a high voltage output sufficient to ignite the munition's explosive material. The apparatus may be quite small, for example, the cross-sectional size of a pen, which is about one centimeter, yet suitable for generating an electrical ignition of the explosive material.

公开(公告)号：US09921041B1

公开(公告)日：2018-03-20

申请号：US14756649

申请日：2015-09-29

Applicant: The United States of America as Represented by the Department of the Navy

Inventor： Thinh Hoang ,  Khoa Nguyen ,  Cuong Nguyen ,  Troy Caruso

IPC: F23Q7/00 ,  F42C11/06 ,  F42C11/02 ,  F42D1/055 ,  F42D1/05

CPC classification number: F42C11/06 ,  F42B3/006 ,  F42C11/02 ,  F42D1/05 ,  F42D1/055

Abstract: An initiator system includes a firing pin and a piezoelectric-based energy harvester that generates and stores electric energy when impacted by the firing pin. The electric energy is independently available at a first output and second output of the energy harvester. An electronic time delay is coupled to the second output for generation of an electric trigger signal using the electric energy available at the second output. The electric trigger signal is generated at a selected period of time after the electric energy is available at the second output. An initiation-energy generator is coupled to the first output for the storage of electric energy available thereof. The initiation-energy generator is also coupled to the electronic time delay to receive the electric trigger signal, and uses stored electric energy to generate an initiation explosion when the electric trigger signal is received.