Ignition safety device for a multi-pulse or multi-stage rocket motor system

    公开(公告)号:US11988172B2

    公开(公告)日:2024-05-21

    申请号:US16952928

    申请日:2020-11-19

    申请人: Raytheon Company

    摘要: An ignition safety device (ISD) used in an ignition system of a missile is configured to selectively control the ignition of two or more pulses or stages of a rocket motor propulsion system, based on a flight profile mode selection of a flight velocity mode, in which the missile is configured to travel at an optimized flight velocity, or a flight distance mode, in which the missile is configured to travel an optimized flight distance. The ISD is configured to selectively ignite the pulses or stages substantially simultaneously upon selection of the flight velocity mode, or in a delayed sequential manner upon selection of the flight distance mode. The ISD is also configured to selectively inhibit the delayed sequential ignition of the pulses or stages in the event of incidental ground or water impact of the missile after ignition of the primary pulse or stage.

    IMPROVEMENTS IN AND RELATING TO WEAPON CONTROL

    公开(公告)号:US20220290959A1

    公开(公告)日:2022-09-15

    申请号:US17753340

    申请日:2020-08-13

    申请人: BAE SYSTEMS plc

    IPC分类号: F42C15/40 B64C39/02

    摘要: The present invention relates to the control of weapons, particularly weapons which are controlled via a communications link, possibly at some distance from the weapon's location. The invention is to an apparatus comprising safety-critical and non-safety-critical functional parts wherein at least one of a plurality of safety-critical functional parts is only connected to at least one other of the plurality of safety-critical functional parts.

    High-performance current-limited pyrotechnic initiator drive circuits

    公开(公告)号:US11309880B2

    公开(公告)日:2022-04-19

    申请号:US15849648

    申请日:2017-12-20

    摘要: Embodiments described herein provides a low-complexity solution and current protection for a current driver that provide current pulses to pyrotechnic initiators. The current drivers include current limiters that prevent high current transients during a current pulse. Further, a duration of the current pulse is controlled based on a thermal limit of the current driver to prevent thermal damage to the current driver. One embodiment comprises an apparatus that includes a control circuit and a current driver. The current driver is electrically couplable to a pyrotechnic initiator. The current driver includes a power switch circuit electrically coupled to a supply rail that supplies a current to a high side of the pyrotechnic initiator in response to receiving a drive signal from the control circuit.

    DEVICE FOR PRODUCING AN ARMING CRITERION, FUZE AND MUNITION

    公开(公告)号:US20200025543A1

    公开(公告)日:2020-01-23

    申请号:US16434697

    申请日:2019-06-07

    发明人: KARL KAUTZSCH

    IPC分类号: F42C15/40 F42C15/26

    摘要: A device produces an arming criterion for a fuze for a partly spinning munition. The munition has a first part which spins and a second part without or with little spin during flight of the munition. The device includes a sensor for outputting a characteristic variable for a relative rotation between the first part and the second part and a control unit for producing the arming criterion when the characteristic variable fulfils a flying criterion. The fuze for the partly spinning munition, which has at least one arming criterion, includes the device for providing the arming criterion or one of the arming criteria. The partly spinning munition includes the fuze with the device.