公开(公告)号：US11879410B2

公开(公告)日：2024-01-23

申请号：US17184470

申请日：2021-02-24

Applicant: Raytheon Company

Inventor： Joseph A. Carmody ,  Benjamin C. Hulbert ,  Ryan J. Paffenroth ,  Andrew J. Harris

IPC: F02K9/32 ,  F02K9/26 ,  F42B15/10 ,  F42B5/10 ,  F42B15/00 ,  F02K9/97 ,  F42B14/00

CPC classification number: F02K9/32 ,  F02K9/26 ,  F02K9/978 ,  F42B5/10 ,  F42B5/105 ,  F42B14/00 ,  F42B15/00 ,  F42B15/10

Abstract: A rocket motor for a gun-fired projectile is configured stiffen the burnable propellant in the rocket motor during burning and/or protect the rocket motor from the pressure that occurs during firing of the projectile from the gun. The rocket motor may include a rigid structure that is integrated into the burnable propellant grain to stabilize the burnable propellant grain during burning of the burnable propellant grain. The rigid structure has a matrix or truss-like shape that extends into the depth of the burnable propellant grain. The rocket motor may include a baffled end cap that covers a nozzle of the rocket motor. The end cap defines a baffled path through the end cap to dampen gas flow into the nozzle and prevent particles of the gun propellant from entering the rocket motor. A rocket motor may implement the rigid structure or the baffled end cap, or both structures.

公开(公告)号：US20220025835A1

公开(公告)日：2022-01-27

申请号：US17184470

申请日：2021-02-24

Applicant: Raytheon Company

Inventor： Joseph A. Carmody ,  Benjamin C. Hulbert ,  Ryan J. Paffenroth ,  Andrew J. Harris

IPC: F02K9/32 ,  F02K9/26 ,  F42B15/10

Abstract: A rocket motor for a gun-fired projectile is configured stiffen the burnable propellant in the rocket motor during burning and/or protect the rocket motor from the pressure that occurs during firing of the projectile from the gun. The rocket motor may include a rigid structure that is integrated into the burnable propellant grain to stabilize the burnable propellant grain during burning of the burnable propellant grain. The rigid structure has a matrix or truss-like shape that extends into the depth of the burnable propellant grain. The rocket motor may include a baffled end cap that covers a nozzle of the rocket motor. The end cap defines a baffled path through the end cap to dampen gas flow into the nozzle and prevent particles of the gun propellant from entering the rocket motor. A rocket motor may implement the rigid structure or the baffled end cap, or both structures.