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Patent Agency Ranking
公开(公告)号：US20220082066A1
公开(公告)日：2022-03-17
申请号：US17017741
申请日：2020-09-11
Applicant: Raytheon Company
Inventor： Frederick B. Koehler , Mark J. Meisner , Jeff L. Vollin
Abstract: A solid rocket motor uses at least one thermally conductive wire or at least one pair of electrically conductive wires to increase a burn surface area of a propellant grain and thus a thrust of the rocket motor. The rocket motor includes a pulse chamber containing a burnable propellant grain, a propellant inhibited center bore bonded to surfaces of the burnable propellant grain, and at least one conductive wire coupled to the burnable propellant grain and arranged in variable regions along the propellant inhibited center bore. The conductive wire is configured for passive or active activation to ignite the propellant inhibited center bore that subsequently burns in the variable regions. The thermally conductive wire is formed of a refractory metal or refractory alloy material that enables the entire length of the wire to be heated simultaneously or nearly simultaneously when the wire is passively activated.
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公开(公告)号：US20240361458A1
公开(公告)日：2024-10-31
申请号：US18646096
申请日：2024-04-25
Applicant: Raytheon Company
Inventor： Mark J. Meisner
IPC: G01S17/36 , G01S7/00 , G01S7/4911 , G01S7/4912
CPC classification number: G01S17/36 , G01S7/006 , G01S7/4911 , G01S7/4917
Abstract: In a system for covert sensing and communications a broadband light source is encoded using spread spectrum waveform coding to spread a narrow-band signal over frequency. The modulated broadband light is suitably hidden in additional noise and then split into two portions, a first portion of which illuminates a target, and a second portion of which is delayed and provided as a local oscillator. Light reflected from the target is combined with the local oscillator, detected using heterodyne, homodyne or quasi-homodyne techniques, demodulated and decoded to estimate the phase of the reflected light relative to the transmitted light to provide fine range estimates for the target. Waveform coding allows for time-correlation of the transmitted and received coded waveforms to provide improved resolution for adjusting the delay of the local oscillator to improve the detection schemes. The waveform coding also provides a covert communications channel.
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公开(公告)号：US12065990B1
公开(公告)日：2024-08-20
申请号：US18471881
申请日：2023-09-21
Applicant: Raytheon Company
Inventor： John Rascon , Anthony V. Formica , Mark J. Meisner
Abstract: An insulated blast tube includes an insulating layer of a burn resistant material such as phenolic resin formed on an interior surface of the blast tube to provide the necessary erosion and thermal insulation properties to protect the blast tube and a heavy inert gas insulated layer formed in the walls of the blast tube itself to provide the additional thermal insulation properties to protect any non-propulsive sub-systems positioned in the void space around the blast tube. A void space in the walls of the blast tube contains an inert gas such as Argon, Krypton, Xenon or a synthetic inert gas having a density of at least 1.5 kg/m3 and a thermal conductivity Tcond_gas of no greater than two-thirds the thermal conductivity of air Tcond_air to form the heavy inert gas insulation layer.
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公开(公告)号：US12140408B1
公开(公告)日：2024-11-12
申请号：US18471855
申请日：2023-09-21
Applicant: Raytheon Company
Inventor： John Rascon , Mark J. Meisner , Manuel E. Gonzales
Abstract: A heavy inert gas insulation layer is wrapped around the length of a warhead to thermally insulate the warhead from fire or aerodynamic heating. The insulation layer may be integrally formed into the warhead casing or provided as a sleeve that may be permanently or removably positioned about the warhead casing. The insulation layer contains an inert gas such as Argon, Krypton, Xenon or a synthetic gas having a density of at least 1.5 kg/m3 and a thermal conductivity Tcond_gas no greater than two-thirds of the thermal conductivity of air Tcond_air.
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公开(公告)号：US11530669B2
公开(公告)日：2022-12-20
申请号：US17017741
申请日：2020-09-11
Applicant: Raytheon Company
Inventor： Frederick B. Koehler , Mark J. Meisner , Jeff L. Vollin
Abstract: A solid rocket motor uses at least one thermally conductive wire or at least one pair of electrically conductive wires to increase a burn surface area of a propellant grain and thus a thrust of the rocket motor. The rocket motor includes a pulse chamber containing a burnable propellant grain, a propellant inhibited center bore bonded to surfaces of the burnable propellant grain, and at least one conductive wire coupled to the burnable propellant grain and arranged in variable regions along the propellant inhibited center bore. The conductive wire is configured for passive or active activation to ignite the propellant inhibited center bore that subsequently burns in the variable regions. The thermally conductive wire is formed of a refractory metal or refractory alloy material that enables the entire length of the wire to be heated simultaneously or nearly simultaneously when the wire is passively activated.
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