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AJRD Aerojet Rocketdyne

GRANT
Utility
Copper combustion chamber attached to injector by non-copper weld transition ring
23 Nov 21
A rocket engine includes a copper alloy combustion chamber, a non-copper weld transition ring welded to the copper alloy combustion chamber, and an injector assembly welded to the non-copper weld transition ring.
Mark J. Ricciardo, Edmund B. Stastny, Lee A. Ryberg
Filed: 9 Oct 18
GRANT
Utility
Load impedance tester and measurement method
2 Nov 21
An impedance measurement circuit includes a signal injector having a voltage input and a voltage output, a controllable switch, and a voltage drop device connected in parallel with the controllable switch between the voltage input and the voltage output.
Bryce L. Hesterman
Filed: 4 Dec 17
GRANT
Utility
Magnetic latch throttle valve
1 Jun 21
A latch valve includes a ferromagnetic shell, a ferromagnetic pole, a permanent magnet disposed within the ferromagnetic shell, an electromagnet disposed within the ferromagnetic shell, a seal, and a magnetic plunger disposed within the ferromagnetic shell.
Arturo Tolentino
Filed: 12 Apr 16
GRANT
Utility
Additive for solid rocket motor having perchlorate oxidizer
1 Jun 21
A method for enhanced validation of an entity associated with a COF token includes: storing at least transaction data, a token requester identifier (TRJD), and a COF token identifier; receiving payment credentials, wherein the payment credentials include at least a COF-specific payment token; generating a transaction message, wherein the transaction message is formatted based on one or more standards and includes at least a plurality of data elements including at least a first data element configured to store the COF-specific payment token, a second data element configured to store the COF token identifier, a third data element configured to store the TRID, and one or more additional data elements configured to store the transaction data; and electronically transmitting the generated transaction message to a financial institution via a payment network.
Scott K. Dawley, Daniel Doll
Filed: 15 Nov 16
GRANT
Utility
Boost turbo-pump with axially fed turbine
11 May 21
A liquid propellant rocket engine includes a main turbo-pump and a boost turbo-pump.
Khin Phui
Filed: 20 Jul 17
GRANT
Utility
Ground hydraulic system hypergolic slug injection
13 Apr 21
An engine start system includes a facility that has a ground based hydraulic pressurization system and a combustor of a liquid propellant rocket engine.
Douglas Parker, Frederick Dodd
Filed: 11 Jul 17
GRANT
Utility
Magnetic latch valve
30 Mar 21
A latch valve includes a ferromagnetic shell, a ferromagnetic pole, a permanent magnet, an electromagnet, and a ferromagnetic plunger that is disposed within the ferromagnetic shell.
Arturo Tolentino
Filed: 12 Apr 16
GRANT
Utility
Liquid propellant rocket engine nozzle with passive condensate cooling
23 Mar 21
A liquid propellant rocket engine includes a combustion chamber that has a throat and a nozzle aft of the throat.
Jiten R. Patel, Jim A. Clark, Charles Whipple, IV
Filed: 15 Jun 17
GRANT
Utility
Propulsion system with differential throttling of electric thrusters
2 Mar 21
A propulsion system includes at least one group of electric thrusters that are spatially distributed in a multi-axis system.
Ronald Corey
Filed: 19 Oct 15
GRANT
Utility
Stepped slinger
2 Feb 21
A turbopump includes a slinger that has a first section and a second section.
Thaddeus Chilcoat
Filed: 26 Jul 17
GRANT
Utility
Solid rocket motor with vortex inducing feature
4 Jan 21
A solid rocket motor includes a propellant grain structure defining an axial bore and a vortex inducing feature.
Samuel Steven Schlueter
Filed: 25 Jul 16
GRANT
Utility
Electric propulsion power circuit
7 Dec 20
A circuit (400, 700, 800) comprising: a first power source (402) supplying first current to a load (470) during a first Period of Time (“PoT”); a second power source (416) supplying a second current to the load during a second POT; a Unidirectional Current Valve (“UCV”) in series with the first power source; a current detector (420, 702, 802) in series with the UCV (422); and a switch (424) in parallel with a series combination of the current detector and UCV to bypass the UCV during the second PoT.
Michael Madigan, Alexandr L. Kristalinski, Brian Koch
Filed: 1 Jun 14
GRANT
Utility
Flow control system for a rocket engine with parallel fuel passage network
16 Nov 20
A flow control system (22) includes a fuel passage network (34) that has first (36) and second (38) network portions that are in a parallel flow arrangement with each other.
Mario Padilla
Filed: 30 Jun 16
GRANT
Utility
Dynamic seal
16 Nov 20
A duct includes first and second bellows sections.
Arthur Coleman
Filed: 7 May 17
GRANT
Utility
Solar array deployment
10 Aug 20
A method for solar array (28a, 28b) deployment includes deploying a first portion of solar cells of a solar array responsive to a first drag condition, charging a battery (26) with the first portion of solar cells, activating an electric thruster (24) at a first power level using the first portion of solar cells, deploying a second portion of solar cells of the solar array responsive to a second drag condition that is lower than the first drag condition, and activating the electric thruster at a second power level that is higher than the first power level using the first portion of solar cells and the second portion of solar cells.
Kevin Kelleher, Dennis Morris, Rodney Noble
Filed: 13 Sep 16
GRANT
Utility
Rocket motor with concentric propellant structures for shock mitigation
3 Aug 20
A solid rocket motor includes a first solid propellant and a second solid propellant at least partially surrounding the first solid propellant.
Peter J. Cahill, Jr.
Filed: 27 Jul 16
GRANT
Utility
Fragmenting nozzle system
22 Jun 20
A rocket motor includes a case and first and second nozzles in the case.
Phillip Stracener, Mark S. Derstine, John Mendillo
Filed: 18 Oct 16
GRANT
Utility
Hypervelocity cannon
22 Jun 20
A modified projectile includes a projectile, a container, and a liquid propellant in the container.
Melvin J. Bulman
Filed: 30 May 17
GRANT
Utility
Ignition system
4 May 20
An ignition system includes a multi-metallic ignition body that has at least two metallic elements in contact with each other.
Samuel Schlueter
Filed: 10 Mar 16
GRANT
Utility
Rocket thruster nozzle with connectors and brace
4 May 20
A thruster nozzle (24) includes a throat (28) and a nozzle end portion (30) that is integral with the throat.
Matthew Todd Jakubek
Filed: 10 Mar 16
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