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AJRD Aerojet Rocketdyne

APP
Utility
Injector with Injector Elements In Circumferential Rows That Alternate Between Counter-clockwise and Clockwise Swirl
25 Nov 21
An injector for a liquid rocket engine includes an array of injector elements.
Yaping (Alan) Huang
Filed: 30 Oct 18
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
APP
Utility
Pump with Axially-elongated Annular Seal Element Between Inducer and Impeller
4 Nov 21
A pump includes a shaft that is rotatable about a central axis.
Jeff Miller, Steven Grota
Filed: 19 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
APP
Utility
Hall Thruster with Annular Cathode
3 Jun 21
A Hall thruster includes an annular discharge region and an annular cathode concentric to the annular discharge region.
Justin Pucci
Filed: 19 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
APP
Utility
Power Converter Including a Recirculating Snubber
25 Mar 21
A power converter includes a first rectifier circuit having a pair of first rectifier circuit output terminals and a second rectifier circuit having a pair of second rectifier circuit output terminals, a snubber circuit comprising a first diode and a first capacitor connected to each other at a first node and connecting the pair of first rectifier circuit output terminals, a second diode and a second capacitor connected to each other at a second node and connecting the pair of second rectifier circuit output terminals, a third diode connecting the first node to one of the pair of second rectifier output terminals, and a fourth diode connecting the second node to one of the pair of first rectifier output terminals.
Bryce L. Hesterman
Filed: 11 Apr 18
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
APP
Utility
Pump with Housing Having Internal Grooves
6 Jan 21
A pump includes an axial inducer.
Khin Phui, Sen Meng
Filed: 11 Oct 18
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
APP
Utility
Load Impedance Tester and Measurement Method
9 Dec 20
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: 3 Dec 17
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
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