48 patents
Utility
Pump with axially-elongated annular seal element between inducer and impeller
24 Jan 23
A pump includes a shaft that is rotatable about a central axis.
Jeff Miller, Steven Grota
Filed: 19 Oct 18
Utility
Article with 2D and 3D Fiber Structure
12 Jan 23
An article includes a completed fabric structure that has multiple plies of fiber reinforced fabric.
Russell A. Ellis, Jeffrey D. Haynes
Filed: 20 Feb 20
Utility
Catalyst-containing Material
29 Dec 22
A catalyst-containing material includes a refractory matrix and particles of one or more catalytic metal elements or catalytic oxides.
Edward Wucherer, Benjamin Andrew Glassy
Filed: 25 Nov 19
Utility
Thruster Nozzle Assembly with Flow Regulator In Throat Area and Rotary Joint
15 Dec 22
A nozzle assembly according to an exemplary aspect of the present disclosure includes, among other things, a nozzle including a throat section.
Kevin Mark Noonan, Robert Cooper, Larry Kenneth West
Filed: 10 Dec 19
Utility
Valve Timing System for Liquid Fuel Rockets
8 Dec 22
A liquid fuel rocket engine according to one example includes a combustor, a liquid fuel repository connected to the combustor via a fuel line and a first valve, an oxidizer repository connected to the combustor via an oxidizer line and a second valve, a valve controller configured to output a valve control current to the first valve, the valve controller storing instructions for determining at least one actual minimum impulse bit of a valve based on a current profile and a voltage profile of a single operation of the first valve, and to adjust valve controls to account for the at least one actual minimum impulse bit.
Larry Coady
Filed: 10 Dec 19
Utility
Hall thruster with annular cathode
1 Nov 22
A Hall thruster includes an annular discharge region and an annular cathode concentric to the annular discharge region.
Justin Pucci
Filed: 19 Dec 17
Utility
Catalytic Thruster
29 Sep 22
A monopropellant thruster according to an exemplary aspect of the present disclosure includes, among other things, a first part having a catalyst bed, a thrust chamber, and a nozzle.
Vincent C. YARNOT, Steven STANLEY, Garrett URBAN, Matthew T. JAKUBEK, Ronald L. ARGUST
Filed: 22 Nov 19
Utility
Reconfigurable Power Processing Unit for Spacecraft Operations
23 Jun 22
A reconfigurable power processing unit for a spacecraft including a plurality of power modules.
Erich H. Soendker
Filed: 3 Jun 19
Utility
Electric Propulsion System Including Heaterless Dispenser Cathode
26 May 22
A circuit for igniting and sustaining an electron discharge includes an ignitor circuit.
Brian A. Koch
Filed: 1 May 19
Utility
Liquid propellant rocket engine turbopump drain
17 May 22
A liquid propellant rocket engine includes a pump that is disposed along a central axis.
Neil H. Orr
Filed: 26 Jul 17
Utility
Solid rocket propellant with low glass transition
26 Apr 22
A solid rocket propellant includes a binder that has hydroxyl-terminated polybudadiene (HTPB) with a curative that is selected from isocyanate-terminated polyether, isocyanate-terminated polysiloxane, or combinations thereof.
Daniel Doll, Scott Dawley
Filed: 30 Sep 16
Utility
Turbopump with axially curved vane
8 Mar 22
A turbopump includes an impeller (22) that is rotatable about an axis (A).
Jeff Miller, Saleh Tyebjee, Thaddeus Chilcoat, Steven Grota
Filed: 29 Jun 15
Utility
Dual stage catalytic thruster
1 Feb 22
A catalytic thruster includes a reaction chamber that extends between first and second opposed chamber ends.
Matthew Dawson, Gerald Brewster
Filed: 30 Jun 15
Utility
Pump with housing having internal grooves
1 Feb 22
A pump includes an axial inducer.
Khin Phui, Sen Meng
Filed: 12 Oct 18
Utility
Power converter including a recirculating snubber
1 Feb 22
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
Utility
Reduced Vapor-toxicity Hydrazine Composition
27 Jan 22
The hydrazine-containing composition is a liquid mixture that includes from 5 mol % to 95 mol % of unprotonated hydrazine selected from hydrazine, monomoethylhydrazine, dimethylhydrazine, ethylhydrazine, and combinations thereof, and from 5 mol % to 90 mol % of at least one oxygen-containing solute or solvent selected from acetals, acetyls, alcoxyamines having two or more carbon atoms, aldehydes, amides, amides and particularly carboxamides, aminoalcohols, carbazides, semicarbazides, carbon-containing nitrate salts comprising cations with logarithmic dissociation constants less than 9.2, hydroxyalkyl nitro compounds, hydroxyalkylhydrazines, carbonates, carboxylic acids and anhydrides of carboxylic acids, esters, ethers, ketals, ketones, mono- and poly-alcohols in 31% or greater mass fraction, nitrate esters, nitrosamines, sugars, and combinations thereof.
Robert K. Masse
Filed: 24 Jan 19
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
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
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
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