Abrégé

An infused solid polymeric fuel for use in a hybrid rocket or as explosive ordnance. An infused solid polymeric fuel can include a porous polymeric body having continuous pores distributed throughout a volume of the polymeric body and connecting to an external surface of the polymeric body. A combustion enhancement agent can be infused into the polymeric body. The combustion enhancement agent can be deposited on interior surfaces of the pores and on the external surface of the polymeric body. The combustion enhancement agent can include a catalyst, an oxidizer, a hypergolic fuel, or a combination.

Classes IPC  ?

• C06B 45/20 - Compositions ou produits définis par une structure ou des dispositions particulières des composants ou du produit comportant un composant revêtu le composant de base contenant un composant organique explosif ou thermique
• C06B 21/00 - Appareils ou méthodes pour la mise en œuvre des explosifs, p. ex. mise en forme, coupage, séchage

Abrégé

An exemplary embodiment of the present disclosure provides a method of sensing at least one characteristic of an analyte comprising: flowing media with the analyte through one or more microcavities; energizing the microcavity; and sensing at least one of the characteristics of the analyte via interrogation of the energized microcavity. Each of the one or more microcavities can comprise: a first mirror on a first planar surface; a second mirror on a second planar surface opposing the first planar surface; and at least one spacer between the first and second mirrors. The first mirror, second mirror, and at least one spacer can define a channel having an inlet and an outlet. The first and second mirrors can be positioned between the inlet and outlet.

Classes IPC  ?

• B01L 3/00 - Récipients ou ustensiles pour laboratoires, p. ex. verrerie de laboratoireCompte-gouttes

Abrégé

For maneuvering a spacecraft, a method calculates a virtual point that represents a plurality of spacecraft orbiting in a spacecraft formation. The method iteratively calculates a desired trajectory relative to the virtual point for a given spacecraft of the plurality of spacecraft using a relative orbital elements (ROE) state x of the virtual point and the given spacecraft. Model predictive control maintains the given spacecraft within an ROE constraint for a given time interval subject to a fuel consumption. In response to determining a drift trajectory of the given spacecraft is outside of a trajectory tolerance of the desired trajectory, maneuvering the given spacecraft to within the trajectory tolerance using a maneuver trajectory determined using the model predictive control.

Classes IPC  ?

• B64G 1/24 - Appareils de guidage ou de commande, p. ex. de commande d'assiette
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• G06F 111/10 - Modélisation numérique

Abrégé

For maneuvering a spacecraft, a method calculates a virtual point that represents a plurality of spacecraft orbiting in a spacecraft formation. The method further iteratively calculates an inner polytope boundary relative to the virtual point for a given spacecraft of the plurality of spacecraft. In response to determining the inner polytope boundary will be breached, the method maneuvers the given spacecraft to within the inner polytope boundary based on a switching condition, a guidance law, and model predictive control to minimize fuel consumption.

Classes IPC  ?

• B64G 1/24 - Appareils de guidage ou de commande, p. ex. de commande d'assiette
• B64G 1/10 - Satellites artificielsSystèmes de tels satellitesVéhicules interplanétaires
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu