Embodiments disclosed herein are directed to controlling the fueling process for a space launch vehicle based on a composition of a Liquefied (LNG) propellant being loaded onto the space launch vehicle. According to one embodiment, controlling a fueling process for a launch vehicle can comprise monitoring a flow of a fuel being loaded into a tank of the launch vehicle during the fueling process. Loading of the fuel into the tank of the launch vehicle can then be controlled based on the determined mass of the fuel and a predefined mass loading target for the fuel.

The present disclosure relates to a hydrogen tank temperature control apparatus, system, and method. An example embodiment of the present disclosure provides a hydrogen tank temperature control apparatus including an air guide between a stack cooling module configured to cool a fuel cell stack and the one or more hydrogen tanks, and a processor configured to control a temperature of the one or more hydrogen tanks by controlling one or more angles of the air guide.

A cryogenic storage control system and storage device assembly are provided. The cryogenic storage control system may utilize a dual fill level measurement arrangement in which a differential pressure-based fill level determination is compared to a fill level determined from an array of thermistors positioned at varying depths within the cryogenic storage container. Significant disagreement between fill level determinations may result in an alert being generated by a control system. Additionally, various operational processes may be implemented to ensure proper operation including calibration processes, monitoring processes, and maintenance processes.

To provide a calibration device reliably accomplish communication filling without a great deal of labor when filling gaseous fuel (e.g., hydrogen gas) from a filling apparatus (e.g., a hydrogen filling apparatus) to a device to be filled (e.g., a hydrogen tank of an FCV) via the calibration device, and so on. A calibration device 100 according to the present invention includes a flowmeter 1; a filling nozzle 2 connected to the flowmeter 1 through a pipe 4A, the filling nozzle 2 having a communication input part 2A that receives information from a side 30 to be filled as an optical signal; and a receptacle 3 connected to the flowmeter 1 through a pipe 4B, the receptacle 3 having a communication output part 3A that outputs the signal received from the communication input part 2A of the filling nozzle 2 to a filling nozzle side of a filling device 20 that fills gaseous fuel, wherein the communication output part 3A is movable in a central axis direction of the pipe 4B connected to the receptacle 3, and an optical signal is emitted from the communication output part 3A toward the central axis of the pipe 4B.

Systems and/or methods provided herein relate to cooling of a component within a chamber of a cryostat. A system can comprise a cryostat having a cooling plate disposed within the cryostat, and a cooling feed line extending into the cryostat from external to the cryostat, which cooling feed line is thermally coupled to the cooling plate by a heat exchanger. In one or more embodiments, the system further can comprise a bulk cooling system that employs a liquifiable gas to provide cooling, wherein the bulk cooling system is fluidly coupled to the cooling feed line. In one or more embodiments, the system further can comprise a vacuum pump disposed at the cooling return line and external to the cryostat and physically decoupled from the cryostat by a section of the cooling return line disposed between the cryostat and the vacuum pump.