A fuel storage system is provided for storing dimethylether (DME), a blend including DME, or other similar highly volatile fuel at a vehicle. The fuel storage system including a main storage tank, an expansion tank, a fuel filling receptacle configured to receive a fuel filling nozzle of a filling station, and a valve arrangement having at least a normal operating setting and a fuel filling setting. The valve arrangement in the normal operating setting provides a fuel passage between the main storage tank and the expansion tank, and the valve arrangement in the fuel filling setting both provides a fuel passage between the fuel filling receptacle and the main storage tank and prevents fuel flow between the main storage tank and the expansion tank. The fuel storage system is configured to mechanically prevent disconnection of the fuel filling nozzle from the fuel filling receptacle unless the valve arrangement is in the normal operating setting. A corresponding method, as well as a further example embodiment of the fuel storage system, are also provided.

An enclosed volume is provided for performing operations in space, or on any astronomical object, in a manner separated from aspects of the external environment. The enclosed volume can be a flexible container for a satellite. The enclosed volume can include a membrane having a fluid barrier layer and being configured to contain a propellant gas or fluid; and an expulsion device configured to expel material from the membrane. In a stowed configuration, the flexible container is contained within the satellite, and in a deployed configuration, the flexible container extends away from the satellite. The flexible container can inflate from one shape, in the undeployed configuration, to another shape, in a deployed configuration. The other shape can be toroidal or other appropriate shapes. The flexible container can provide bipropellant, blowdown, and gas/fluid metering functionality. Entertainment and game play can be enabled by the enclosed volume involving robots and other devices.

An enclosed volume is provided for performing operations in space, or on any astronomical object, in a manner separated from aspects of the external environment. The enclosed volume can be a flexible container for a satellite. The enclosed volume can include a membrane having a fluid barrier layer and being configured to contain a propellant gas or fluid; and an expulsion device configured to expel material from the membrane. In a stowed configuration, the flexible container is contained within the satellite, and in a deployed configuration, the flexible container extends away from the satellite. The flexible container can inflate from one shape, in the undeployed configuration, to another shape, in a deployed configuration. The other shape can be toroidal or other appropriate shapes. The flexible container can provide bipropellant, blowdown, and gas/fluid metering functionality. Entertainment and game play can be enabled by the enclosed volume involving robots and other devices.

An expandable liquid tank device is secured to a vehicle to provided externally pressurized fuel to the fuel system of the vehicle. The tank can comprise an outer bladder containing a flexible inner bladder. An end plate can secure the bladders to the vehicle. Upon depositing fuel into the flexible inner bladder, the outer bladder expands and conforms to a tank region of the vehicle. The outer bladder (a pliable material) transitions from a flexible state to a semi-rigid or substantially rigid state upon depositing fuel into the flexible inner bladder. To provide pressurized fuel to the vehicle, pressurized gas is injected between the bladders, which exert pressure against the flexible inner bladder to dispense the fuel through the end plate and to the fuel system. A method of making the tank and dispensing fuel is provided.

In a fuel tank in which an upper joint flange of an upper tank half body and a lower joint flange of a lower tank half body are sandwiched between and seam welded by a pair of roller electrodes, the lower tank half body includes a lower tank main body portion and expansion tank portions shallower than the lower tank main body portion and disposed on opposite sides of the lower tank main body portion. A side wall of at least one of the upper and lower tank half bodies is provided with roller escape recesses recessed inwardly, the roller escape recesses being formed at a position corresponding to a connection portion of a main body corresponding joint portion and expansion tank corresponding joint portions in a joint portion formed by seam welding, and avoiding a contact with at least one of the pair of roller electrodes.

Various techniques are provided for an expandable energy absorbing fluid bladder. In one example, the fluid bladder includes a primary portion and a secondary portion. The secondary portion can be configured to expand or increase in volume when the fluid bladder is subjected to a pulse greater than a threshold pulse. Expansion of the secondary portion can allow fluid or additional fluid to flow into the secondary portion and thus decrease a peak pulse and, thus, avoid rupture of the fluid bladder.

An enclosed volume is provided for performing operations in space, or on any astronomical object, in a manner separated from aspects of the external environment. The enclosed volume can be a flexible container for a satellite. The enclosed volume can include a membrane having a fluid barrier layer and being configured to contain a propellant gas or fluid; and an expulsion device configured to expel material from the membrane. In a stowed configuration, the flexible container is contained within the satellite, and in a deployed configuration, the flexible container extends away from the satellite. The flexible container can inflate from one shape, in the undeployed configuration, to another shape, in a deployed configuration. The other shape can be toroidal or other appropriate shapes. The flexible container can provide bipropellant, blowdown, and gas/fluid metering functionality. Entertainment and game play can be enabled by the enclosed volume involving robots and other devices.

A fluid storage apparatus includes a guiding mechanism that linearly guides a flexible container in accordance with expansion and contraction of the flexible container. The guiding mechanism includes a guiding column that is disposed adjacent to the flexible container and that extends linearly and a slider that has a guiding hole, in which the guiding column is inserted, and that is formed on an upper edge portion of the flexible container.

A fuel tank includes: a tank body including a bottom wall, a lateral wall and an upper wall, the tank body storing fuel in an interior surrounded by the bottom wall, the lateral wall and the upper wall; and a sub-tank storing a part of the fuel, the sub-tank including a wall portion, an opening portion and a post portion, the wall portion standing on the bottom wall and extending toward the upper wall. The opening portion is provided in the wall portion and is a portion in which the fuel flows. The post portion is provided integrally with the wall portion. The post portion is extended along a height direction of the wall portion from the bottom wall and is joined to the bottom wall and the upper wall.

An expandable liquid tank device is secured to a vehicle to provided externally pressurized fuel to the fuel system of the vehicle. The tank can comprise an outer bladder containing a flexible inner bladder. An end plate can secure the bladders to the vehicle. Upon depositing fuel into the flexible inner bladder, the outer bladder expands and conforms to a tank region of the vehicle. The outer bladder (a pliable material) transitions from a flexible state to a semi-rigid or substantially rigid state upon depositing fuel into the flexible inner bladder. To provide pressurized fuel to the vehicle, pressurized gas is injected between the bladders, which exert pressure against the flexible inner bladder to dispense the fuel through the end plate and to the fuel system. A method of making the tank and dispensing fuel is provided.