An aircraft with a multi-walled fuel tank and method of manufacturing is presented. The aircraft includes a blended wing body and a fuel tank attached to the blended wing body configured to store liquified gas fuel. The fuel tank includes an inner wall, outer wall, and interstitial volume in between that is filled with insulation. The interstitial volume includes a reflective film layer and a structural insulation layer.

An aeronautical cryogenic tank device for storing gas, having a spherical or annular shape about an axis, comprising an inner container (26) defining a liquefied gas storage chamber (28), an outer envelope (27) containing the inner container (26), an insulation chamber (29) defined between the inner container (26) and the outer envelope (27), the reduced-pressure insulation chamber (29) having scaling equal to or better than 10-9 millibar*litre/second, a removable collector (38) passing through the outer envelope (27) and the inner container (26) in a sealed manner, the collector (38) extending over a diameter or a diagonal of the inner container (26) and having a free end close to a bottom of the inner container (26), and a conduit supplied by the collector (38).

An acronautical gas storage cryogenic tank device, comprising an inner container (26) defining a liquefied gas storage chamber (28), an outer envelope (27) containing the inner container (26) and made of a plurality of demountable parts for accessing the inner container (26), the outer envelope (27) being made of a material resistant to temperatures from less than 60 C. to at least +80 C. an insulation chamber (29) defined between the inner container (26) and the outer envelope (27), the reduced-pressure insulation chamber (29) having helium-tightness equal to or better than 10*9) millibar*litre/second defined between the inner container (26) and the outer envelope (27), two connections of which at least one is a sliding connection, supporting the inner container (26) and borne by the outer envelope (27), a removable collector (42) passing through the outer envelope (27) and the inner container (26) in a sealed manner, and a flexible thermally insulating neck (42) forming a sealed interface between the collector on the one hand and, on the other hand, the outer envelope (27) and the inner container (26), the neck (42) being formed around a portion of the collector (38), the neck (42) passing through the insulation chamber (29) in order to allow the collector (38) to be demounted independently of the pressure in the insulation chamber (29).

The present invention provides a cryogenic liquid storage tank including a supporter structure including: an inner tank for storing cryogenic liquid which includes hemispherical-form inner side plates formed at both sides thereof and an insertion groove entered into the inside at center of the inner side plates; an outer tank which is formed to cover the outside of the inner tank and includes hemispherical-form outer side plates formed at both sides thereof; a supporter which is inserted into the insertion groove at the center of the inside of the outer side plates and supports the inner tank; and a Multi-Layer Insulation (MLI) disposed in a contact area of the insertion groove and the supporter. Accordingly, thermal access may be minimized and a heat insulation property may be maximized.

A storage tank containing a fluid, the liquefaction temperature of which is lower than 50 C. under atmospheric pressure and having a cylindrical shape around an axis of revolution, the storage tank includes at least one thermal insulation barrier covered with a sealed and corrugated membrane which is made of a plurality of corrugations. These corrugations delimit a space between the corrugations and at least one thermal insulation barrier. The storage tank includes at least one system injecting gas into the space, the gas injection system including at least one circular pipe spreading around the axis of revolution of the storage tank and a nozzle linked to the circular pipe.

Leakage detection for pressurized fuel tanks. To provide facilitated leakage detection, a leakage detection device for pressurized fuel tanks for storing a pressurized fuel includes a fuel-sensing tracer and a light-wave conducting component. The fuel sensing tracer is configured to alter its optical properties in the presence of a predetermined fuel. The light-wave conducting component is in optical contact with the fuel sensing tracer. Light travelling within the light-wave conducting component is modifiable by altered optical properties of the fuel sensing tracer such that modified light is indicative of the presence of fuel at the location of the fuel sensing tracer.

The present invention provides a compressed fuel tank, comprising: an inner tank in which liquefied gas is stored; a support rod penetrating a central axis of the inner tank and having both sides of the inner tank fixed at both ends thereof; an insulating member provided to surround the inner tank so as to block heat transfer to the outside; an outer tank accommodating the inner tank, the support rod and the insulating member therein; and a rod support part fixed to both sides of the inside of the outer tank to support both ends of the support rod so as to transfer the load of the inner tank to both sides of the outer tank.

A removable closure for a cryogenic tank, wherein the cryogenic tank comprises a tank interior for storing a cryogenic medium, and an access opening in a multiple tank wall which includes a tank wall vacuum insulation space between inner and outer tank wall skins. The removable closure has an outer closure wall and an inner closure wall, and a closure vacuum insulation volume between the inner and outer closure walls. The removable closure is configured for the installation of equipment that is required for operating the cryogenic tank in the closure vacuum insulation volume formed in the interior of the removable closure. Also, a cryogenic tank and an aircraft.

A fluid assembly comprising: a first conduit extending in an axial direction and configured to carry a fluid, a double walled outer second conduit extending in the axial direction; the second conduit having an inner wall and outer wall and a first interspace between the inner and outer walls, wherein the first conduit is housed inside the second conduit to form a second interspace between the first conduit and the inner wall of the second conduit.

A support structure is configured to hold a storage tank by being located at least underneath the storage tank. The support structure includes at least a metallic structure and at least one pad including at least concrete mixed with a powdery material, the pad being superimposed on the metallic structure.