37results about How to "Maintainability" patented technology

A small-bored cylindrical bearing member which can enhance the maintainability for a lubricating oil therein. The member has blind grooves in a seamless cylindrical central body portion of the interior hollow cylindrical surface of the bearing member. A method of manufacturing the cylindrical bearing member having blind grooves with blocked-in end portions extending in the longitudinal direction of the cylindrical portion and spaced from the ends of the member. The grooves can be easily formed in the central body portion of the inner circumferential cylindrical surface of the central body portion with the blocked-in ends spaced from the opposite ends of the seamless bearing member. The seamless member is first formed with a tapered or flared portion at one open end which is later narrowed into a round cylindrical form. Before narrowing the tapered or flared portion, the blind grooves are formed by a groove punch pushed through the open end into the central body cylindrical portion. After narrowing, the blind grooves have blocked end portions spaced from the opposite ends of the bearing in the longitudinal direction.

The invention relates to a ship, in particular a cargo ship, having a power supply system. The invention relates in particular to a ship having a plurality of diesel electric systems for providing electrical power that are disposed within the ship, wherein a plurality of diesel electric systems are each associated with a common opening for removing the diesel electric systems. The invention further relates to a power supply system for a ship and to a method for controlling the power supply system of a ship.

An inflatable habitat using inflatable structures and necessary accessories offers secure permanent human settlement in an environment such as Mars with an air pressure below the earth's atmospheric pressure. Built upon a crater, the inflatable structure comprises various resilient multilayer roof segments integrated with segment frames to contain extreme internal inflation pressures to provide habitability, maintenance of thermal environment, and low-cost manufacturability using local resources. The roof of the inflatable structure is firmly secured along a rim and a floor of the crater through a wall anchor system and a dual internal roof anchor system to provide a durable structure against hostile weather conditions. A “smart design” using the wall anchor system allows the installation of an outer roof in parallel to the existing roof. Further, a magnetic radiation shield generated through roof power elements externally encloses the roof to facilitate optimal active protection against solar and / or cosmic radiations.

The invention discloses an inverted-V-shaped empennage connecting structure convenient to dismount and mount. The tops of a left V-shaped empennage and a right V-shaped empennage are connected througha horizontal connecting wing section, and an assembling separating plane is perpendicular to a V-shaped empennage mounting angle adjusting shaft; the ends of the V-shaped empennages are provided witha reinforcing rib which is connected with a V-shaped empennage front beam web plate and a V-shaped empennage rear beam web plate through cornual plates, and the reinforcing rib are flanged to increase the connecting area of the reinforcing rib and a skin; a main force bearing part of the horizontal connecting wing section is a front connecting box and a rear connecting box, the front connecting box and the rear connecting box are connected as a whole through a bottom plate and then connected with the V-shaped empennage reinforcing rib through bolts to form a closed type structure; a connecting wing section skin and an inverted V-shaped empennage skin are smoothly transitional, the upper surface of the horizontal connecting wing section is provided with an opening cover, and dismounting and mounting of the bolts are convenient; and the V-shaped empennage reinforcing rib is provided with a bolt connecting groove, and the V-shaped empennage mounting angle can be changed by adjusting positioning of the bolts. According to the inverted-V-shaped empennage connecting structure convenient to dismount and mount, the requirement of the connection strength of the structure is met, the dismounting and mounting convenience, maintainability and adjusting flexibility of the structure are further taken into account, the aerodynamic efficiency of the inverted-V-shaped empennage is improved, and the inverted-V-shaped empennage connecting structure convenient to dismount and mount is very suitable for detachable multi-task light and small type inverted V-shaped layout unmanned aerial vehicles capable of being dismounted and mounted.