The Liebherr Group is a large German equipment manufacturer based in Switzerland specializing in cranes, aircraft parts, and mining, with 8.3 billion euros in revenue for 2011. It has a workforce of 35,333 and comprises more than 130 companies across all countries. By 2007, it was the world's largest crane company. Established in 1949 by Hans Liebherr, the group's entirely family-owned Bulle, Switzerland-based holding company, Liebherr-International AG, of which Isolde and Willi Liebherr are the chief executive and chairman. In 2005, Forbes magazine listed them as billionaires.Starting by building affordable tower cranes, Liebherr expanded into making aircraft parts - it is a significant supplier to Europe's Airbus plane maker - and commercial chiller displays and freezers, as well as domestic refrigerators. The group also produces some of the world's biggest mining and digging machinery, including loaders, excavators and extreme-size dump trucks. The T 282 B is the world's biggest truck. The group's nine-axle mobile crane, the LTM 11200-9.1 - with a 100 metres telescopic boom - in 2007 received the heavy-lifting industry's Development of the Year award, by dint of being world's most powerful such machine.Over the years, the family business has grown into a group of varied companies and has locations in many countries, including Germany, Australia, Britain, Ireland, and the United States. Since 1958, its Irish factory in Killarney, Co. Kerry has built container cranes, exporting them worldwide through the port of Fenit. In Australia, the group in 2013 commenced a $65 million expansion of their local headquarters in Adelaide. The development includes adding a new three-storey office, workshops, warehouse, component plant, and distribution centre to the Para Hills facility. In the U.S., the group in 2012 started spending $45.4 million on a three-year renovation and expansion of its Newport News, Virginia factory, offices and warehouse. The company sought to increase its production there beyond 100 mining trucks a year. On 19 February 2013, representatives from the Commonwealth of Virginia and the cities of Newport News and Hampton announced that they would make grants and incentives available for transport improvement, training, and property investment.In April of 2014, Liebherr announced they would invest 160 million euros at its production site in Bulle, Switzerland. Wikipedia.
Liebherr - Aerospace | Date: 2017-07-26
The present invention proposes an air conditioning system for an aircraft powered solely using electrical energy, intended to draw air in from outside the aircraft and deliver conditioned air to the interior of the aircraft, comprising at most three motorized rotary machines made up of: - a first and a second motorized turbocompressor (11, 12) which are independent of one another, each motorized turbocompressor being formed of a compressor (14, 15), of a turbine (20, 21) and of an electric motor (17, 18); and - a motor compressor (13) interconnected between the motorized turbocompressors (11, 12) via an interconnection pipe and formed of a compressor (16) and of an electric motor (19), and in which the motor compressor (13) is designed to: - generate a primary air flow, which entrains a secondary air flow, allowing a flow of air for breathing to be cooled in a first phase of operation corresponding to a phase of operation on the ground or at relatively low altitude and at relatively low aircraft speed; - be at shutdown or at low idle in a second phase of operation at relatively low altitude and relatively high aircraft speed; and - provide a top up flow of air for breathing in a third phase of operation at relatively high altitude and relatively high aircraft speed. Figure 1
Liebherr - Aerospace | Date: 2017-07-26
The present invention relates to a compression device (1) including at least: - two interleaved scrolls (3, 5) each of which is made of an aluminum alloy, wherein one of the scrolls, referred to as the fixed scroll (3), is fixed and the other scroll, referred to as the orbiting scroll (5), moves eccentrically without rotating, and - anti-rotation means made of an aluminum alloy and suitable for allowing anti-rotation of the orbiting scroll (5), characterized in that it further comprises, at least: - a flat thrust bearing (7) suitable for axially retaining the orbiting scroll (5) and made of a material selected from a set of materials including aluminum alloys or grades of cast iron, and - coatings for promoting friction between the fixed scroll (3), the orbiting scroll (5), and the anti-rotation means and the flat thrust bearing (7).
Liebherr - Aerospace | Date: 2016-07-05
The present invention relates to health monitoring of an actuator in a flying device. The same comprises a processor unit for processing data and for operating a system model of the actuator 30, at least one sensor 151, 152, 153, 154, 155, 156 for detecting a correcting variable of the actuator 30 and a memory unit 54 on which characteristic data on the actuator 30 are deposited. The processor unit is designed to carry out health monitoring on the basis of the system model with reference to the correcting variable of the actuator 30 and the characteristic data of the memory unit 54. Advantageously, the processor unit is identical to the processor unit of an electronic control system 50 of the actuator 30.
Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: AAT.2013.4-6. | Award Amount: 26.47M | Year: 2013
Thermal behaviour of aircraft has recently become a crucial subject due to many factors: increasing number of complex systems required by modern, more electric, commercial aircraft, the introduction of hotter engines with higher by-pass ratios, the increased use of composite material in aircraft structures, or the confinement of highly dissipative equipment and systems in smaller areas to earn space for passengers and cargo. New advanced techniques to manage the aircraft thermal behaviour at the very early stages of development are essential to take the right configuration decisions while meeting market demands. To work efficiently and on emerging innovative solutions, it is essential to perform thermal management at the global aircraft level. Today, thermal studies are performed for sizing and risk analyses. The TOICA project intends to radically change the way thermal studies are performed within aircraft design processes. It will create and manage a thermal aircraft architecture which today does not exist. This will be shared in the extended enterprise with design partners through a collaborative environment supporting new advanced capabilities developed by the project, namely the architect cockpit, which will allow the architects and experts to monitor the thermal assessment of an aircraft and to perform trade-off studies. Super integration will support a holistic view of the aircraft and allow traditional design views and the related simulation cascade to be challenged. Six use cases illustrating new thermal strategies will demonstrate the benefits of the TOICA approach on realistic aircraft configurations. Plateaus will be organised with architects for the definition, selection and evaluation of thermally optimised aircraft configurations. These plateaus will drumbeat the project. In parallel, technology readiness evaluations will assess the maturity of the developed technologies and support the deployment and exploitation of the TOICA results.
Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: AAT.2013.4-7. | Award Amount: 39.83M | Year: 2013
In search for a more competitive, multiple types of aircrafts, IMA based, avionics platform solution, the European aerospace industry has recently initiated the IMA2G paradigm thanks to the EC funded SCARLETT project. This latter successfully validated a first underlying set of IMA2G concepts (Separate Core Processing resources from I/O resources, introduce resource segments typology of electronics solutions, provide platform services layer to function supplier etc.), thus creating the expected Distributed Modular Electronics (DME) breakthrough to lay IMA2G solid rock foundations. The goal of the work within ASHLEY is to go on carrying out research on top of the existing SCARLETT state-of-the-art in areas where innovations are likely to make the most of DME growth potential : Extension of DME concepts and solutions to other aircraft domains especially the open world domain, leading to the definition of DME security components. Common remote I/O resources typology including high integrity, time critical remote solutions. Multi-domains, secured Data Distribution services to streamline aircraft data distribution. Development of an efficient system designer oriented IMA2G Tooling Framework solution that remains compliant with IMA2G industrial and certification constraints. Development of a generation of digital i.e. smart sensors based on new advanced photonics technologies. ASHLEY innovations will be supported by advanced processes, methods and tools for an efficient implementation in the future and validated thanks to the ASHLEY Large Scale aircraft representative Demonstrator. By progressing as described above the European Industry will be in a position to offer a common secured multi-domain avionics platform solution across a worldwide range of aircraft types, at a higher level of maturity at entry into service.
Liebherr - Aerospace | Date: 2016-04-29
A multilayer coating obtained by carrying out the steps of (1) applying a ZnNi layer to a substrate material, in particular to a steel; (2) carrying out a first heat treatment in a temperature range from 135-300 C., preferably from 185-220 C., for a time period of at least 4 hours, preferentially of at least 23 hours; (3) applying a metal-pigmented top coat to the ZnNi layer; and (4) carrying out a second heat treatment in a temperature range from 150-250 C., preferably from 180-200 C., for a time period of at least 10 minutes, prefer-ably of at least 20 minutes, preferentially of at least 30 minutes.
Liebherr - Aerospace | Date: 2016-07-13
According to the manufacturing method of the invention the line component. In particular an additively fabricated line component, comprises a line element for conducting a fluid from a first opening to a second opening, and a line branching connected with the line element for conducting the fluid to a third opening, wherein an outer region of the line component is designed load-compliant by means of a numerical optimization program and thereby includes a multitude of irregular topological structures in its outer region. In the manufacturing method of the line component a notch is incorporated on the inside of the line element, which serves to relieve a tension in a highly loaded state of the line component or the line element, a particle-filled gas stream is guided through the interior of the line component, in order to smooth the inside of the line component and/or the line component is subjected to a pressurization, in order to produce a plastic deformation on an inner surface of the line component.
Liebherr - Aerospace | Date: 2016-05-19
A locking device of an aircraft landing gear for locking the landing gear in a retracted and an extended position. A locking cylinder is arranged on a landing gear leg and a locking bolt is movably arranged in the locking cylinder. In the retracted position and in the extended position of the landing gear the locking bolt serves to fix the landing gear leg.
Liebherr - Aerospace | Date: 2016-05-16
The invention relates to an air-conditioning system with a redundant feed of supply air comprising at least one pack which is supplied with air, with at least one valve being arranged in the feed for the air flow control. In accordance with the invention, an electrical flow control valve and a pneumatic flow control valve are arranged in parallel connection in front of the pack for the air flow control.
Liebherr - Aerospace | Date: 2015-12-16
A rail vehicle spring system has a spring strut, arranged between a bogie and carriage body of the rail vehicle, and includes a cylinder and a piston in the cylinder. Piston spaces are defined below and above the piston head. The piston or the cylinder is connectable with the bogie, while the other component is connectable with the carriage body. A spring cushions the body relative to the bogie, and a hydraulic system is connected with at least one of the piston spaces to charge the space with hydraulic medium. The spring surrounds the cylinder and is contracted by the piston when an excess pressure exists in the lower piston space with respect to the upper piston space, and an entraining element is adjoined by the spring. Only when an excess pressure exists in the lower piston space does the piston rod exerts a force on the entraining element.