Exploration of the universe
Mtex antenna technology joins forces with Liebherr to provide the next generation Very Large Array antennas (ngVLA). The ngVLA site will be the largest radio astronomy facility in the Northern Hemisphere with stations throughout New Mexico, Texas, and Arizona.
Cutting-edge technology, precision engineering, and a tireless commitment to scientific discovery, rockets the project to the forefront of astrophysical research, and Liebherr's components take over an important role in this.
Humanity has always been captivated by the stars, driven by an insatiable curiosity to understand the universe and our place within it. From ancient astronomers charting celestial paths with the naked eye to modern scientists employing sophisticated technologies, the quest to unravel the cosmos has accelerated our progress and expanded our horizons. Today, at the forefront of astrophysical research, driven by remarkable scientific breakthroughs, the development of the next-generation Very Large Array antennas (ngVLA) is taking shape. Developed by mtex antenna technology for the largest radio astronomy facility in the Northern Hemisphere, the National Radio Astronomy Observatory (NRAO).
"The ultra-sensitive imaging capabilities of these groundbreaking instruments will give us an unprecedented look into space and help unlock the secrets of the universe," explains Lutz Stenvers, managing director of mtex antenna technology GmbH. The new generation antennas, boasting a diameter of appx. 60 ft (18 m), will be positioned in a clearly defined pattern throughout North America. The area with a total of 244 antennas will cover approximately 620 miles. The special arrangement of the antennas will ensure optimal data reception from the cosmos.
"Cutting-edge technology, precision engineering, and a tireless commitment to scientific discovery, rockets the project to the forefront of astrophysical research," continues Lutz Stenvers, "and Liebherr's components take over an important role in this."
Precision: the seamless synergy of three elements
Crucial for the operation of an ngVLA are the components installed in it - a slewing bearing, two gear ring segments and azimuth drives. The slewing bearing is used for azimuth adjustment of the antenna to enable its precise positioning. This roller bearing has a diameter of appx. 11 ft (3.3 m). Its weight of 9,100 lbs. (4,128 kg) provides more stability. Also, its axial runout of 0.1 mm and radial runout of 0.05 mm plays a decisive role when it comes to precision. The slewing bearing is designed to be free of backlash, making it ideal for adjusting the azimuth of the antenna.
As a complimentary feature to the slewing bearing, the gear ring segment is of great importance for the elevation adjustment of the antenna, meeting the high demands on the gear quality. The two gear ring segments, each positioned on the sides of the horizontal antenna rotation axis, ensure its exact elevation adjustment.
In addition, the interaction of the azimuth drives with the slewing bearing enables a high degree of precision, with which the satellite systems rotate around the tower axis. The key is a low torsional backlash and increased stiffness of the planetary gears. These optimizations make the adjustment mechanism of the entire system operate with maximum accuracy, targeting precise positioning in the long run.
The elevation adjustment, which is responsible for the inclination of satellite dishes, uses the same drives as the azimuth adjustment, but with an adapted transmission ratio. The interplay of the two adjustment systems is indispensable for exact antenna alignment.
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Rigorous testing as a prerequisite for success
Prior to market introduction, Liebherr subjects the prototypes to comprehensive testing, including stiffness tests, for the azimuth and elevation drives not only to meet, but to exceed highest industry standards. The expertise built up over decades is crucial for the symbiosis of the slewing bearing, gear rings and slewing drives as a unit.
With a commitment to set forth precision engineering and innovation, Liebherr and mtex antenna technology shape the future of satellite systems and push forward satellite positioning technology.
