Category Archives: Z-DAMPER

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Z-DAMPER, winner of the CLEAN SKY Best Project from Partners award

Z-DAMPER has been awarded the first price from 22 nominated Clean Sky projects as best example of successfully performed activities.



 CLEAN SKY is the largest research program funded by the EU Commission developing advanced technologies designed to significantly reduce C02 and NOx emission and noise levels. This week, the Clean Sky 1 Closing Event “Europe, Innovation, and Aviation: Are we keeping up?” was celebrated in order to report results and main achievements, pushed forward by a successful collaboration between private and public actors.

Z-Damper, awarded the 1st prize, is a clear example of successful collaboration between the high-tech engineering small company MAG SOAR, as project coordinator, and Universidad de Alcalá. Z-Damper has created and demonstrated a disruptive vibration killer technology with an optimum performance at extreme temperature.   

Main goals of Clean Sky are the developments of new efficient and clean aircraft engines. A key challenge was to damp effectively their vibrations and a new enabling vibration isolation technology was required. Z-DAMPER has developed a solution from the concept up to the experimental tests, including design, engineering, simulation, manufacturing of prototypes and a testbench for demonstration from -70 to 300 ºC. This acknowledgment underlines the potential of Z-DAMPER as a promising vibration isolation technology, not only for aerospace but also for industry, antiseismic, large structures and other defence applications.


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Z-DAMPER nominated to the Clean Sky Best Project from Partners Award

CLEAN SKY is right now the largest European research H2020 funded program developing innovative, cutting-edge technology aimed at reducing C02, gas emission and noise level produced by aircraft.  This nomination confirms the big potential of Z-DAMPER for the control of vibrations at high temperatures and low frequencies.

Z-Damper is a magneto mechanism that matches mechanical impedances and provides a multiplier effect damping vibrations of both low and high frequency ranges more effectively.

Z-Damper optimum performance at extreme environments made this magneto-mechanism the perfect vibration killer to be used in one of Clean Sky major projects: the new counter-rotating open-rotor (CROR) developed by Airbus. CROR fuselage-mounted turbofans need a level of isolation of vibrations in a high-temperature environment that current damping technologies are not able to reach.

MAG SOAR SL, in cooperation with Universidad de Alcalá, developed and tested two prototypes following Airbus requirements. "Z-Damper has demonstrated a unique damping performance, even in extreme temperature environments. We have insight the birth of a new vibration isolation technology which applications are only starting to be foreseen", stated Dr. Valiente, technical director of MAG SOAR and scientific responsible of the project.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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The birth of a revolutionary vibration isolation technology

Z-Damper is a vibration isolation system able to act as a dissipater and also to enhance the performance of any damping solution by mechanical impedance coupling.

This magneto mechanism is adaptable to low and high ranges of frequencies and it can substitute tuned vibration absorbers currently being used for the vibration control in automotive, energy or seismic applications.

Unlike other existing damping technologies, Z-Damper is capable of maintaining an optimum performance at extreme temperatures.

extreme temperature dampingThe EU funded FP7 Clean Sky program is boosting new technologies in order to improve safety and reduce the contamination levels of the aircraft systems. One of Clean Sky major projects is the development of a new counter-rotating open-rotor (CROR) engine capable of minimizing both noise and fuel consumption.

As the main project partner, Airbus is searching for technologies able to meet the exigent standards required for this large-scale project. Specifically, the fuselage-mounted turbofans need a very efficient isolation system to assure a reduction in the transmission of the vibrations to the aircraft structure. However, present damping technologies have a big limitation: they are not able to operate at the extreme temperature that the rotor engine may reach.

MAG SOAR in collaboration with Universidad de Alcalá has developed and tested three different prototypes specially optimized to reach Airbus requirements. Z-DAMPER project final meeting took place in UAH facilities. MAG SOAR and UAH researchers exposed to Airbus engineers the excellent vibration mitigation results obtained from the static and dynamic tests at temperatures up to 200ºC.Airbus-Z-Damper

Airbus, UAH and MAG SOAR teams were clearly satisfied by Z-DAMPER potential. "Z-Damper has demonstrated a unique damping performance, even in extreme temperature environments. We have insight the birth of a new vibration isolation technology which applications are only starting to be foreseen", stated Dr. Valiente, technical director of MAG SOAR and main project technical partner. 

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New damping technology based on mechanic impedance matching

Conventional vibration control technologies are still highly limited. Current damping systems fail to deal with low frequency ranges and extreme temperature scenarios.

In order to fill that gap MAG SOAR has developed a new technology able to enhance the performance of any vibration damping system by mechanical impedance coupling. Impedance is a term usually applied to electronics that represents the opposition or voltage that a circuit presents to a current; the equivalent to the resistance in direct current. Electrical engineers use transformers to multiply voltage and divide current or vice versa in order to adjust the circuit impedances and optimize the circuit power. The same concept can be defined for mechanical systems as Force to Speed ratio. However, up to now nobody has developed any effective analogue mechanical transformer to enhance the efficiency of a mechanical system.

Our ears: A perfect example of mechanical coupling

Surprisingly, nature offers a perfect example of mechanical impedance matching. Ears of most terrestrial animals are provided with mechanical impedance transformers. While the medium in the outer ear is obviously air, the medium in the inner ear is a liquid similar to water. Both of these elements present quite different mechanical impedances. Because of the difference in the impedances of the air and the liquid in the inner ear, an audition loss of about 30 dB should be expected. However, a set of small bones in the middle air (hammer, incus and stapes) compliantly attached, together with the different areas of the tympanic membrane and the oval window provides a mechanical advantage so that it compensates this audition loss. This mechanical impedance coupling is an example of mechanical transformer.

How does Z-Damper works?

Z-DAMPER follows the same working principle detailed on the paperZ-Damper: A New Paradigm for Attenuation of Vibrations”. This contactless magneto mechanism multiplies the input speed and reduces drastically the incoming force needed to achieve the necessary damping coefficient. Z-Damper technology can be used to control the vibration transfer in different mechanisms and to enhance other damping systems efficiency. It is also able to function at extreme temperature, higher and lower than any other damping system.

z-damper-diagram

 


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Z-Damper: A new technology for vibration control at extreme temperatures

Madrid-18/07/2016-MAG SOAR in collaboration with UAH develops a completely innovative system to face vibration problems by mechanical impedance matching

z-damper-magnetic-damper

 Vibration control of buildings, airplanes, cars and other kinds of systems and structures is an extremely important issue in constant evolution. Insufficient control of vibration propagation can cause the critical failure and ultimately, the total breakage of an structure. Devastated buildings after earthquakes are extreme examples of the consequences of out of control vibrations.

There are different forms to reduce, mitigate or suppress vibrations. The simplest way is to increase the elasticity of the ground connections between a moving machine and a stable surface. Multiple solutions have been developed with this purpose that go from elastic couplings to floating benches. All of them can provide a quite a good vibration isolation with an appropriate design. However, these are limited to normal temperature and relatively high frequencies. Moreover, these solutions usually involve a significative increment of weight.

MAG SOAR engineers have just designed a new vibration control technology able to handle extreme temperature conditions at low and high frequencies thanks to mechanical impedance coupling. Z-DAMPER is a zero-backlash magneto-mechanism that has been optimized for matching mechanical impedances in order to control vibration propagation in a structure. This is the first damping technology to reach temperatures as high as 250 ˚C and as low as -200 ˚C and able to cope with high dynamic forces. Besides, there is not contact between the movable members so it barely needs maintenance. All of this makes Z-Damper the perfect candidate for extreme temperature environments where lubrication and wear related problems can have catastrophic consequences.

Z-DAMPER can also be applied to enhance the efficiency of other damping systems, like tuned vibration absorbers, eddy-current dampers and particularly, those with a poor performance at low frequency vibrations. The working principle detailed in the recently published paper, Z-Damper: a new paradigm for attenuation of vibrations”