Дефлектор струйного взрыва Madec Si & Si, дефлектор забора [Silen & ЕМА]

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Product Overview




"Madec" Si&Si Deflector Jet Blast Deflector Fence


Our fences against jet blasts protects not only vehicles and equipment from the stream of gases expelled by engines’ planes but also people. It also acts as acoustic screen and so it diminishes the impact of the plane’s dangerous noises on human hearing system.


“Madec” Si&Si deflector, reduces blast speed up to 90% and redirects upwards (nearly vertical). It also accomplishes ICAO (International Civil Aviation Organization) recommendation on minimum visibility through it. So that users can see and prevent
every possible excessive approach of the planes itself or other vehicles.


Our blast fences are designed, built and proved for:

• Wide-body aircraft types.
• Jet blasts speeds ranging between 50 and 60 m/s and temperatures up to 60°C.


Data regarding planes and also location and conditions behind every deflector are taken into consideration in its design, manufacture and assembly in order to provide the adequate degree of protection.


Tolmien and Göertler models are considered in determining the jet blasts characteristics, because both have been widely confirmed for the jet engines gases unload on a flat and rough surface, as it is a non-paved soil.


Upwards deviation of the horizontal jet blast coming out from a plane engine interferes the part of the flow that eventually passes above the fence and so mobilizing air masses that deviates cool down and decelerate the jet blast.


The fence effect depends closely of its distance to the engines and the power regime of these ones.


The aerodynamical behaviour of the deflector has been analysed in the Test Bench for Aeronautic Engines Development of the Spanish National Institute of Aeronautical Techniques (INTA). It was proved that jet blasts fulfils the stable and laminar flow requirements once they have passed the deflector mesh cell.




"Madec" Si&Si Jet Blast Deflector Fences

  • It deviates upwards the exhaustion gases jet blast when the fence is crossed.

  • It scatters the gases jet blast Jet blast and diminishes the annoying low frequency of
    the noise’s spread spectre.

  • No any additional noise sources are generated during jet blast collision with the deflector

  • It can be more than 20 m height and they are designed, manufactured and installed accordingly with every particular location and its specific operating conditions.

  • It can be uninstalled and reassembled on other sites with a high degree of use of the components and without the requirement of special maintenance.

  • It allows enlargements without extra charges in the case of new operational necessities.

  • The “acoustic transparency” of the deflector barrier provides an additional security factor because no sound reflexions are generated at the rear zone of the plane.

  • Personal security is maximized once the visibility through the fence’s deflector mesh is made feasible, as it is recommended by ICAO (International Civil Aviation Organization).

  • Madec Si&Si barriers are lighter and so they are not only easier of manufacturing and assembling but also cheaper.

Jet engine fases flow behaviour








The best way to soundproof with our silencers, doors and acoustic panels for the best insulation. logo.JPG


At SILEN and SISTEM (acoustic engineering company), we manufacture special attenuators and silencers for the entire industry, whether for engine exhaust, generators, steam discharge, ventilation, pumps, compressors, etc ... We have the best materials for insulation and the best doors with all the guarantees, prestige and efficiency on the market. We ship all over the world, with removable systems to reduce transportation costs and remain very competitive. (Ask us for references).


Thanks to our extensive experience in the engineering and acoustics sector, we carry out professional studies, which together with the best products on the market, we manage to offer solutions to the most complex and difficult noise problems.


Solutions for the most complex noise problems with full guarantee prior to the execution of the solution.


We supply turnkey solutions, complete soundproofing packages for high-tech equipment on ships, silencers in gas turbine installations for the energy, chemical, petrochemical industries, etc. Acoustic cabins and Power flow silencers for gas turbines, diesel engines of application to Cogeneration. Silencers for oil exploration platforms, compressors, transformers, valves, etc.

Our silencers and acoustic enclosures provide a significant reduction in noise in industrial processes.


We also design and manufacture acoustic barriers for application in industrial plants, highways and roads.


We offer the design and manufacture of special silencers to measure, for gas and fluid discharge with up to 50 dB (A) attenuation. We manufacture, design and install special silencers for engines, compressors, roots pumps, turbines and ventilation systems up to 50 dB (A) attenuation.


We carry out all kinds of industrial soundproofing, cabins, enclosures and acoustic doors.

Modeling and prediction of acoustic impact through measurements and with different solution proposals.

Most importantly, our acoustic engineering company offers a TOTAL WARRANTY prior to the execution of the solution.




Asturex gives profesional and personalized assistance on international trade to asturian companies and sectorial associations. Also cooperates with associations, institutions and companies all over the world. In our Alibaba Site you will find a virtual catalogue of industrial asturian companies.






Asturias is located on the north-west Iberian peninsula, at the very heart of Green Spain. It is home to over a million inhabitants and is one of the 17 Autonomous Communities that form the state of Spain. It is a member of the European Union and a member state of the Euro Zone.


The climate in Asturias is Atlantic, with mild temperatures throughout the year. With 354 km of coastline, it naturally lends itself to being an ideal place to visit and live. The region is characterised by its extraordinary natural beauty, with breath-taking beaches and vast wooded areas, with a third of the land declared a natural protected area.


All these components make Asturias a “Natural Paradise”. Asturias also offers an excellent quality of life, with bustling cultural activity, a rich artistic heritage and ideal conditions for playing a whole host of sports.


There are three branches of activity that produce around 87 % of the turnover in Asturias and 82 % of industrial employment:

- Metal Industry

- Extractive industries, energy and water

- Food and agricultural industry



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