Abstract: The present invention falls within the scope of soundproofing structures for aircrafts, disclosing a double-sided noise barrier suitable for ground run-up enclosures. Therefore, it is proposed a support structure formed by two side surfaces, each side surface having sound insulating plates mounted thereon, providing a 360° soundproofing space around it. By means of the technical advantageous provided with the use of a double-sided noise barrier, the present invention discloses GRE structures which incorporates such barrier, that enable optimization of space in the assembly of a set of individual GREs.

Abstract: The present application relates to a sound insulating panel, suitable for use as a deflecting surface in jet blast deflectors. Therefore, it is described a jet blast deflector fence, comprised of detachable sound insulating panels, forming a modular deflecting and noise absorbing surface, covering its entire frontal area that is aligned with the aircraft. This approach favours not only the maintenance procedures of the fence, but also allows noise absorption, in addition to redirecting the high energy exhausted from a jet engine.

Abstract: The present invention falls within the scope of soundproofing structures for aircrafts, typically existing in airports or any infrastructures for aircrafts. For testing and servicing of an aircraft, the latter must be placed under extreme conditions, which generate high noise in its vicinity. This invention is aimed at insulating the noise of aircrafts of any size, by expanding an existing expandable installation. It is therefore the object of the present invention an expandable soundproofing structure for aircrafts, comprising at least one front barrier (1) and two side barriers (2), wherein each side barrier (2) extends in a given direction and is arranged in such a way towards one of the ends of the front barrier (1) that the angle formed between each side barrier (2) and the front barrier (1) is greater than 90° and the free ends (3) of each one of the side barriers (2) are suitable to be expanded.

Abstract: An adjustment system for connections between metal structures which consists of two plates. The adjustment system comprises a first plate (1) provided with four radial slits (4), where one part of the structure to be connected can be joined, and a second plate provided with four circular slits (5) where another part of the structure to be connected can be joined. Joining screw pins (3) pass through the radial slits in plate (1) and through the circular slits in plate (2) in order to join the two parts by means of the corresponding nuts (6) which tighten the said plates together. The adjustment system makes it possible to adjust the position of the two plates (1 and 2) with respect to their movement on axes X, Y and Z.

Abstract: The present invention relates to an adjustment system for connections between metal structures which consists of two plates. It is essentially characterised in that it comprises: a plate (1) provided with four radial slits (4) where one part of the structure to be connected can be joined; a second plate provided with four circular slits (5) where another part of the structure to be connected can be joined; joining screw pins (3) which pass through the radial slits in plate (1) and through the circular slits in plate (2) in order to join the two parts by means of the corresponding nuts (6) which tighten the said plates together, it being possible to adjust the position of the two plates (1 and 2) with respect to their movement on axes X, Y and Z.