Abstract: The method includes a step of acquisition of an image of the leading aircraft, a step of extraction of the outline, an adjustment step including implementing an outline registration algorithm, to determine an optimized profile from a comparison of the outline of the leading aircraft with a profile of the leading aircraft determined from a three-dimensional model of the leading aircraft and from an initial position of the following aircraft with respect to the leading aircraft, and a step of determination of the positioning according to six degrees of freedom of the following aircraft with respect to the leading aircraft, from the optimized profile and from the three-dimensional model of the leading aircraft. The method thus makes it possible to rapidly and accurately determine the positioning of the following aircraft with respect to the leading aircraft, this positioning being used to implement a formation flight.

Abstract: The disclosure relates to a bunk, in particular for a vehicle cabin. The bunk comprises a base plate, an upper layer, a plurality of supporting members vertically compressible and spaced apart from one another substantially over the whole surface of the bunk, a plurality of pressure sensors which are part of the upper layer and in an adaptable area comprising at least one area of the bunk, a moving mechanism configured to move at least some of the supporting members in the adaptable area parallel to the base plate, and a control unit connected to the pressure sensors and the moving mechanism. The control unit is configured to cause the moving mechanism to move the supporting members in the adaptable area as a function of the current pressure data provided by the pressure sensors, to locally change the density of the supporting members to provide a locally variable bunk firmness.

Abstract: The invention relates to a cast wall constituted by a succession of panels touching via their end edges and made by casting a binder in contiguous lengths of trench dug in the ground in line with one another, each panel including reinforcement, said wall further including link means between the reinforcements in two contiguous panels. The link means (24, 44) are separate from the reinforcement (22, 42) and comprise an anchor element (24) having a first end fitted with at least one vertical first locking element (28, 30) and a second end engaged in one of said panels (22), and a link element (44) having a first end provided with at least a second locking element (46, 48) suitable for co-operating with the first locking element, and a second end engaged in the other one of said panels (42).

Abstract: The invention relates to a device for affixing cutter drums on an apparatus designed to cut trenches in the ground.The driver includes a revolving plate 4 disposed perpendicular to its axis and to the end of the latter, the plate having on its periphery a convex polygonal shape 9. A cutter drum 8 is provided with a portion 8a including a central hollow of concave polygonal shape 10 corresponding to the convex polygonal shape 9 of the plate 4 and of slightly greater dimensions. Bolts 11 unite the cutter drum 8 to the said plate 4 such that the rotational driving of the cutter drum 8 by the plate is performed through the medium of the aforesaid polygonal surfaces 9, 10 which come into engagement with one another.

Abstract: A cutting machine for cutting trenches in the ground, including a flat bottom face portion for supporting a pair of motor blocks; two motor blocks, with parallel axes, adapted to mount half-drum cutters; each motor block comprising a central vertical keel projecting downwardly from a horizontal top plate; connection means securing each motor block top plate to said bottom face; the inner edge of each top plate being provided with a beveled surface; an abutment member having parallel beveled edges complementary in shape to the beveled edge of each top plate; means mounting said abutment member to the central portions of said bottom surface; locking means urging the beveled edge of each top plate against the beveled edges of said abutment member.