Matra

About: Matra is a based out in . It is known for research contribution in the topics: Signal & Detector. The organization has 1330 authors who have published 1216 publications receiving 17967 citations.

Rotary displacement pump with smaller radial dimensions

Abstract: According to the invention the rotary pump consists of an external gear (13) with internal teeth (16) in the form of a squirrel cage, and an internal gear (9), housed in an off-centre manner in the interior of said external gear (13) and fitted with external teeth (9D) intermeshing with said internal teeth (16) and consisting of a number of inferior teeth of a unit with the number of teeth of the later. The rotation means of said external teeth (13) comprise at least a bearing (11, 12) centrally laid out in a flange end (14,15) of said aforementioned external gear (13) and the aforementioned external gear (13) is at least partly dismantled in order to introduce said internal gear (9).

Wheel set for a vehicle travelling on a guide path

Abstract: The wheel set comprises a pair of load-carrying wheels that run on a track, and that are steerable about parallel axes on a fixed portion, together with two pairs of guide wheels for bearing laterally against the track. The pairs of guide wheels are situated on either side of the load-carrying wheels, and they are carried by the same guide frame which is displaceable relative to the fixed portion only in rotation about a vertical axis. The guide frame is connected to the load-carrying wheels by a forced steering linkage for the load-carrying wheels. The fixed portion is constituted by a transverse box girder placed above the guide frame and provided with steering pivots for the load-carrying wheels, which pivots are placed beneath suspension cushions for the vehicle.

Optical sighting system

Abstract: An optical sighting system includes at least one optical channel with which there is associated at least one reticle. The reticle includes at least one mark which demarcates a blind spot, which is visible to an observer using the optical sighing system and which is centered approximately about a centering point that is situated substantially at a distance which is representative of a sighting angle of between 13° and 18°, with respect to a predetermined direction of observation along a first direction. This first direction is representative on the optical sighting system of the direction passing substantially by the centers of the eyes of an observer who is using the optical sighting system.

Protection device for the air inlet of a jet engine which is provided with an anti-icing system

Abstract: of EP0918149The cowling has an inner shell (27) which cooperates with the two partitions (20, 24) and the engine casing outer wall (9E) to form a chamber (28) enclosing the pipe (10). The outer wall also has air intake and outlet holes (34, 35), and the inner shell is detachable and fitted to the forward partition with an elastic seal (32). The ring cowling (9) is equipped with a de-icing system for its hollow leading edge (16), which has a peripheral chamber (21) formed by a partition and having one or more holes linked to the outside atmosphere. The de-icing system has a pipe (10) with its rear end passing through an additional inner partition and connected to a pressurized hot air circuit (14), and equipped at its forward end with an injector (12) delivering hot air to the chamber.