Abstract:
The present invention concerns: a metallic material that can be worn away by abrasion, principally consisting of a metal alloy based on nickel and/or cobalt which is (quasi) free of oxide or of a ceramic and having in its volume, particles of solid lubricant and/or closed pores and/or surface recesses; parts, in particular plates, formed from said material; casings the inner surface of which is at least partially covered with said plates; a process for producing said material.
Abstract:
A diffusion-brazing filler powder for a part made of a nickel-, cobalt- or iron-based alloy A comprising particles of a defined alloy material B having specific functional properties tailored to the area of application of said part. The particles are substantially spherical and carry, on their surfaces, in the form of incrustations, add-ons comprising at least one fluxing element taken from the group: boron and silicon, these encrusted add-ons also being present in a free state in said powder.
Abstract:
A simple and low cost method of replacing an abradable portion on the fan casing of a turbojet includes an inside heating belt together with holding sectors therefor are put into place against the abradable portion, each holding sector including an inflatable bladder, and the abradable portion and the inside heating belt being sandwiched in full between the fan casing and the bladders, the holding sectors themselves being held in place by a plurality of straps attached to the fan casing by fixing points.
Abstract:
In order to enable the information contained in an identification connector to be read in a manner that is more reliable, faster, and without risk of damage, the invention provides a reader appliance for reading identification connectors for airplane engines, the connector comprising a plurality of contacts connected to a decoding circuit, each contact corresponding to a binary digit, one or more of the binary digits corresponding to information relating to characteristics of the engine. The reader appliance comprises connection means suitable for receiving at least one identification connector, the connection means being connected to processor means responding to control members in order to display on a display device the information contained in the connector.
Abstract:
The invention relates to detecting damage to the rotor of an aircraft engine that includes means for measuring vibration and speed in order to acquire data relating to the speed of the rotor and also to the amplitude and the phase of rotor vibration during a determined flight. The method comprises the following steps: reading said acquired data; calculating a mean vibration vector over a determined rotor speed range on the basis of said acquired data; calculating a vector difference between the mean vibration vector of said determined flight and the mean vibration vector of a reference flight for said rotor speed range; comparing the modulus of said vector difference with a predetermined threshold value; and issuing a warning signal when the modulus of said vector difference exceeds said predetermined threshold value, said steps being performed after said determined flight has been completed.
Abstract:
The present invention provides: a material, which is dense, with a density of null90%, bulk dry self-lubricating, with a coefficient of friction of