Abstract:
A press device for shaping or flattening a long panel by giving it, at substantially every point, a predetermined curvature either transverse or longitudinal, or both at once, or in a single direction at an angle in relation to the length of the panel. The press device has a frame press carrying a moveable punch and the frame spans a table. Above the table extending on either side of the frame press is an overhead beam supported at its extremities by two portal members, the beam carries a pair of carriages provided with depending brackets able to grip the opposed ends of the long panel as it is shaped or flattened by the punch of the said frame press. Both the punch and the table under the frame press may be provided with displaceable rails. The displacements inter alia of the panel and the punch are accurately controlled and displayed on a display board. The press is also provided with a long table beneath and in line with the said overhead beam, the table being provided with moveable rollers and gauge support means for checking the shape of the panel by metrology.
Abstract:
Polyvariant alloys which comprise a matrix and a directional reinforcement phase imbedded in said matrix in form of chromiumfree mono-crystalline particles of carbide. The method for the manufacture of such alloys involves zoning a rod under determined conditions of movement rate and thermal gradient at the solidification interface of the rod.
Abstract:
Logic system for controlling a missile in flight comprising four deflecting surfaces actuated between two positions, by the means of three binary signals, the eight arrangements of said binary signals, on an electric or electronic circuit, including OR and AND gates and NOR gates, determining the order in yaw or pitch in association with possible roll control for fetching a reference plane.
Abstract:
System for rapidly training operators required to accurately aim an optical instrument at a stationary or moving target. It consists in equipping the optical aiming instrument handled by the trainee with a television camera to which is associated a reticle the optical axis of which is sighted with that of the optical instrument. A device for displaying the images analysed by the camera and reticle is available to an instructor so that this latter may give useful advice to the trainee during his aiming operations.
Abstract:
Two enclosures are separated by a diaphragm; one of them contains means for producing a beam of primary ions and the other contains means for focusing the beam of primary ions and the secondary beam emitted by the sample. Means for scanning the sample with the primary beam are provided. The device enables high resolution in spectral analyses.
Abstract:
A welding machine for fabricating metal sandwich panels having corrugated core, comprising a set of rules for offering up the core, TIG welding blowpipes positioned in a channel at the location where the core is covered with skin strip, HF-ignition welding generators, HF generators in immediate vicinity to the blowpipes, a weld sequencing block, said machine being disposed in order that the core strip is covered subsequent to being corrugated and is then welded beneath the TIG welding blowpipes, electrodes being positioned outside the core.
Abstract:
A system for measuring fatigue damage in helicopter blades is based on a determination of the number of force cycles to which the blade is subjected and on the amplitude of the force experienced in each cycle.
Abstract:
The cooling system is by phase transition in circulation in a closed cycle of a cooling fluid. The blade includes several closed elemental cavities, the wall of each elemental cavity including at least one continuous stria extending over its length along a helicoidal track. It is useful for aircraft gas turbine blades.
Abstract:
A RESIN BATH MEANS FOR HEATING SAID CHAMBERS, AND DRAWING AND WINDING MEANS.
IMPREGNATING APPARATUS IS PROVIDED WHICH INCLUDES A SUPPORT FOR AT LEAST ONE SPOOL OF YARN TO BE IMPREGNATED AN IMPREGNATING UNIT FORMED BY TWO CHAMBERS WITHIN A SINGLE ENCLOSED SPACE, A FIRST CHEMICAL PROCESSING CHAMBER AND A SECOND CHAMBER FOR PROVIDING MECHANICAL PROCESSING IN CONJUNCTION WITH A DIPPING OF THE YARN OR YARNS INTO
Abstract:
THE METAL PIECES TO BE TREATED ARE EMBEDDED IN A REACTIVE MASS CONTAINED IN A PARTLY GASTIGHT BOX PLACED IN A HEATING VESSEL WHEREIN THERE IS ANAT LEAST PARTLY HYDROGENATED PROTECTIVE ATMOSPHERE. THE REACTIVE MASS COMPRISES AN INTIMATE MIXTURE OF (1) A POWDER ALLOY OF CHROMIUM AND ALUMINUM, (2) AN INERT POWDERED DILUTING COMPONENT AND (3) A HALOGEN-CONTAINING COMPONENT. THE BOX AND ITS CONTENTS ARE HEATED TO 1050*C.-1100*C. FOR A FEW HOURS, THEN COOLED. THE STARTING CHROMIUM POWDER FOR THE CHROMIUM-ALUMINUM ALLOY POWDER MAY BE OF EITHER MAGNESOTHERMIC OR ELECTROLYTIC ORIGIN AND AT LEAST THE ELECTROLYTIC CHROMIUM IS SUBJECTED TO AT LEAST ONE PRETREATMENT, PRIOR TO ALLOYING, BY EXPOSURE TO EITHER MAGNESIUM OR CALCIUM VAPOR TO SUBSTANTIALLY REDUCE THE AMOUNT OF FREE OXYGEN ON AND IN THE CHROMIUM GRAINS.