Abstract: A method of assembling together, without welding, first and second pieces of plastically deformable material, said method comprising: in a first step, making a rim hole in the first piece, the hole having a rim with an inside diameter D2i and an outside diameter D2e; a step of making a counterbored hole having two successive diameters in the second piece, said counterbored hole having a first section of small diameter d8 and a second section of large diameter D8, the small diameter d8 being greater than the outside diameter D2e of the rim; a step of inserting said rim into said counterbored hole, an annular gap being defined between the outer annular face of the rim and the inner annular face of the second section of the counterbored hole; and a step of deforming the end portion of the rim so as to occupy at least part of the annular gap; said method comprising prior to the step of deforming the end portion of the rim, a step of inserting centering means in the rim hole, the centering means having a diameter

Abstract: A system is disclosed for steering a missile by means of gas jets, comprising a gas generator connectable to at least a pair of lateral nozzles via rotary valving means, movable under the action of drive means and controlling the passage of the gases through said nozzles whereinwith each nozzle is associated an individual rotary valving member;each valving member is controlled in rotation by the piston of a jack, one chamber of which receives a part of the gas generated by said gas generator, the position of said piston being controlled by controlling the flowrate of said gas through said chamber;the chambers of said jacks, opposite those receiving said gas flows, are connected together by a coupling circuit containing a pressurized incompressible fluid; andthe volume of said pressurized incompressible fluid is chosen so that one of the valving members may be in the completely open position of the associated nozzle, whereas all the other valving members completely close the nozzles which correspond thereto.

Abstract: A system is disclosed for steering a missile by means of gas jets, comprising a gas generator connectable to at least a pair of lateral nozzles via rotary valving means, movable under the action of drive means and controlling the passage of the gases through said nozzles. According to the invention:with each nozzle is associated an individual rotary valving member;each valving member is controlled in rotation by a piston dividing a jack into two chambers of different cross sections, said chambers each receiving a part of the gas generated by said gas generator, and the position of said piston being controlled by controlling the flowrate of said gas through the chamber with largest cross section, andthe two valving members are connected together by a mechanical connection so that, when one valving member rotates and tends to close the associated nozzle, the other valving member rotates by the same angular amplitude and tends to free the associated nozzle.