摘要:
The present invention relates to the field of manufacturing nanoparticles, and specifically to a method for manufacturing diamond nanoparticles, or nanodiamonds, by detonation at least one explosive charge, wherein said at least one explosive charge is nanostructured.
摘要:
A method of preparing organic or inorganic nanoparticles is useful in the manufacture of of fertilizers, pharmaceutical or phytopharmaceutical active ingredients, or insensitive energy materials. The method includes preparing a solution of a compound in a solvent, heating the solution under a pressure ranging from 3 to 300 bars at a temperature higher than the boiling point of the solvent, atomizing the solution in an spray drying chamber using at least one dispersion device and at an angle ranging from 30 to 150° under pressure ranging from 0.0001 to 2 bars, separating the solvent in gaseous form, and recovering the nanoparticles.
摘要:
A laser device includes an outcoupling mirror, a laser medium, a phase-conjugate mirror based on stimulated Brillouin scattering, and an end mirror all arranged along an optical axis of the laser device. A controllable modulator is positioned between the phase-conjugate mirror and the end mirror. The outcoupling mirror and the end mirror form a start cavity. The outcoupling mirror and the phase-conjugate mirror form a main cavity.
摘要:
This device comprises an electromagnetic coil (3) in which there is able to slide a piston (6) which has at least a portion made of a material having paramagnetic susceptibility and which is placed in contact with the mechanical member when the drive device (1) is in the rest state.Electrical energy supply means are provided in order to store electrical energy and to abruptly release this energy into the coil and thus apply the high-energy magnetic movement pulse to the mechanical member.According to the invention, the piston (1) comprises a stack (9) of blocks (11, 12) which are made alternately from the material having paramagnetic susceptibility and an insulating material; and the electrical energy supply means are provided in order to allow the energy to be applied to the coil in the form of a series of electrical pulses which appear as the piston (6) moves.
摘要:
A method, device, and projectile having a device for guiding or piloting projectiles or missiles (self-propelled or non-self-propelled), to deflect, in a direction Y, a hypervelocity projectile operating in a gas, such as a shell, a bullet, or a missile, having a nose, generally in the shape of a cone, with a more or less pointed tip, by generating a first high-voltage discharge able to produce a plasma over a first limited sector of the projectile surface and in direction Y, maintaining the plasma, and generating another low-voltage discharge able to supply the plasma with energy over a second limited sector of the projectile surface and in direction Y, the first and the second sectors being different and may overlap.
摘要:
The invention relates to the field of inertial navigation systems and in particular to a method for determining the attitude, position, and velocity of a mobile device from knowledge of the direction of the earth's magnetic field in an absolute reference frame and signals supplied to processing means (4) of these signals by gyroscopic measuring means (1) in three axes, accelerometric measuring means (2) in three axes, and magnetic measuring means (3) in three axes, said measuring means being located on-board the device and according to three three-dimensional reference frames connected to the device reference frame OdXdYdZd, and characterized by comprising: a first step in which the attitude of the device is calculated at time K−1 from: signals coming from the gyroscopic measuring means (1) at time k signals coming from the accelerometric measuring means (2) at time k+1 the position and velocity of the device in the absolute reference frame at time k signals supplied by the magnetic measuring means (3) representing the projection of the earth's magnetic field in the three-dimensional magnetic reference frame linked to the device, a second step in which the position of the device and its velocity in the absolute reference frame at time k+1 are calculated from: the attitude calculated in the first step signals coming from the accelerometric measuring means (2) at time k+1 signals coming from the gyroscopic measuring means (1) at time k the position and velocity of the device in the absolute reference frame at time k signals supplied by the magnetic measuring means (3) representing the projection of the earth's magnetic field in the reference frame.
摘要:
The present invention relates to a filtering procedure for recursive digital filters installed in signal processors (DSP) operating with integers. It comprises two calculation procedures coupled with the classical calculation procedure of a recursive filter, the first of which, when calculating the output value of the sample, takes into account the remainders of integer divisions by the scale factor, coming from calculating the output values for the previous samples, and the second of which replaces the default value from dividing the integer by a scale factor by the integer value closest to the result of actual division.
摘要:
In the field of devices employing stimulated emission, a long-range laser illuminator may include a matrix of high-brightness infrared emitters. Each emitter is able to emit a first beam. The illuminator may be able to process the first beams coming from emitters disposed opposite and in the vicinity of the matrix. The illuminator may also be able to assemble the beams into a second unique, homogenous beam. The illuminator may include a prism including a planar input face disposed opposite the emitter matrix and a planar output face, the latter being disposed opposite a collimation lens.
摘要:
The invention concerns the field of devices for improving the piloting of projectiles More specifically, the object of the invention is a piloting device for a missile or a projectile, for example, of small caliber, especially on the order of 40 mm, which has a lateral main surface with a nose at the level of one of its extremities, whereby said device includes at least one cavity consisting of a combustion chamber and filled, at least partially, by an explosive powder, and means of initiation of this explosive powder, and thereby the explosive powder includes nanothermites or gas-generating nanothermites.
摘要:
The invention concerns a process for the representation of a scanning function by means of a neuronal network and a device for the implementation of the process, whereby measurement values associated with a turbulent wave front, which contain phase information, are compared with reference values, with the result that the intermediate values thus obtained can be compared with comparison functions, in order, in the best case, to describe the measured pattern with a selection of comparison functions, whereby a neuronal network is trained in the comparison functions, so that the processing of the measured pattern can take place in near-real time.