FIELD: astronautics, in particular, systems for astro-correction of launch azimuth of carrier rockets.
SUBSTANCE: claimed device is used for launch azimuth correction of position of gyro-stabilized platform of carrier rocket control system and contains optical objective and photo-sensitive section positioned on aforementioned platform. The platform consists of at least two photo-detectors with different spectral characteristics and a scanning element, made in form of piezo-element with rounded reflecting end. When scanning element oscillation is low, any beam after the objective is reflected from rounded surface and received on a single photo-detector. That moment depends on position of a star relatively to finder axis of objective and on sweep path. When sweep is stable, the moment of appearance of signal from photo-detector inside the sweep period is rigidly connected to position of aforementioned beam, and position of finder axis is fixed when device is positioned on gyro-stabilized platform. When two photo-detectors are used with different spectral characteristics, it becomes possible to correct position of gyro-stabilized platform on basis of two spectrally different navigational stars. It is possible to install the device directly on the gyro-stabilized platform of control system of carrier rocket and to precisely aim the rocket at active flight section after comparatively rough aiming based on launch azimuth during pre-launch preparation, which results in simplified and cheapened ground-based aiming system, and allows to remove errors in launch azimuth caused by time difference between launch of engine block of first step of rocket and its release from launching device.
EFFECT: reduced mass and size of astro-finder device, increased reliability of its operation.
The invention relates to space exploration, in particular, to systems astronomicly azimuth launch boosters.
The aim of the invention is to reduce the weight and size Ostrovityanova device (AVA) and the increase in reliability that would allow the ABA directly on gyrostabilization platform (GSP) management system booster and domiciliate a missile in boost phase of flight after a relatively coarse aiming in azimuth start during pre-training. This will also simplify and reduce the cost of ground system and aiming to eliminate fatal for any ground aiming error in the azimuth of the start associated with a gap in time between the start of the propulsion system of the first stage of the rocket and its separation from the launcher.
The invention consists in that the photosensitive part (FCC) AVA is performed on the basis of the scanning piezoelectric element and a single photodetector.
Analog is AVA using the holographic method design (see Mathematical modelling of processes and systems on a computer: Win, TSITSKA, 2003, http://svarka.susu..ru/library/study/mathmodel/index.html. - section 8, p.).
The prototype selected AVU CCD in the role of a sensor (see Mathematical modelling of processes and systems to e is M: Van, CIT SSGA, 2003, http://svarka.susu.ac.ru/library/study/mathmodel/index.html. - section 8, p.).
These design options AVA have several disadvantages, among which the first, the presence of mechanical moving parts, which reduces the reliability of the device, and secondly the need for constant temperature control device, which increases the weight and size and, thirdly, the complexity of processing a received image or video.
The difference of the proposed device from the prototype is performed FCC, which contains the scanning element and at least two of the photodetector (AF). The scanning element is designed in the form of a piezoelectric element, rounded reflecting part of which is used as amplifier offset of the reflected beam, which is a similar device is a lowercase two-axis scanner (see SU 1219995 And (Popov E, and others), 1986). In this case, when the small oscillation of the scanning element of any beam after the lens is reflected from a curved surface, gets to the OP at the time associated with the position of the axis of the lens relative to the direction to the star and the characteristics of the scanner. The scanning piezoelectric element based on its primary property to change the geometric dimensions under the action of tension.
AVA is constructed and operates as follows.
The image of a star 1 star field generates the I lens 2 (figure 1) and is directed to OP 3 (conditionally shows one AF). In the focal plane of the lens 2 is a scanning spherical reflecting surface 4, attached to the piezoelectric element 5. Scanning creates a secondary piezoelectric effect, which occurs under the action of two periodic variable voltage Uxand Uyapplied through the sheath to the piezoceramic element and the respective axes X and Y sweep.
In the sweep of the rays from a star 1, passed through the lens 2, in some moments fall to the inputs of the OP 3. These moments are associated with the position of the beam from the star relative to the axis of the lens and the scan trajectory. As the scan is stable (stable Uxand Uy), the time of occurrence of a signal from the AF within the period of the sweep is rigidly connected with the position of the beam relative to the sighting axis of the lens, and the axis position of the lens is fixed placement AVA to SSE.
Figure 2 explains the work of the ABA with respect to one plane, for example, passing through the sighting axis of the lens 2 and the X-axis (or Y) scan at different positions of the stars(1, 1', 1"). The graph explains the appearance of the signal Ufthe output of the photodetector 3. Here Upthe sweep voltage UF1UF2and UF3- pulse illumination of the photodetector with a corresponding position of the stars and the reflective surface of the piezoceramic element.
When used, in which lastnosti, two OP with different spectral characteristics (for example, in the blue and red parts of the spectrum), it is possible to adjust the position of SHGs in two navigational stars, and or simply to improve the accuracy of correction of the azimuth, or to adjust the position of SHGs on two axes, as well as to expand the number of possible navigation stars.
Astrovision device for correcting the position of the gyro-stabilized platform management system booster in azimuth start containing placed on the platform of the optical lens and the photosensitive part, characterized in that the photosensitive portion consists of at least two photodetectors with different spectral characteristics and the scanning element made in the form of a piezoelectric element with a rounded reflective end.
FIELD: engineering of scanning devices, possible use for building an image of underlying surface from onboard the spacecraft simultaneously in several zones of optical radiation spectrum.
SUBSTANCE: multi-spectral scanning device, which contains serially connected control block, information transfer block and serially positioned optical system and photo-transformers matrix, consisting of N rows of photo-transformers, where orientation of each row of photo-transformers coincides with orientation of input slit and is perpendicular to flight direction of device carrier, additionally comprises N keys, variable magnification zoom lens, variable magnification zoom lens motor, motor of optical system with alternating focal distance, where output of photo-transformer matrix line number i is connected simultaneously to input of key number i, input of key number i is connected to input number i of information transmission block, and output of control block is connected to control input of each key directly, to input for controlling focal distance of variable magnification zoom lens through variable magnification zoom lens motor and to input for controlling focal distance of optical system with variable focal distance through motor of optical system with variable focal distance
EFFECT: increased efficiency of solution of double purpose, namely, research of Earth resources and surveillance of man-made objects by means of one device.
FIELD: optical tool-making, precise mechanics, possible use as device for controlling two spatial coordinates of various mechanical or optical elements for changing radiation direction of both coherent and regular light sources.
SUBSTANCE: in two-coordinate deflector, containing executive element, held on internal frame element, external frame element with electric motor for one coordinate, and base with electric motor for second coordinate, a new feature is the introduction of disk element with appropriate moving mechanical connections, leading to transfer of mass of electric motor from external frame element to the base. The type of mechanical connections makes it possible to practically realize the device with value of mechanical gap of executive element, limited only by gap of practical realization of mechanical connections. The transformer of rotary movement to oscillating movement in form "axis with local curvature - disk element" allows quality transformation of circular rotation of axis to angular movement in one plane with transformation coefficient, depending on the value of local angular axis curvature.
EFFECT: increased speed of operation of two-coordinate deflector due to reduced sluggishness of its elements.
FIELD: survey and search optical systems.
SUBSTANCE: fiber-optic scanner has rotating scanning device; there are forming objectives and motionless collectors disposed at both sides of scanner along optical axis. Edges of fibers of fiber-optic bundle and one central light-guide are mounted in any of two collectors along circle. Edges of fibers are turned to forming objectives; the other end of central of one collector is brought into coincidence with light source and of second one - with radiation receiver. Peripheral fibers of bundle from any collector are mounted in multiple arrays which are turned to area of scanning. Scanning device is made in form of rotating cylinder with two cone-shaped optical fibers. Any fiber at one of bases of cylinder is disposed in its center. Fibers have shapes of cones; cross-section of fibers decrease in direction of light pulse path. Objectives are mounted in such a way that image of corresponding optical a conjugated fiber is built in scale to be required for complete conjugation.
EFFECT: improved manufacturability at mounting and adjustment; reduced energy consumption.
FIELD: measuring equipment engineering.
SUBSTANCE: micro-mirror contains mirror plate, made with possible connection to controlling electrode, separating bearing frame for separating mirror plate from electrodes, support, connected to separating bearing frame and mirror plate, allowing mirror plate to turn relatively to separating bearing frame around the axis, set by support, while mirror plate, separating bearing frame and support are made of single continuous block of material.
EFFECT: increased reflective efficiency, long-term reliability and simplified manufacturing process.
3 cl, 14 dwg
FIELD: engineering of scanning systems, possible use for visualization of objects image on basis of their native heat emission.
SUBSTANCE: system has input objective, cylinder-shaped mirror positioned in focus of input objective in parallel to its optical axis, scanning mirror, mounted with possible rotation around axis, parallel to generatrix of cylinder-shaped mirror, projecting objective, micro-scanner, photo-detecting device. Output of photo-detecting device is connected to input of electronic block for signals processing and video-information display. Cylinder-shaped mirror is mounted so, that its generatrix forms 90° angle with optical axis of input objective in the point of their intersection.
EFFECT: improved quality of generated image, improved quality of possible engineering solutions.
FIELD: the invention refers to using of a laser emitter for scanning curved surfaces.
SUBSTANCE: a light of beam from a laser emitter is directed on the scanned surface. The forming of conical light surface is made by rotating of laser emitter for making on the scanned surface an image in the shape of a ring and the form of the surfaces is determined by shifting the ring along the surface with interpolation of points' height which are determined according to stated correlation.
EFFECT: scanning of long-length and large dimension surfaces.
FIELD: engineering of scanning devices.
SUBSTANCE: scanning device has scanning element, engine, power amplifier, digital-analog converter, adder, generator, and it additionally has frequency splitter, reverse counter, inductive angle counter in form of sinusoidal-cosine rotary transformer, analog-digital converter of sinusoidal-cosine rotary transformer to code, transformer of frequency to voltage, subtracting amplifier, first, second, third and fourth digital comparators, reverse sign trigger, device for setting mirror reverse angles codes, device for setting codes of beginning and end of frame and device for forming synchronization pulses for scanning.
EFFECT: increased linearity and stability of movement of scanning element.
FIELD: engineering of optic-electronic devices, possible use for controlling spatial position of light ray in different optic-electronic devices, for example, heat visors, for visualization of heat field normally invisible to human eye.
SUBSTANCE: method for pressing rotor of scanning device includes forming magnetic field by means of magnet-rotor and control windings, closing aforementioned field on smooth stator, magnetic field is deformed, transversely directed force is generated, applied to magnet-rotor and rotor is pressed in supports to body of scanning device. Particularity of method is that deformation of magnetic field is generated by means of inserting a magnetic-soft body into gap between magnet-rotor and stator, aforementioned body having high magnetic penetrability.
EFFECT: simplified magnetic pressing of rotor, improved manufacturability of scanning device, maintained direction of rotor pressing towards supports.
FIELD: optical engineering.
SUBSTANCE: optical deflector can be used in devices with optical-mechanical scanning of image for performing interlaced scanning. Optical deflector has framed mirror mounted onto base due to elastic member, piezoelectric ceramic bimorph member disposed in parallel to plane of mirror and supported as a cantilever onto the base. Free end of piezoelectric bimorph member is connected with peripheral area of mirror. Deflector additionally has restraint unit fastened onto mirror's frame and damping unit which has one end rigidly connected to the base. Free end of damping unit is connected with peripheral area of mirror through restraint unit and with free end of piezoelectric ceramic bimorph member mounted in restraint unit. Elastic member is connected with opposite peripheral area of mirror.
EFFECT: reduced load onto working end; improved vibration stability.
3 cl, 3 dwg
SUBSTANCE: device has light radiation source, deflecting device and optical image generation circuit, including optical element for forming an image, position so that when aligned to direction of additional scanning main beam of deflected light beam passes portion excepting optical axis. In first variant optical element has surface with alternating grade of sagittal non-sphericity, which changes along direction of main scanning of said optical element. In range of effective scanning of surface value of displacement of position of falling light beam in direction of additional scanning is made the same. In second variant of scanning device optical element is made so that on surface for scanning position of images of two light beams, falling in a slanting manner on surface, perpendicular to rotation axis of said deflecting device, at angles γ and γ' (0≠γ<γ'), almost coinciding with each other.
EFFECT: broader functional capabilities, higher efficiency.
8 cl, 30 dwg
FIELD: space engineering; forming satellite systems for positioning objects on earth surface.
SUBSTANCE: proposed method includes injection of N artificial satellites into circular or other orbits which work in "n" planes (where "n" is integer which is more than 2) by mi (i=1, ...n) satellites (where n is integer) in each plane. Satellites are positioned in orbits of datum plane and in planes located symmetrically and in pairs relative to datum plane. These planes of orbits are positioned irregularly along terrestrial equator relative to datum plane at angles a priori not equal to 360°/n. Artificial earth satellites in orbits are positioned irregularly and symmetrically in pairs relative to base satellite.
EFFECT: reduced number of artificial earth satellites in navigational system with no impairment of system parameters at positioning of ground objects.
1 dwg, 1 tbl
FIELD: information satellite systems; forming global radio-navigational field for sea-going ships, ground, air and space vehicles.
SUBSTANCE: proposed system includes many low-orbit spacecraft whose number depends on conditions of global covering of access areas of users. Each spacecraft contains communication unit in addition to navigational equipment for communication of this spacecraft with two other spacecraft in its orbital plane and two spacecraft from adjacent orbital planes. Communication is performed in millimetric wave band absorbed by Earth atmosphere. At least one spacecraft is provided with high-accuracy synch generator. Thus spacecraft group is formed which is provided with noise immunity system of relaying and measuring radio lines connecting all spacecraft groups and navigational radio line covering upper hemisphere.
EFFECT: enhanced reliability and accuracy; enhanced noise immunity of data fed to users of satellite system.
FIELD: electromechanical actuating controls of the attitude of spacecraft, applicable for production of support systems in weightlessness at accomplishment of turns and fixation of spacecraft.
SUBSTANCE: the gyroscope has two or three gyroscopic members in a sealed body with a helium filling, whose spin axes are mutually perpendicular, electric drives of turn of the gyroscopic members and a control unit. The gyroscopic members are made in the form of two flywheels-electric motor armatures located in the same spin axis concentrically one in the other, each of them has a ring-shaped member with a rectangular section, rigidly coupled to the carrying cone-shaped members for fixation in the spin axis, located on the two sides of it. The power windings of the electric drive are positioned on the ring-shaped members, the winding inlets are connected to the slip-rings, and the outlets - to the respective commutator bars, rollers for provision of an electric contact are positioned between the commutators of the flywheels-armatures, each flywheel-armature has brake drums located on different carrying members. The body of each gyroscopic member is lens-shaped.
EFFECT: simplified construction due automatic compensation of parasitic deviations, precession torques.
2 cl, 7 dwg