RU2166801C1 - Inflated reflector - Google Patents

Abstract

FIELD: technical physics, in particular, reflectors, for instance, for space information aids. SUBSTANCE: the claimed reflector is made in the form of a multisectional container accommodating folded inflated shells at a differential pressure. The shells are fixed for separation by dropped housings. The inner surface of each shell is linked with the opening lock of the subsequent shell in such a manner that after destruction of the previous shell and opening of the lock the subsequent shell gets open. EFFECT: enhanced survivability of reflector at external effects that is attained due to creation of a construction providing for multiple formation of reflectors. 4 dwg

Description

 This proposal relates to the field of technical physics, in particular, to devices for inflatable reflectors.

 Known options for devices and methods for creating (forming) various reflectors (US patents [1, 2], French patent [3], as well as Velikanov VD and other radio systems in rocket technology, Moscow, Moscow, 1974 [4], "Foreign space objects", GONTI-1, 1974 [5]). Transformable reflectors, including inflatable ones, take their place, the use of which gives a number of advantages during transportation and delivery to the place of use. From these positions, inflatable reflectors formed by excess gas pressure are most acceptable - due to preliminary pressurization, the use of a gas generator inside the shell, etc. Their use primarily determines compactness, lower weight compared to rigid devices, the ability to transport people, the ability to transport as part of an object (airplane, helicopter, space object), and finally, the ability to reset or otherwise engage at the right time in the right place. The main disadvantage of inflatable reflectors is their low resistance to external influences, which reduces the duration of their functioning.

 The working life of inflatable reflectors used in practice to create various labels, designate areas and places in the interests of the Ministry of Emergency Situations (EMERCOM), designate for a long time under external influences on the reflector milestone in a disaster is a problem, the solution of which is considered in the present invention.

 It should be noted that virtually all solutions for inflatable reflectors, without exception, are disposable devices used to study atmospheric parameters, as communication satellites, air and space targets, and also for other purposes.

 In the known analogue of US patent N 3115631, class. 343-18 [1] an inflatable reflector of radio waves encloses a cylindrical base of double-knitted textile fabric, the sheets of which are reliably connected in a parallel position, forming an element that, when supercharged by gas, turns into a flat base to which inflatable ribs are attached, made structurally like base. Sheets of flexible radio-reflective material are attached to the base and to the ribs of the reflector. By inflating the base and ribs, a rigid reflector is formed with ribs and base flat in a mutually perpendicular position.

 In a Kannilae balloon, consisting of the outer and inner shells [6], the inner shell of the closed type (high pressure), filled with lifting gas, is placed in the outer shell of the open type, filled with outside air and equipped with a gas valve and pump. When the mass of the aerostat system increases during icing, a command is given to bleed air from the outer shell, which continues until the balloon rises above the icing zone. To reduce the balloon to a given level of flight, a command is issued to pump outboard air using a pump. A balloon can also be used as a vertically sounding system [6].

 As a prototype, an experimental inflatable cohesive reflector satellite was selected for passive relay of radio signals [7]. The shape of the body is a ball with a diameter of 30-40 m made of elastic radio and reflective material under excessive internal pressure (shell thickness 0.013-0.018 mm). The advantage of the prototype is a small initial volume.

 The main disadvantage of the prototype is its low resistance to the complex effects of cosmic factors, damage by meteorites, leading to loss of shape, and consequently to a decrease in the period of functioning. Thus, the main disadvantage of the prototype is its disposability. The device of the reflector (satellite) is made in such a way that the inflatable shell after the destructive action loses the properties of the signaling (reflecting) element.

 The aim of the invention is to increase the resistance to external influences of an inflatable reflector by introducing housed in each other shells made of radio and reflective material with sequential opening and formation.

 The goal is achieved in that the reflector is made in the form of a multi-sectional structure in which a folded shell is placed in each section, pressurized in the folded state by overpressure, that is, compared to the prototype, N shells are additionally placed inside the shell depending on the planned time of the “work” of the reflector and expected external influences during this time.

 The proposed device of an inflatable reflector in comparison with the prototype and analogues provides an increase in operating time, allows for the repeated formation of the reflector - after the destruction of the shell immediately form the following.

 Using the proposed reflector provides improved reliability of the reflector during repeated exposure to destructive loads.

 The device is shown in FIG. 1, a general view of the reflector, and in FIG. 2, 3, 4 functional relationships of the reflector elements (Fig. 2) and the activation circuit.

The device contains:
the casing 1, N + 1 of the two-layer shells 2 with the formation of a cavity between them, fastened to the base 3, into which a pipe 4 with a valve 5 and nipple devices 6 is pressed into the cavity of each shell for preliminary pressurization of the shells 2.

 The first shell 2 in the laid state is fixed by the casing 1 of the decaying segments 7 of the casing of the segments 8, and subsequent N shells are fixed. The segments 7 and 8 are fixed at one end with brackets 9 and 10 with the possibility of disengaging after the operation of the locks 11 and the decay of the segments. The other ends of the segments 8 are secured by locks 11, containing latches 12, springs 13, washers 14 and pins 15. A flexible connection of a limited length 16 locks 11 are mechanically connected to the inner surface of the shell 2.

 The casing 7 of the segments 7 in the proposed embodiment of the device is placed in the starting device 77, in which the ejector rod 18 is mounted, driven in some way in translational motion.

 The device operates as follows. After the rod 18 ejects the container 1 from the starting device 17 (or stripping), the segments 7 disintegrate when the first of the N + 1 shells 2 is formed on the base 3, inside which the following inflatable shells are placed, the lock of the second section by tensioning a flexible connection 16 of a limited length is cocked by turning the latch 12 on the pin 15 in a vertical position. When the shell 2 ruptures, the latch 12 disengages when the traction tension is weakened and the lock opens under the action of the spring 13. The ends of the segments 8 in this case are released and under the action of the formed shell 2 breaks up and when the angle changes from the vertical, the lower ends disengage from the brackets 9.

 The next shell is formed, etc. (other options for the initial activation of the reflector are possible, for example, manually).

 A positive result stated in the proposed technical solution is achieved in such a way that the design of the device provides and allows the use of a new reflector shell in the event of a shell destruction.

 During the planned time of using the reflector, all N + 1 shells (one main and N additional) can be involved or only a part of them depending on the external factors, which is especially important when using an inflatable reflector.

 Thus, the proposed technical solution allows you to create an inflatable reflector of high resistance under various mechanical and climatic influences on it. The increased resistance of the reflector is ensured by the introduction of shells embedded in each other, which are subsequently opened and formed when the outer shell is destroyed.

Literature
1. US patent N 3115631, NKI 343-18, 1963.

 2. US patent N 1392628, NKI 250-338.

 3. French patent N 2547474, MKI F 41 H 9/00, 1969.

 4. Velikanov V.D. et al. Radio engineering systems in rocket technology. - M .: Military Publishing, 1974.

 5. Foreign space objects, GONTI-1, 1974.

 6. E. P. Borisenkov et al. Sounding of the atmosphere with meteorological balloons, Lengodiromet, 1982, p.20.

 7. Ball-Amer. Met. Soe, 1969, v. 50, No. 11, p. 867-874.

Claims (1)

 An inflatable reflector comprising a shell of elastic radio and reflective material under excessive internal pressure, characterized in that the shell is fixed to the base, several shells are inserted inside the shell, and all shells are separated by segmented casings made with the possibility of disintegration of segments, some ends of which in each casing are fixed on the base with the possibility of disengaging from it, while others are fastened by a lock with a lock, mechanically connected m with the inner surface of the flexible coupling previous shell limited length, wherein the reflector is provided with a common casing disintegrating.

Images