RU2316716C1 - Battery of fireworks rockets - Google Patents

Abstract

FIELD: pyrotechnic device for illumination, entertainment and signaling purposes.

SUBSTANCE: the battery of fireworks rockets has a mounting and a rotary launcher carrying the rockets installed around the rocket edges, the rod-like fins of the rockets are placed in guide tubes fastened inside the launcher. The fireworks rockets are interconnected by sections of the blasting fuse installed the through holes of the nozzle bushings in such a way that one end of each section is fastened in the jet charge, and the other end of the section is located under the nozzle of the preceding rocket. The basing cutouts for the support of the rockets on the end face are made in the launcher, the shape of the cut-outs is adequate to the lateral section of the combined part of the rocket together with the rod-like fin, and the outlet of the nozzle bushings of the rockets is closed by a combustible membrane.

EFFECT: enhanced functional reliability of rocket launching by one at a preset rate, without any malfunctions and failures.

5 dwg

Description

The invention relates to pyrotechnic devices for illumination, entertainment, entertainment and signaling purposes, and more particularly to air spectacular missiles.

The level of this technical field is characterized by a battery of fireworks, described in the book Trapenok V.A. and Antonova L.A. “From a small clapperboard to a large firework,” St. Petersburg, Crystal, 1997, p.107-109, which includes a starting guide and an arc-shaped starting guide made of wood.

Through the start guide, through holes are equally distributed for placement of rod-shaped rocket stabilizers in them, which are based in coaxial base sockets.

The feet of each rocket are connected to a common fire-conduit cord laid along the launch guide, which serves to communicate the missiles through the fire chain for sequential automatic launch.

The disadvantages of this technical solution are the unsatisfactory functional reliability of the battery of fireworks, the technological complexity of launch preparation, the bulkiness of the structure and its large mass, which makes it difficult for the consumer to use it individually.

In the transport position, the missiles are stacked separately from the launcher, therefore, before starting the battery, it is necessary to mount the missiles on the launch guide, connect the feet of each missile to a common fire-retardant communication cord, which is time-consuming and can only be done by a professional working with pyrotechnics, since it is necessary to carefully free up space the contacts of the cords from the protective braid, which, after their connection, again insulate from direct exposure to fire. Otherwise, the feet of the rockets will not ignite sequentially through the transmission of a fire pulse through the communication cord, but arbitrarily from the direct action of hot gaseous products of combustion of the charges of the rocket engine of the launch rockets in the battery.

The noted drawbacks are eliminated in the battery of fireworks according to the invention RU 2200930, F42В 4/06, 2003, in which the rockets associated with a common fire-retardant cord are mounted in a rotary guide launcher, the base for storage and transportation laid in a box-shaped form ready for startup condition.

The launcher is made of sheet structural materials, it quickly and easily transforms the missile battery from the transport position to the starting one by simply turning the guide until it is fixed in the stops of the base, which is pivotally connected to the guide via a bracket.

For reliable sequential transmission of the fire pulse to ignite the charges of the jet engines in the battery, the rockets are connected by pieces of a fire-resistant cord passed through through holes in the nozzle bushings. In this case, one end of each segment of the cord is passed through the nozzle and fixed in the jet charge of the rocket engine, and the second end of the segment of the cord is located under the nozzle.

This ensures reliable sequential ignition of rocket reactive charges with a predetermined time interval, since ignition of the reactive charge is first initiated, the hot products of which flowing out through the nozzle then ignite a pair of cord sections that transmit a heat pulse to the charge of the subsequent rocket.

The missiles are located around the perimeter of the hollow launcher, despite the fact that their missile aerodynamic stabilization rods are mounted in guide tubes fixed inside the launcher.

This makes it possible to use rockets of different diameters with different pyrotechnic equipment in the same battery, which provides a variety of fireworks effect in color and shape of the spark-path trajectory, bright saturated glow with sound.

The battery is easy to operate and does not require special knowledge and skills of the consumer.

However, the known battery of fireworks has the following disadvantages arising from design features.

The unsatisfactory functional reliability of the battery due to the possible unauthorized ignition of reactive charges, bypassing the thermal impulse of the fire wire, from the direct action of the hot gaseous products of combustion of the launching of the neighboring rocket, coming through the open nozzle sleeve from the volume of the launcher’s decorative cover.

When transporting and storing the assembled battery, cases of autonomous turns of the missiles (including during official handling) in the launcher relative to the guide tube are not excluded, in which the unity of communication of the missiles in the battery due to pulling out the cord segment (s) from the nozzle bushings. As a result, the technological chain of launching rockets is interrupted or partially launched, with all the negative consequences of a flawed spectacular effect from the created incomplete fireworks.

The problem to which the present invention is directed is to increase the functional reliability of a battery of fireworks.

The required technical result is achieved by the fact that in a known battery of fireworks rockets, including a base and a rotary launcher, carrying missiles mounted around the perimeter, rod stabilizers which are placed in guide tubes fixed inside the launcher, while fireworks are interconnected by nozzles fixed in through holes bushings with segments of a fire-resistant cord in such a way that one end of each segment is fixed in a reactive charge, and the other end of the segment of the cord and situated under the previous rocket nozzle according to the invention in a launcher made basing cutouts missile support on the end profile which is adequate to the cross-section of the rocket combined cumulatively with a rod regulator, and the output of nozzle sleeves closed missiles from burning the membrane.

Distinctive features ensured reliable sequential automatic actuation of the missiles when the battery was started in a predetermined technological sequence, which guaranteed to create the required visual effect from a salvo of cascading fireworks.

Placing the part of the missiles adjacent to the launcher, where the stabilizing rod is fixed, in its adequate profile cutouts creates a geometric closure of the missiles in the transverse direction relative to the launcher, which eliminates the rotation of the rods in the guide tubes. Thus, the spatial position of each rocket in the launcher is rigidly stopped, which excludes mechanical effects on the fire-retardant communication cord, which could change the relative position of the ends of its paired segments.

The result of the described is the preservation of the integrity of the battery fire chain for sequential automatic ignition of rocket reactive charges, by preventing pulling out sections of the fire wire from the nozzle sleeve and reactive charge, respectively.

Overlapping the exit of the nozzle bushings of the missiles with a membrane allows isolating the open end of the section of the fire-resistant cord located in its volume for a time, until the technologically predetermined initiation of the rocket reactive charge by the heat pulse from the pair of the cord occurs. This prevents the uncontrolled ignition of a segment of the cord located under the nozzle by the hot gaseous products of combustion of the charge of the previous rocket and, therefore, the premature launch of a subsequent rocket in the battery.

For a reactive jet of combustion products of a reactive charge, the membrane is not an obstacle, burning instantly.

In addition, the membrane that insulates the volume of the nozzle sleeve prevents the interaction of atmospheric moisture with the flame-retardant cord, which ensures the stability of its ignition and combustion for the entire storage period of the battery before operation.

Therefore, each essential feature is necessary, and their combination in a stable relationship is sufficient to achieve a novelty of quality that is not inherent in the signs of disunity, that is, the technical problem is solved not by the sum of the effects, but by a new super-effect on the sum of the essential features of the invention.

A comparative analysis of the proposed technical solution with identified analogues of the prior art, from which the invention does not follow explicitly for a specialist in pyrotechnics, showed that it is not known, and taking into account the possibility of industrial serial production of firework rocket batteries, it can be concluded that the patentability criteria are met.

The invention is illustrated by drawings, which have purely illustrative purposes and do not limit the scope of the claims of the totality of the features of the formula. The drawings show:

figure 1 - battery fireworks rockets at the start;

figure 2 is a view of figure 1;

figure 3 is a section along BB in figure 2;

figure 4 - layout of missiles on the launcher;

figure 5 is a section along bb in figure 4.

Firework rockets 1, locked into the battery (Figs. 1, 2, 4), are installed on a rotary launcher 2 mounted on a box-shaped base 3, which serves as packaging for storage and transportation of the product, as well as a support for launching rockets 1.

The ordering rockets 1 are distributed along the perimeter of the launcher 2 (Fig. 5) and are installed with their ends in the profiled notches 4, while the extended rods 6 of the aerodynamic stabilization of the rockets 1 are fixed on the side of the jet engine 5 and are placed inside the guide tubes 7, which are parallelly fixed in the hollow launcher 2 coaxial to profile cutouts 4.

The missiles 1 are based on the launcher 2, resting on their ends in cutouts 4, the profile of which is made adequate to the cross section of the adjacent part of the missiles 1 in conjunction with the rod 6. At the same time, the missiles 1 are spatially fixed in the transverse direction, while maintaining mobility in the longitudinal direction.

The limitation in the possibilities of angular movements of the rockets 1 relative to the guide tubes 7 ensures that the distance between the through holes 8 of the nozzle sleeves 9, through which the segments of the flame-retardant cord 10 are passed (FIGS. 2, 3), remains constant.

In each nozzle sleeve 9, a pair of segments of the cord 10 is installed in such a way that the end of one segment of the cord 10, which is fed to the subsequent rocket 1, is located under the nozzle 11, and the end of the other paired segment of the cord 10, which comes from the previous rocket 1, is passed through the nozzle 11 and fixed in the reactive powder charge 12 of the engine 5. The mutual arrangement of the paired segments of the flame-resistant cord 10 remains unchanged throughout the entire storage and operation, forming a communication fire circuit between the charges 12 of the rockets 1 in the battery.

At least in one of the rockets 1 of the battery, the end of the length of cord 10 secured to the charge 12 of the jet engine 5 remains free and serves to initiate battery operation.

The output of the nozzle bushings 9 is blocked by a burning membrane 13, isolating the open end of the fire-resistant cord 10, which is sensitive to a thermal pulse.

The battery operates as follows.

From the source of open flame ignite the free end of the flame-resistant cord 10, through which a thermal pulse is supplied to the powder charge 12 of the jet engine 5 and initiates its combustion.

Generated gaseous hot combustion products of charge 12 are formed by the nozzle 11 in the form of a central jet, they are ejected by a high-speed stream through the sleeve 9, where the pair segment of the cord 10 is ignited and the membrane 13 is burned into the atmosphere.

In this case, the heat distributed in the air is not enough to burn the membranes 13 on the nozzle sleeves 9 of the neighboring rockets 1, therefore, the unauthorized initiation of their engines 5 is prevented.

The heat pulse from the pair of segments of the cord 10 is supplied in a similar manner to the burning time, proportional to the selected length of the connecting rocket 1 of the cord 10, to the powder charge 12 of the jet engine 5 of the rocket 1, to which the first rocket 1 is connected.

When burning a powder charge 12, a jet propulsion develops, as a result of which rocket 1 receives acceleration of movement.

At the start of the rocket 1 due to the kinematic connection of the rod 6 with the guide tube 7 provides a vertical direction of its rise.

On the flight path, the longitudinal stability of the rocket 1 is provided by an aerodynamic stabilizer (rod 6), which shifts the center of pressure beyond the center of mass of the rocket 1.

On the flight trajectory, the pyrotechnic filling of rocket 1 (not shown conventionally) is ignited by the heat pulse of the burning charge 5, during the burning of which a bright force of colored fire and luminous sparks with sound accompaniment are formed, which in total creates a firework effect.

Next, the functioning of the structural elements of the battery is repeated, providing a given sequence of salvo or cascade launch of fireworks 1.

Tests of prototypes of the proposed battery showed reliability in a given mode of action.

Claims (1)

A battery of fireworks rockets, including a base and a rotary launcher, carrying missiles mounted around the perimeter, rod stabilizers which are placed in guide tubes fixed inside the launcher, while fireworks are interconnected by pieces of a fire-resistant cord installed in the through holes of the nozzle bushings in such a way that one the end of each segment is fixed in a reactive charge, and the other end of the segment of the cord is located under the nozzle of the previous rocket, characterized in that the launcher is made with basing cutouts for supporting the missiles on the end face, the profile of which is adequate to the cross section of the part of the rocket adjacent to the support and its rod stabilizer, and the exit of the nozzle bushings of the missiles is closed by a burning membrane.

Images