1017 results about "Gas generator" patented technology

The invention provides a gas generator set fault detection method and device, equipment and a storage medium, and belongs to the technical field of gas power generation, and the method comprises the steps: obtaining target detection data collected by different types of sensors of a gas generator set, and calculating a correlation coefficient between the target detection data and a target parameter; adding the target detection data of which the correlation coefficient is greater than a set threshold value into a fusion candidate set, and calculating a target weight corresponding to each target detection data in the fusion candidate set; based on each piece of target detection data in the fusion candidate set and the target weight corresponding to each piece of target detection data, obtaining comprehensive detection data; performing feature extraction on the comprehensive detection data to obtain time domain features and frequency domain features corresponding to the comprehensive detection data; and determining the fault type of the fault of the gas generator set based on the time domain feature and the frequency domain feature. According to the gas generator set fault detection method and device, the equipment and the storage medium provided by the invention, the accuracy of fault detection can be improved.

The invention provides a control method and device of a mixed gas power generation system, equipment and a storage medium, and belongs to the technical field of new energy power generation. The method comprises the following steps: calculating the introduction rate of each target gas based on load operation data, the type of gas introduced into the gas generator set at present, the type of target gas introduced into the gas generator set after a first duration in a combustion stage and the proportion of the target gas, based on the introduction rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration, the exhaust gas proportion used for heating each target gas is calculated, each target gas is heated based on the exhaust gas proportion, and the temperature value of the gas in the gas generator set is monitored in real time; and regulating and controlling the operation state of the mixed gas power generation system based on the temperature value. The proportion of gas input into the gas generator can be flexibly adjusted, and the energy utilization rate of the system is increased.

The invention discloses an intelligent inspection system of a gas generator set, and particularly relates to the field of intelligent inspection, which comprises a multi-dimensional operation parameter real-time acquisition module, a data processing module, an equipment operation evaluation module, a dynamic adjustment module, a fault analysis module, a fault disposal and effect verification module and an equipment health trend prediction module. The multi-dimensional operation parameter real-time acquisition module is used for acquiring key operation parameters in real time in the operation process of the gas generator set by utilizing a multi-parameter sensor array; the data processing module is used for carrying out preprocessing and feature extraction on the collected key operation parameters; the equipment operation evaluation module is used for carrying out operation risk analysis according to the extracted equipment state characteristics and constructing a risk evaluation model; according to the method, comprehensive sensing of the running state of the gas generator set is achieved by deploying the multi-parameter sensor array, multiple dimension parameters are collected, deep feature extraction and analysis are carried out on each parameter, and the one-sidedness of traditional inspection is avoided.

The utility model discloses a bridge ship collision prevention active protection device which comprises a laser range finder, a control assembly, a main bridge pier, a main bridge bearing platform, a separation type ship collision prevention facility structure, a polyurethane foam rotary drum and a riverbed, the laser range finder and the control assembly are arranged on the upper portion of the main bridge pier, and the main bridge bearing platform is arranged at the bottom of the main bridge pier. A plurality of separated ship collision prevention facility structures are arranged on the periphery of the main bridge bearing platform on the main bridge piers, polyurethane foam rotating cylinders are arranged on the separated ship collision prevention facility structures, and the other ends, away from the polyurethane foam rotating cylinders, of the separated ship collision prevention facility structures are used for being buried in a riverbed to be fixed. When the distance between the ship and the main bridge pier is detected to be smaller than a certain range through the optical distance measuring instrument, the control assembly controls the gas generator to inflate the gas bag to generate buoyancy, the polyurethane foam rotating drum is pulled to the water surface through the buoyancy to make contact with the ship, and the situation that the ship collides with the main bridge pier and consequently the main bridge pier is damaged is prevented.

A system for protecting a rider on his / her horse, including an airbag vest intended to be worn by the rider and including at least one inflatable sheath, a gas generator, a gas cartridge and an electronic unit connected to the gas generator and allowing triggering the inflation of the sheath, the system further includes a motion sensor intended to be installed on the horse, for example on the saddle, and configured to detect a fall of the horse, the motion sensor being connected to the electronic unit so as to trigger the inflation of the sheath in case of detection of a fall of the horse, so as to mitigate a potential crushing of the rider by the horse.

The present application provides an oil-gas separation apparatus capable of implementing complete degassing and methods. The apparatus comprises: a piston cylinder and a degassing cylinder, a degassing solenoid valve being arranged between the degassing cylinder and the piston cylinder, one end of the degassing solenoid valve extending into the interior of the piston cylinder, and the other end thereof being in communication with the degassing cylinder; a variable speed diaphragm pump, an air intake end thereof being in communication with the atmosphere and an air discharge end thereof being in communication with the degassing cylinder for drawing ambient air, and used for cleaning a gas path of the oil-gas separation apparatus, and providing power for the degassing cylinder, thereby replacing a design involving a carrier gas cylinder or a gas generator; and a main control module. According to the present application, the piston cylinder, the degassing cylinder, the degassing solenoid valve, and the variable speed diaphragm pump are integrated and are uniformly controlled by the main control module, so that high-efficiency oil and gas separation is implemented. A unique degassing control method and a concentration calculation method are designed, so that fast and efficient degassing is implemented, nearly complete degassing is achieved without correcting a degassing rate, a mathematical model for inverse calculation of an oil sample concentration on the basis of a gas concentration is simplified, and concentration conversion is convenient.

The invention belongs to the related technical field of pressure tests, and particularly discloses a gas inlet pipeline test device for a gas generator, which comprises a first base and a second base, a round frame is fixedly mounted on one side of the upper end surface of the first base, an annular pipe is embedded in the round frame, and a connecting rod is mounted at one end in the annular pipe through an arranged telescopic mechanism. The outer side of the connecting rod is externally connected with a ring rod through an inner chuck fixedly connected in a sleeving mode, a sealing rotating ring is arranged on the outer wall of one side of the round frame, a test air inlet pipe movably penetrates through the sealing rotating ring in a penetrating mode, and a particle feeding simulation mechanism is arranged at the end, away from the sealing rotating ring, of the test air inlet pipe. By simulating multi-field coupling environments such as pressure fluctuation, particle scouring and mechanical vibration under real working conditions, the problem that data deviation is large due to the fact that complex working conditions cannot be reproduced in a traditional test is solved, and precise detection and full-life-cycle evaluation of the performance such as wear resistance, pressure resistance and blockage resistance of the pipeline are achieved.

This invention provides a method for modeling the starting performance of a marine gas turbine. First, a gas turbine aero-thermodynamic performance calculation model is established using C++, and a heat transfer model, temperature sensor model, and control law model for the gas turbine's high-temperature components are established using the M language. Then, based on test data from the gas turbine startup process, the method analyzes how the pressure ratio and efficiency of typical gas turbine components change with the physical speed of the gas generator during startup. The corresponding low-speed characteristics of the gas turbine's rotating components are generated and corrected, enabling high-precision, real-time simulation of the gas turbine's starting performance. This method considers the heat exchange between the high-temperature fuel gas and the ambient atmosphere and the gas turbine itself, improving the accuracy of the gas turbine startup performance simulation. The method can provide a simulation testing tool for the design and optimization of gas turbine startup control laws.

A swirl recovery vane (SRV) includes a trunnion configured to pivotally connect to an exterior surface of an inner platform of an SRV structure system. The SRV includes a body extending radially from the trunnion to an unshrouded distal vane tip of the vane. The SRV includes a heat exchanger that includes a gas inlet configured to couple a bleed air valve of a compressor section of a gas generator to a gas channel. The heat exchanger includes the gas channel adapted to: enable gas to flow into the gas inlet as cool gas and out through a gas outlet as warm gas; and extend into the body of the vane to enable heat transfer from a heat source within the vane to the cool gas. The heat exchanger includes the gas outlet configured to output the warm gas from the channel to an ambient environment outside of the vane.

The invention relates to the technical field of fault prediction, and discloses an excitation online monitoring system, which comprises an information acquisition module, a data processing module, a mechanical wear quantification module, a shaft vibration health analysis module, a feature fusion module, a mechanical health analysis module and an early warning instruction generation module, collecting multi-source operation data in the gas generator set in real time; performing time-frequency domain conjoint analysis on the excitation current waveform to obtain a current high-frequency ripple component; carrying out harmonic distortion rate fusion on the current high-frequency ripple component to obtain a current ripple characteristic coefficient; dynamically correcting a preset rotor vibration threshold value, and comparing the rotor shaft vibration signal with the dynamically corrected rotor vibration threshold value to obtain a shaft vibration health index; performing cross-domain feature fusion to obtain fused features; carrying out the normalization processing of the fusion features, obtaining a comprehensive health state score, and generating a PHM early warning instruction of a fault block in the excitation primitive; according to the invention, the excitation monitoring accuracy of the gas generator set can be improved.

The invention discloses a heating control method for an engine gas delivery pipeline of a marine gas generator set, which relates to the technical field of marine gas power systems, and comprises the following steps: collecting multi-dimensional environment state information of the gas delivery pipeline in real time, analyzing gas components and pressure fluctuation data, and calculating the temperature of the gas delivery pipeline; a theoretical dew point temperature and a potential paraffin precipitation temperature under real-time pressure are calculated by combining a fuel gas physical property database, a real-time heat exchange model is constructed by combining a pipeline outer wall temperature gradient and a cabin environment temperature, theoretical temperature attenuation curves of different positions of fuel gas in a pipeline are obtained, condensation and paraffin precipitation risk positions and degrees are predicted after comparison, and a real-time heat exchange model is established. And differential electric heat tracing control strategies of different sections of the pipeline are generated in combination with relative humidity data of the cabin. The method can adapt to the real-time physical property of gas and the heat exchange state of the pipeline section, and the heating control execution mode of the gas pipeline is optimized.

The invention discloses a low-temperature upper-stage power system, and relates to the field of spaceflight. Comprising a gas cylinder, a pressure supplementing electromagnetic valve, a pressure supplementing pore plate, a self-generation pressurizing electromagnetic valve, a self-generation pressurizing pore plate, a storage tank, an overflow valve, a storage tank pressure sensor, a pressure stabilizing valve, a circulating pump, a circulating control valve, a pump front valve, a Joule-Thomson throttling expansion valve, a heat exchanger and a branch supply control valve; the main engine subsystem comprises a pump, a turbine, an auxiliary valve, a fuel gas generator, a main valve, a precooling backflow valve, a main thrust chamber, an evaporator, a starting gas cylinder, a starting gas cylinder control valve, a main thrust chamber igniter and a fuel gas generator igniter. The attitude control engine subsystem comprises a plurality of attitude control engines; each attitude control engine comprises an attitude control thrust chamber, and an oxidant control valve, a fuel control valve and an attitude control thrust chamber igniter are arranged on each attitude control thrust chamber. Propellant supply of the main engine and the attitude control engine is achieved through the unified pressurization conveying system.

The invention relates to the technical field of tail gas denitration equipment, and discloses a gas generator set tail gas denitration device which comprises a supporting seat frame, a reaction chamber is arranged at the top of the supporting seat frame, an exhaust pipe and a mixing pipe are connected to the two sides of the reaction chamber respectively, an expansion joint is connected to the side, close to the reaction chamber, of the mixing pipe, and a set of frame bodies are arranged at the bottom of the mixing pipe; the mixing pipe is communicated with the interior of the expansion joint, a first filter plate, a second filter plate, a third filter plate and a fourth filter plate are sequentially arranged in the mixing pipe and the expansion joint from right to left, and a circulating mechanism is arranged between the second filter plate and the third filter plate; the circulating mechanism comprises a first inner cylinder, a second inner cylinder is arranged in the first inner cylinder, a third inner cylinder is arranged in the second inner cylinder, and a power compression part is arranged in the third inner cylinder; a first gear is arranged at the center of the side, corresponding to the third filter plate, of the second filter plate, and a second gear meshed with the first gear is arranged on one side of the first gear. The device has the beneficial effects that denitration can be efficiently and continuously carried out, potential safety hazards can be eliminated, and the denitration stability is ensured.

The utility model discloses a collection device for combustion products of an aero-engine fuel-rich gas generator, which adopts an asbestos fiber material, a zeolite molecular sieve, sandy soil and a filter screen for multiple filtration, and filters and collects solid-liquid components in outlet flue gas; and under the action of the water-cooling coil pipe, the residual outlet flue gas is cooled to a safe temperature, and the low-pressure gas tank is utilized to complete the collection of gas components. The collecting device disclosed by the utility model is stable in material performance, low in price, good in usability and service life, and capable of obtaining remarkable working and economic benefits.

The application provides a mine roadway self-gas automatic explosion-proof device, and belongs to the technical field of explosion-proof devices. The device comprises a device body and a support arranged outside the device body. The device body comprises a shell, a mounting ring, a junction box, a nozzle, a protective film and a gas generator. The device body is fixed to the inner side wall of the support through a hoop and a bolt. A protection assembly is arranged in the shell. The two protection plates in the protection assembly cooperate with each other to isolate the dry powder extinguishing agent from the protective film, so that the dry powder extinguishing agent does not directly contact the protective film. The continuous low-frequency vibration of the device when it is not triggered is prevented from causing the dry powder extinguishing agent to rub back and forth on the surface of the protective film. In this way, the leakage of the dry powder extinguishing agent and the overflow of the subsequent high-pressure gas caused by the rubbing and tearing of the weak part of the film body are avoided, so that the amount and the pressure of the dry powder extinguishing agent sprayed subsequently are sufficient, and the explosion-proof effect is improved.

The invention provides an automatic mechanical arm device, and belongs to the technical field of mechanical arms, the automatic mechanical arm device comprises a multi-axis servo mechanical arm and a laser welding head, the laser welding head is connected with a gas generator, the laser welding head is connected with an air injection seat and a laser channel cylinder, the air injection seat is connected with an air cylinder, and the automatic mechanical arm device further comprises a pollution discharge assembly, the pollution discharge assembly is used for removing smoke dust attachments after welding in the air outlet cylinder; the throttling assembly is used for circularly absorbing part of gas; the device has the beneficial effects that active cleaning of smoke dust attachments on the inner wall of the air outlet cylinder is achieved through the pollution discharge assembly, external washing equipment is not needed, a traditional maintenance means is avoided, the stability of the drift diameter of an air path is maintained, it is ensured that protective gas is output uniformly, the welding accuracy and efficiency are improved, and the throttling assembly restrains diffusion of the protective gas through an umbrella-shaped throttling cover; and meanwhile, unpolluted redundant protective gas is recycled, and the consumption of the protective gas is reduced.

The utility model provides a folding wing unmanned aerial vehicle launching device, which belongs to unmanned aerial vehicle launching devices and comprises a launching cylinder, one end of the launching cylinder is connected with an air chamber, and a piston is slidably mounted in the air chamber; the end, away from the launching cylinder, of the air chamber is connected with a mounting base, and a gas generator is mounted on the upper surface of the mounting base and located in a space defined by the air chamber, the piston and the mounting base. An air chamber is designed, and a piston is installed in the air chamber in a sliding mode. The end, away from the launching cylinder, of the air chamber is connected with a mounting base, a gas generator is mounted on the upper surface of the mounting base and located in a space defined by the air chamber, the piston and the mounting base, and the gas generator is powered on to instantly expand to emit gas so as to push the piston and the unmanned aerial vehicle mounted on the piston to launch. Therefore, launching of the unmanned aerial vehicle is achieved, the size of the launching device is reduced, and the launching efficiency is improved.

A non-full-covering single flight vehicle helmet comprises a helmet body, goggles are arranged on the front portion of the helmet body, a temporal bone-occipital bone annular air cushion is arranged on the inner wall of the lower portion of the helmet body, a top bone-frontal bone cap-shaped air cushion is arranged on the inner wall of the upper portion of the helmet body, an inflatable neck support is arranged at the bottom of the helmet body, a gas generator is arranged on the back of the helmet body, and the inflatable neck support is connected with the gas generator through a pipeline. The inflatable neck support is contained in a net-shaped braid arranged along the edge of the bottom of the helmet, the upper portion of the net-shaped braid is connected to an interlayer between the helmet and the parietal bone-frontal bone cap-shaped air cushion, and the net-shaped braid is made of elastic materials. The temporal bone-occipital bone surrounding air cushion and the parietal bone-frontal bone cap-shaped air cushion are both non-trigger type air cushions, are provided with snap fasteners connected with the helmet, and are both of a multi-layer structure. According to the scheme, the non-triggering air cushion is integrated in the helmet, and the triggering type neck support air bag is arranged, so that a pilot is effectively protected.

This utility model discloses a fixing structure for a gas generator, comprising: a semi-circular fixing shell detachably mounted on an airbag support; a limiting baffle is provided on the left end of the semi-circular fixing shell, and a limiting constriction is formed on its right end, which cooperates with a limiting groove formed on the surface of the gas generator's outer shell; and a limiting snap-fit ​​piece located inside the semi-circular fixing shell, the limiting snap-fit ​​piece having a snap-fit ​​groove for fixing the excitation end of the gas generator; during installation, the gas generator is installed into the semi-circular fixing shell, the left end face of its excitation end abuts against the inner surface of the limiting baffle, the limiting groove of which cooperates with the limiting constriction of the semi-circular fixing shell for limiting, and one end of the airbag deflation strap extends between the limiting baffle and the limiting snap-fit ​​piece and is tied to the excitation end of the gas generator. The fixing structure of this utility model is easy to install, has better reliability, lower cost, and stronger versatility.

The utility model discloses a generator control device, a gas generator system and an aircraft, the generator control device comprises an automatic control unit, a sensing unit and a rectification unit, the generator is connected with a turbine of a turbojet engine through a main shaft, and the generator is connected with electric equipment. The automatic control unit is connected with an oil pump of the turbojet engine, electric equipment, the sensing unit and the rectifying unit, the sensing unit comprises a rotating speed sensor connected with a main shaft, the rectifying unit comprises a diode rectifier bridge and a buck-boost converter, the generator is connected with the diode rectifier bridge, and the diode rectifier bridge is connected with the buck-boost converter. And the buck-boost converter is connected with electric equipment. The power supply can stably output electric energy according to the requirements of electric equipment, ensures that the output voltage is stable, and meets the requirements of the electric equipment.

The invention relates to a hydrazine arc thruster support in split design, and relates to the field of spacecraft supports, the hydrazine arc thruster support comprises a generator support and a thruster support, the generator support is fixedly connected with a fuel gas generator, the thruster support is fixedly connected with an arc thruster, and the generator support is made of an aluminum alloy material and is in heat conduction connection with a satellite mounting surface; the thruster bracket is made of a titanium alloy material and is in heat insulation connection with a satellite mounting surface; and one side of the generator bracket is fixedly connected with one end of the thruster bracket through a blocky bracket connecting piece. The electromagnetic valve has the advantage that the use temperature and the mounting surface temperature of the electromagnetic valve are effectively reduced.

The utility model discloses a launch canister of an unmanned aerial vehicle. The launch canister comprises a base, a gas generator and a sabot device, the cylinder body is arranged on the base; the gas generator is arranged on the base and located in the barrel, and a gas generating agent and an igniter are arranged in the gas generator; the shell supporting device is movably arranged in the barrel body and comprises a first plate body and a second plate body, the first plate body is located above the gas generator, the shape of the first plate body is matched with the structure of the inner wall of the barrel body, and the second plate body is located above the second plate body. The second plate body is fixed to the first plate body and located above the first plate body, and the second plate body is used for abutting against the lower end of the unmanned aerial vehicle. According to the technical scheme, the safety of the unmanned aerial vehicle launch canister can be improved.

The invention relates to the technical field of ultrasonic welding, in particular to ultrasonic welding equipment for sealing an interface of a gas generator, which comprises a platform, a control box, a push cylinder I and an ultrasonic transducer, the ultrasonic welding device further comprises a welding module, a pushing feeding mechanism and a heat dissipation mechanism, the welding module is installed at the lower end of the ultrasonic transducer, a feeding opening is formed in the platform, the pushing feeding mechanism is installed below the platform and located below the feeding opening, and the welding module is located above the feeding opening and the pushing feeding mechanism. The pushing feeding mechanism is used for loading the gas generator and pushing and feeding the gas generator to the position above the platform through the feeding opening, and the heat dissipation mechanism is arranged on the welding module and the pushing feeding mechanism and used for dissipating heat of the upper portion and the lower portion of the gas generator; the upper portion and the lower portion of the gas generator are efficiently cooled through the cooling mechanism, the temperature of the gas generator is prevented from being too high, and safety and practicability are improved.

The utility model relates to the technical field of gas generators, in particular to a gas generator set starting gas supply device, which is characterized in that a diaphragm is adsorbed with a switch plectrum through a connecting structure in the process of pressing the switch plectrum under the change of air pressure so as to ensure that the gas supply amount is sufficient at a time; the air pressure in the cavity between the cover plate and the diaphragm is reduced at a constant speed through the buffer device, the springback speed of the diaphragm is controlled, the single-time air supply amount is adjusted according to requirements, air is added into the cavity between the diaphragm and the cover plate through the driving device to increase the air pressure, the diaphragm extrudes the switch shifting piece, and the switch shifting piece can be automatically and slowly recovered to the original position. It is guaranteed that the single-time pressurization amount is within the needed range, and the practicability of the device is improved; comprising a gas pressure reducing valve shell, a gas outlet, a gas inlet, a one-way valve, a switch shifting piece, a diaphragm and a cover plate. The diaphragm switch further comprises a connecting structure, a buffer device and a driving device, the connecting structure is installed on the diaphragm and the switch shifting piece, the buffer device is installed on the cover plate, and the driving device is connected with the cover plate.

The invention relates to the technical field of civil fuels, in particular to a civil ether-based fuel which is formed by mixing C5 and dimethyl ether. The content of the C5 is 10-30% by weight, the content of the dimethyl ether is 70-90% by weight, the C5 adopted by the civil ether-based fuel is a low-pressure flammable liquid and can still be stored in a common low-pressure steel drum after being mixed with the dimethyl ether, a high-pressure container is not needed, and the leakage and explosion risks are reduced; and during combustion, 'air-light hydrocarbon mixed gas' generated by a special gas generator is saturated gas, is easy to mix with air and is not easy to gather together, so that the occurrence of emergency accidents such as explosion or poisoning and the like is reduced.

The present application provides a technology for improving the pressure resistance of an igniter assembly. The igniter assembly includes an igniter body having an ignition portion filled with a primer and a conductive portion extending from the ignition portion; an igniter collar having a cylindrical wall portion surrounding at least the conductive portion of the igniter body; and a resin molded body sandwiched between the igniter body and the igniter collar to integrate the igniter body and the igniter collar. The igniter collar has a first support portion provided at an inner circumferential portion of the wall portion and formed in a convex shape toward the radial inner side of the wall portion in a manner of being buried in the resin molded body, and a second support portion provided at a position in the inner circumferential portion further away from the ignition portion than the first support portion in the direction of the central axis of the wall portion and formed in a convex shape toward the radial inner side of the wall portion in a manner of being buried in the resin molded body, or formed in a concave shape toward the radial outer side of the wall portion in a manner of filling the resin molded body inside the second support portion.

A vehicle, comprising an airbag. The airbag (100) comprises a gas generator (1) for the airbag (100); the gas generator (1) for the airbag (100) comprises a housing (10) and an ignition assembly (20); the ignition assembly (20) comprises a base (21) and a cartridge (22); the base (21) is located in the housing (10); a first snap-fit slot (23) is defined between the base (21) and the inner wall of the housing (10); the cartridge (22) is provided with a flange (24); and the flange (24) is snap-fitted to the first snap-fit slot (23), so as to limit the axial movement of the cartridge (22) along the housing (10).

The invention belongs to the technical field of fuel gas generators, and discloses a combustion chamber of a fuel gas generator. The gas generator combustion chamber comprises a combustion chamber front section and a combustion chamber rear section which are sequentially connected from front to back through a flange plate. A hydrogen spray hole and a spark plug are arranged at the front section of the combustion chamber, the spark plug ignites hydrogen, an oxidizing agent and fuel in main flow are ignited through hydrogen flames, and the hydrogen flow is controlled to be suitable for different ignition working conditions; two paths of body air are arranged at the rear section of the combustion chamber, and flame stability in the combustion chamber is achieved through flow matching of the two paths of body air; meanwhile, the ignition function of the igniter and the flame stabilizing function of the flame stabilizer are integrated on the combustion chamber of the fuel gas generator, the complexity of the fuel gas generator is reduced, the space size is reduced, and the fuel gas generator can be suitable for application scenes with the limited installation space size. The flow calculation method is simple and reliable and has engineering practical value.

The application provides an air bag device and a manufacturing method thereof, and relates to the technical field of air bags. The air bag device comprises a main cloth, a first reinforcing piece and a gas generator. The first reinforcing piece is laminated on the inner panel of the main cloth corresponding to the installation range of the gas generator. A first through hole for installing the gas generator is arranged on the main cloth in the installation range of the gas generator. A second through hole for the gas generator is arranged on the first reinforcing piece. The projection of the second through hole on the main cloth does not overlap with the position of the first through hole. At least a part of the second through hole is a slanting cut. Since the through holes are arranged in a staggered manner in the laminated cloth, after the air bag is folded, the cloth is staggered to cover the through holes, the air tightness of the air bag is improved, and the performance of the air bag system is optimized.

Turbomachine (10) for an aircraft, said turbomachine (10) comprising a gas generator having at least one compressor (1a, 1b), a combustion chamber (1c) and at least one turbine (1d, 1e), said at least one turbine (1d, 1e) having a shaft (3) connected by a mechanical reduction gear (6) to a propulsion propeller (S), the shaft (3) being coupled to the solar element (11) by a reverse-rotating gearbox (20) with the same rotational speed such that a rotation of the shaft (3) about its axis (X) at a given speed causes a rotation in the opposite direction of the solar element (11) about the same axis (X) at the same speed. Figure for the abbreviation: Figure 3