47results about "Missile propulsion" patented technology

A ram accelerator for accelerating a projectile is provided. The ram accelerator includes a baffle section configured to start the projectile in the ram accelerator without an obturator. The ram accelerator generally includes a tube having a projectile bore; and a baffle section operably coupled to a proximal end of the tube. The baffle section has an annular baffle wall defining a central bore axially aligned with the projectile bore; and a propellant chamber arranged adjacent to the annular baffle wall, wherein the propellant chamber is configured to enclose a propellant. The propellant can be ignited as the projectile passes through the baffle section by pressure created by the projectile, by an ignition source, or by a flame carried by the projectile to start the ram acceleration of the projectile.

An ejection assembly for ejecting an ejection body comprises an ejection channel and an anti-recoil channel; a barrier structure having a first interface boundary and a second interface boundary, including a barrier portion between the first interface boundary and the second interface boundaries; an attachment mechanism for fastening the barrier structure between the ejection channel and the anti-recoil channel; an ejection activation mechanism housed within the barrier structure adjacent the first interface boundary, to initiate ignition of ejection propulsion material contained in an ejection capsule placed adjacent the first interface boundary; and an anti-recoil activation mechanism housed within the barrier structure adjacent the second interface boundary, to initiate the ignition of anti-recoil propulsion material contained in an ejection capsule placed adjacent the second interface boundary.

A recoilless firearm apparatus for firing at least one bullet of a respective standard cartridge, including a front barrel, a disposable firing activator and a rear discharge opening formed behind the front barrel and aligned with the longitudinal axis of the front barrel. The standard cartridge further includes a casing having an external diameter that is smaller than the rear cartridge-chamber diameter, wherein the casing encloses a sealed inner-casing space that contains gunpowder, and wherein the casing includes a primer. Upon activating the primer, the primer explodes to thereby detonate the gunpowder, forming propellant gasses inside the cartridge that are directed both forward and backward as follows: a) forward: firing of the bullet via the front barrel; and b) backward: pushing, by a recoil force Fp, the casing, being a counterweight to the bullet, to thereby eject the casing from the firearm apparatus via the rear discharge opening.

The present invention belongs to the field of power launch experiments, and specifically relates to a gas ejection experimental device. It comprises a pressure chamber, a rear flange, a gas-sealing sleeve, a launch tube, a front head, a sensor fixing base, a barrel ferrule, and a dummy projectile, which are arranged in sequence. The pressure chamber is connected to the rear flange via a flange, the gas-sealing sleeve is placed in the launch barrel in the manner of a piston, and the rear flange and the launch tube, as well as the launch tube and the front head, are connected via threads. The present invention can experimentally measure the ejection internal ballistics by installing different charge gas generators in the pressure chamber. By varying the length of the engine growth tube, the internal ballistic characteristics under different low-pressure chamber initial volumes can be obtained. The front head of the present invention is equipped with a sealing tray recovery device, which can effectively improve the pressure release process after ejection, prevent the rapid escape of high-temperature gas, and enhance the concealment of the launch site.

The invention relates to development of an advanced 360-degree projectile launch helmet system, which can launch projectiles (which may be selected from bullets, pellets, tasers, lasers, etc.) from within the helmet without any collateral damage either to helmet or to the person wearing the same. The system can be voice or remote activated and cross counters any recoils that are generated because of the launch of the projectiles.

The present invention relates to a cartridge and a launcher for a premix with flammable gas or inert gas with or without propellant powder, which makes it possible to propel a moving body at speeds of interest, and is reusable. More particularly, the cartridge and its launcher are provided with a combustion chamber having optimised geometry for improving combustion. This combustion chamber has two chambers, an upstream chamber (11) and a downstream chamber (12) forming a longitudinal duct with variable cross-section, and wherein the duct has a convergent nozzle shape at an outlet of the upstream chamber (11) opening into the downstream chamber (12), and a flared shape at an inlet of the downstream chamber (12) and with respect to the outlet of the upstream chamber, the flared shape being able to generate a turbulent flow of a fluid propelled through the upstream chamber (11) and entering the downstream chamber (12). Advantageously, this geometry makes it possible to increase the combustion velocity during the ballistic phase.

The present invention relates to a modular launcher (1) for a projectile (100) launched with a propellant charge (10), the projectile (100) being arranged so that a detonator (20) is disposed in a projectile body (50) disposed in the launcher (1) and assembled with at least one propellant charge (10) in the launcher (1). Furthermore, the present invention relates to a method for assembling a projectile in a launcher by using modules.

The invention relates to the weapons industry, in particular to firearms. The firearm comprises a barrel (1) with a muzzle cut (2) and is provided with an external jet engine (9) configured to generate a jet of gases (10) coaxial with the barrel axis beyond the muzzle cut (2) in the direction of firing. The invention also concerns a projectile (6) for a firearm, comprising a cavity (18) containing a flowable substance (19) and one or more channels (20) communicating with the cavity (18) and having outlet openings (22) on an outer surface of the projectile (6). The cavity (18) is provided with a piston (23) capable of rectilinear movement and adapted to receive the impact of gases of the propellant charge (5). According to the invention, the projectile (6) has two alternative configurations. In the first configuration, a surface of the cavity (18) has one or a plurality of spiral -shaped protrusions (24) made along the axis of rotation of the projectile (6) and adapted to interact with the piston (23). In the second configuration, the piston (23) is made as a stepped piston consisting of several cylindrical surfaces of different diameters corresponding to the cylindrical surfaces of the cavity (18).

A cartridge (20) has a cartridge case (22) extending along an axis (500) from a base (104) to a mouth (102) and having an interior. A projectile (24) is mounted in the case. A propellant (26) is contained within the case. The propellant has an annular grain encircling the axis.

An artillery configured to propel a projectile, the artillery comprising a firing mechanism, a barrel, and a helical electromagnetic recoil mechanism. The firing mechanism fires the projectile in a first direction toward a target. The barrel has an open-ended bore that guides the projectile in the first direction. The helical electromagnetic counter recoil mechanism includes an electrical energy source, a stator, and a helical electromagnetic armature. The electrical energy source provides electrical energy when the firing mechanism fires the projectile. The stator and armature generate an electromagnetic force via the electrical energy. The helical electromagnetic armature moves in a second direction opposite the first direction via the electromagnetic force when the firing mechanism fires the projectile in the first direction to minimize recoil of the artillery.

A disruptor barrel assembly 1 comprises a barrel 2 and a compensator 3 for eliminating recoil. The compensator 3 is arranged concentrically around the barrel 2, with the compensator 3 taking the form

A ram accelerator for accelerating a projectile is provided. The ram accelerator includes a first tube body having a first projectile bore, a second tube body having a second projectile bore axially aligned with the first projectile bore, and a baffle positioned between and operably coupling the first and second tube bodies. The baffle can have an annular baffle wall defining a central bore that is axially aligned with the first and second projectile bores, and a chamber arranged adjacent to the annular baffle wall. The chamber can extend radially outward from the central bore and the annular baffle wall can be configured to sweep a combustion wave relative to the projectile to prevent the combustion wave from traveling ahead of the projectile, leading to an unstart mechanism of the projectile in the ram accelerator.

A toy projectile launcher having a housing, a projectile container, a cocking slide, an air piston assembly, a barrel interface section, and a detachable launch barrel is disclosed. The projectile container is adapted to hold projectiles, such as foam darts. The cocking slide can be moved for-ward and backward. When the cocking slide is moved backward the air piston barrel moves backward, and a projectile is moved in front of the air piston assembly. When the cocking slide is moved forward, the projectile is pushed into the barrel interface section by an air nozzle disposed on the front of the air piston assembly. A first airtight seal is formed between the air piston assembly and the rear of the foam dart, and a second airtight seal is formed between the barrel interface section and the detachable launch barrel.

The device (10) aligned with the axis of the barrel of a firearm (80) is designed to equalize, as well as possible, the momentum generated by the projectile and the burnt gases, by projecting (17) a mass of fluid at a given speed in the opposite direction. It consists of a support (11) to be attached to the weapon; a secondary valve mechanism (12) for sealing and filling the tank (13) with a pressurized fluid provided by an external system; a duct (14) for the gases to flow along; and a primary valve mechanism (15) for sealing and expelling the fluid in a discharge zone (16). The device according to the invention is particularly intended for military applications in order to improve the grouping of shots and to reduce the costs and limitations of using the barrels.

An automatic recoil-free firearm includes a barrel (100, 600) and a compensating mass firing tube (102, 616) in which a bullet is accelerated in one direction within the barrel (100, 600), counteracted by a compensating mass accelerated in the opposite direction within the compensating mass firing tube (102, 616), thereby minimizing recoil and further providing automatic ammunition handling. The firearm also includes one or more bolts (604, 620) and a barrel configured to reduce or eliminate transfer of momentum and mechanical energy to the barrel and / or the gun body (610) during operation of the firearm.

A firearm propulsion system for releasing a projectile from a firearm includes a firearm having a chamber, a barrel, and a firing pin with a primer. A supply port is passed through at least one of the barrel and the chamber so as to reach the interior. A control valve is in communication with the supply port and is configured to regulate the passage of pressurized gas into the at least one of the barrel and the chamber from the supply port. A sensor is included in the chamber and is configured to detect the location of the projectile passing through the chamber after firing the firearm. A control system communicates with the control valve and the sensor to selectively release pressurized gas into the chamber after firing.

The invention relates to a recoilless apparatus for firing cartridge-based ammunitions comprising a gun barrel (1) and a compensating mass launch tube (2) wherein a projectile is accelerated in one direction inside said gun barrel counterbalanced by a compensating mass accelerated in the opposite direction inside said launch tube thereby minimizing recoil and further providing means of automatic ammunition handling.

The present invention relates to a cartridge for a premix of flammable gas or inert gas with or without propellant powder, making it possible to propel a mobile at speeds of interest, and reusable. More particularly, a case (10) of the cartridge is designed with an optimized geometry integrating two chambers, an upstream chamber (11) and a downstream chamber (12) forming a longitudinal duct with variable section, and in which said duct has a convergent nozzle shape at an outlet of the upstream chamber (11) opening into the downstream chamber (12), and a flared shape at an inlet of the downstream chamber (12) and relative to the outlet of the upstream chamber, said flared shape being capable of generating a turbulent flow of a fluid propelled through the upstream chamber (11) and entering the downstream chamber (12). Advantageously, this geometry will make it possible to increase the combustion speed in the ballistic phase. Figure for the abstract: Fig. 1.

An automatic recoilless firearm comprising a gun barrel and a compensating mass launch tube in which a projectile is accelerated in one direction inside said gun barrel counterbalanced by a compensating mass accelerated in the opposite direction inside said launch tube thereby minimizing recoil and further providing means of automatic ammunition handling. Said firearm further comprises a bolt or bolts and barrels configured to reduce or eliminate transmission of momentum and mechanical energy to the gun barrels and / or gun body during an operation of the firearm.

The present invention discloses a composite baffle for recoilless gun rear-jet ammunition and a preparation method thereof. Prepreg layer: a plain square carbon fiber prepreg is thinly coated with modified epoxy resin to obtain a first fiber layer; a unidirectional carbon fiber prepreg tape and a glass fiber prepreg are layered and thinly coated with modified epoxy resin to obtain a second fiber layer; a unidirectional carbon fiber prepreg tape and a carbon fiber prepreg are layered and thinly coated with modified epoxy resin to obtain a third fiber layer; the first fiber layer, the second fiber layer and the third fiber layer are sequentially stacked together from top to bottom to obtain a composite layer; the composite layer is molded and cooled to obtain a composite baffle. The composite baffle prepared by the present invention is dispersed into a plurality of 0.1-0.2 mm fiber sheets under the action of gunpowder gas. The sheets fall when encountering wind resistance during flight and will not pose a threat to the rear personnel.

To further reduce recoil in a low-recoil firearm equipped with a counterweight.SOLUTION: There is provided a low-recoil firearm 1 equipped with a counterweight 22. There are two or more counterweights 22a, 22b, and the kinetic energy of a bullet received by a gun barrel 11 is transmitted to each of the counterweights 22a, 22b and dispersed. A stopping mechanism stops each of the counterweights 22a, 22b separately. While the kinetic energy transmitted to one counterweight is dissipated, the stopping mechanism dissipates the kinetic energy dispersed by the two counterweights 22a, 22b.SELECTED DRAWING: Figure 1

To obtain a flying object capable of improving propulsion performance and improving guidance accuracy to targets moving at high speeds.SOLUTION: A flying object 1, which corresponds to ground-to-air, ship-to-air, or air-to-air, comprises: a rotary detonation engine 5 with a thrust deflector 6 that controls a thrust deflection angle to change a thrust axis; a pulse detonation engine 7 with a plurality of nozzles; a seeker 2 that obtains tracking information of a target; an inertial device 3 that obtains inertial information of the flying object 1; and an autopilot 4 that calculates a thrust command and a thrust deflection angle command of the rotary detonation engine 5, which are necessary to correct an error to an expected meeting point with a target on the basis of the tracking information and the inertial information, and a nozzle thrust command of the pulse detonation engine 7, and outputs the commands to the rotary detonation engine 5 and the pulse detonation engine 7.SELECTED DRAWING: Figure 10

The present invention relates to a disruptor barrel assembly comprising a barrel (2) and a compensator (3). The compensator is arranged concentrically around the barrel, with the compensator taking the form of an annular chamber fluidly connected to the interior of the barrel by way of one or more holes (7).

The present disclosure relates to a launch system and method. The launch system and method can include at least a preliminary accelerator tube system (PAT) that can be combined with one or more of a main accelerator tube system (MAT), a flight test tube, or a soft catch. The PAT alone or combined with the MAT can be used for launch of a vehicle for testing and / or for delivery of a payload.

A supplemental propulsion system for a weapon used to fire a projectile includes a barrel and chamber to hold a projectile round. A translating pressure tank surrounds a portion of the barrel, and the pressure tank is configured to translate along the barrel. A recoil spring assembly includes a spring and a pressure plate downstream of the chamber for holding the projectile round. The pressure tank is coupled to the pressure plate such that the spring is configured to stretch upon firing of the projectile and translate the pressure tank along a length of the barrel. The barrel includes a first port configured to selectively align with a first tank port during translation, for the discharge of pressurized gas from the pressure tank. The discharge of pressurized gas occurs rearward of the projectile as it passes through the barrel after firing.

The present invention relates to a disruptor barrel assembly comprising a barrel (2) and a compensator (3). The compensator is arranged concentrically around the barrel, with the compensator taking the form of an annular chamber fluidly connected to the interior of the barrel by way of one or more holes (7).

Techniques are disclosed for automatic detection and analysis of firearm discharge. An apparatus includes at least one processing device configured to obtain first sensor data from a first set of sensors associated with a firearm and to obtain second sensor data from a second set of sensors associated with a subject. The processing device is also configured to detect, based on a first portion of the first and second sensor data, potential discharge events for the firearm. The processing device is further configured to identify, based on a second portion of the first and second sensor data, whether respective ones of the potential discharge events represent actual discharge events. The second portion of the first and second sensor data comprises, for a given potential discharge event, sensor data for a given time period before, during and / or after a given time at which the given potential discharge event is detected.

Techniques are disclosed for automatic detection and analysis of firearm discharge. An apparatus includes at least one processing device configured to obtain first sensor data from a first set of sensors associated with a firearm and to obtain second sensor data from a second set of sensors associated with a subject. The processing device is also configured to detect, based on a first portion of the first and second sensor data, potential discharge events for the firearm. The processing device is further configured to identify, based on a second portion of the first and second sensor data, whether respective ones of the potential discharge events represent actual discharge events. The second portion of the first and second sensor data comprises, for a given potential discharge event, sensor data for a given time period before, during and / or after a given time at which the given potential discharge event is detected.