39results about How to "Increase initial velocity" patented technology

A hybrid gun device composed of two barrels (1,10) that accept energy from combustion of standard propellant (6), one barrel (10) being operative to produce a high intensity electric current to add accelerating energy to a projectile (7) in the second barrel (1) and at least one coil (8) stage to convert energy between electrical and kinetic to cause the projectile (7) to be launched at hypervelocity.

A weapon 1 peripherally discharging projectiles 2a-2n, normally ball bearings, at sustained high rates under centrifugal force has at least one member 11 rotating within a housing, or guide track, 10. Each rotating member 11 has at least one channel, or track, 16 with a radial component within which projectiles 2a-2n received near the center of rotation progress radially outwards until first escaping at 19, and then being ejected at X, under centrifugal force at the periphery of the at least one rotating member 11. A projectile release mechanism controls the timing, locations, and numbers of projectiles released per rotation of the at least one rotating member. This mechanism uses (1) an elongate member 13, substantially positioned along a radius line and within the at least one member 11 with its distal end protruding within the at least one channel 16 and with a proximal end cam follower 13 contacting the interior circumference 181 of (2) a ring cam 18, non-rotating to the housing 10 and movable between positions both coaxial, and displaced, to the rotational axis of the at least one rotating member 11. The elongate arm 13 moves (1) radially outward under centrifugal force of the rotation of the at least one rotating member 11 until its distal end protrudes within the at least one channel 16, therein obstructing passage of projectiles 2a-2n along the channel 16 and any ejection of these projectiles 2a-2n from the periphery of the at least one rotating member 11, until (2) the cam follower 14 of the elongate arm 13 contacts during rotation the cam 181 surface of the ring cam 18, pulling the elongate arm 13 against centrifugal force radially inwards until its distal end ceases to protrude within the channel 16, losing passage of projectiles 2a-2n along the channel 16 for subsequent escape at 19 and for ejection at X.

The invention provides a cannon body structure of a supercritical carbon dioxide gas cannon, which is used for emergency rescue in earthquake relief, emergency rescue and other occasions. The magnesium powder in the heating tube is ignited by electric sparks and releases a large amount of heat, which makes the temperature and pressure of the carbon dioxide in the liquid filling tube rise sharply and quickly reach a supercritical state. When the pressure exceeds the rupture limit of the rupture disc, a rapid jet of carbon dioxide pushes the projectile. Wherein the acceleration connection section in the present invention is composed of an acceleration section and a recoil section, which significantly improves the exit velocity of the projectile, and at the same time significantly reduces the barrel length. The invention has the advantages of simple structure, safety and reliability, fast filling, portability and high efficiency, and is suitable for emergency rescue.

The invention discloses a high-efficiency intermittent aeration mechanism for industrial sewage treatment, which includes an aeration cylinder, a sealing plate, an annular clamping plate, an adjustment mechanism, a transmission mechanism and a connecting groove, and the center of the upper end surface of the transmission mechanism is fixedly connected There is an adjustment mechanism for sealing, and the transmission mechanism includes a spring rod, a gear shaft, a limit rod, a connecting plate, a gear groove, a clamping block, a sealing baffle, a clamping groove, a connecting chute and an air storage pipe. The side wall of the inner end face of the trachea is provided with a connecting chute for positioning. The present invention can improve the dissolution rate of oxygen in the air in the industrial sewage by increasing the muzzle velocity of the gas when it is aerated and discharged by setting the transmission mechanism, the regulating mechanism and the aeration cylinder, and at the same time can carry out the intermittent aeration of the cycle operation, reducing the power consumption of aeration and reducing the cost of sewage treatment in the factory.

The invention discloses a mortar launching device, which comprises a breech, an elastic member, a blocking member and a cylindrical barrel with a bore, the breech is installed at one end of the barrel, and the breech is provided with a The firing pin in the gun bore, the blocking member includes a bushing and a shoulder arranged outside the bushing, the bushing is set outside the firing pin, the first end of the elastic member abuts against the blocking member, The second end abuts on the breech, and the breech is provided with at least one first vent hole, and when the elastic member is in the original state, the first vent hole communicates with the gun bore; When compressed, the shoulder blocks the first vent hole. The mortar launching device can adopt a barrel inner diameter with a small gap under the premise of ensuring that the mortar shell can slide down reliably and the air is discharged from the first exhaust hole in the gun tail, so that the initial velocity of the shell can be increased and the shooting range can be increased. , while effectively improving shooting accuracy.

The invention discloses an energetic insensitizer polyadipate 2-ethyl-2-nitropropylene glycol ester for propellant and its preparation method and application, and polyadipate 2-ethyl-2-nitropropylene glycol ester The structural formula is as follows: wherein 2≤n≤20, and n is an integer. The preparation method uses adipic acid and 2-ethyl-2-nitropropanediol as raw materials, comprising the steps of adding adipic acid and 2-ethyl-2-nitropropanediol to toluene, adding a catalyst, and heating Reflux to toluene for esterification condensation reaction. After the reaction, the temperature was lowered to below 30°C, the reaction solution was washed with water, and the toluene was evaporated under reduced pressure to obtain 2-ethyl-2-nitropropylene glycol adipate. The poly 2-ethyl-2-nitropropylene glycol adipate synthesized by the invention is used as a desensitizing agent in propellants, and has better anti-migration performance, and higher detonation heat and projectile initial velocity than the inert desensitizing agent.