NL8100698A - BULLETS, GARNETS AND ROCKETS, EQUIPPED WITH A STRAIGHT TAPE CONTINUOUS CHANNEL. - Google Patents

Description

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Bullets »Grenades and Missiles with a rectilinear tapered continuous channel *

To increase the distance range *

To reduce flight time.

5 To increase effective pregnancy *

To increase the daring ability *

To improve accuracy.

In the case of a (cylindrical) body moving through a gas or gas mixture (the medium), an area with overpressure (pressure front) is created at the front, and an area with underpressure (vacuum) at the rear.

Both areas slow down the body *

The form. these areas are respectively a slightly flattened spherical segment and a cone, in which the pressure and volume will be inversely proportional; together they form the prevailing atmospheric pressure.

The increase in the speed of the body will cause the pressure distributions to spread concentrically over the front and back surface of the body. In addition, the overpressure could increase infinitely, the underpressure could drop to a minimum of zero. (Otherwise - 'one would end up in negative pressure). in principle, the maximum differential pressure will lie on the main axis, especially the point of maximum overpressure »while the vacuum expands over the rear face. By connection a cone is obtained, with the point of maximum overpressure as the center of the negative pressure, where the pressure could drop to zero, as the base plane «For one. channel so a truncated cone, the reason why it should be rectilinearly tapered * "*

By streamlining at the front of the body, as is generally used, the overpressure or delay is reduced. However, by also connecting the -pressure centers through a rectilinear tapered channel, the differential pressure greatly decreasing retarding regions will largely cancel each other, reducing the body's velocity decay (iCogels and Gra-35 nats) and increasing the speed of missiles , (with thrust unchanged).

As a result of the streamlining, the point of maximum overpressure will no longer be on the main shaft, but the remaining pressure front will still be 81 00 69 8 'C 2} ie site; be big enough. to connect that by the channel to the vacuum on the rear face, whereby the flow velocity of the medium through the channel will always be greater than the body velocity and will increase in more than one sense with the velocity of that body,. .. .. ..

the power of a moving gas, air, (apart from pressure, temperature and humidity differences) = 0.5 x. 1,293 mg / cmx 2 is the area in cm xde.speed in the 3rd power. Or reverse -.-. in turn, the retarding power to a body traveling through that medium 10, but reduced by the straw outline used, not yet taking into account the retardation due to the vacuum on the rear face.

At low body speeds it will be little effective, but at high, eg 1000 m / s (about the initial velocity of a rifle bullet), or very high as with ballistic missiles, that effect will be great. Γ.

With a relatively wide channel, the mass / volume loss and crosswind sensitivity will be great; with a relatively narrow channel, your resistance will increase in the channel. * 20 With a body of known diameter and speed, the most favorable channel diameter at the tip to determine (the passage), a number is obtained which can serve as the basis for a ratio constant that applies to all other body diameters (calibers) Young, depending on the density of the medium. In vials the channel diameter is 2 for a body diameter of 10, then the ratio constant is 5. -

In the case of rockets, the centrally located thruster will have to be replaced by placing several stubs in a circle around the circumference, or replacing it with an annular thrust gap. 30 Stability increases, thereby also increasing (Broader forward bafrs sis) ·

Furthermore, I propose to ban banter balls at international convention, due to the toxicity of lead and to replace it with fully alloy steel balls of greater hardness. missiles to use a tapered tube corastruction. To compensate for the mass / volume loss due to the channel by elongating the body.

Make the diameter of balls slightly below the nominal size 8 1 00 69 8 C 2) and then this. can be covered with a layer of softer metal mat excess, so that the balls can be pressed through the (smooth) loap gas-tight and without a lot of running wear, whereby the soft metal may also serve as a solder to confirm the cover plate or cap (= plate 'provided with a conical point, which falls into the channel to prevent displacement). The cover plate {jejof cap (je), nbdig to fire bullets and. grenades, it is pre-soldered behind them with a solder, the melting point of which is sufficiently lower than the heat of the propellant gas, to remain in the molten state even after leaving the barrel. the large overpressure of the propellant the plate ^ jejöf cap (je) remain pressed against the projectile, so close the channel and melt the solder, after which this.

Very shortly after leaving the barrel, when the initial overpressure turns into underpressure, immediately behind the projectile, these are aspirated, which is further promoted by the medium which presses against the inside of the plate or cap through the channel. As soon as it leaves the projectile, the channel becomes functional. * In a method * without solder, a rebate or supports will have to be fitted in the sleeve on which the plate or cap rests, possibly with the use of a Moisture-resistant agent between plate and projectile. The direction of tilt of the plate or cap can be predetermined by removing a segment from it.

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Since Ekin. = 0.5 x m. Xv, the total pressure difference on the plate or cap due to the medium will clearly have to be more than the kinetic energy that the plate or cap has after the course of the run, otherwise it will remain channel closed »The.

The mass of the plate or cap will thus have to be small. Possibly by using a light metal alloy.

Due to the expiry of the extreme point and the flow of the medium through the channel, the stability will have increased, whereby the rotation could be dropped and the energy required for the rotation will benefit the initial speed.

Due to the taper of the channel, the center of gravity of the body will move forward. The tapered pin. necessary for the installation of the channel bg bullets is direct weld when withdrawing from the mold. The material choice I leave entirely the metal lye. Q ή 00 69 8

Claims (1)

ê V (O Bullets, Grenades and Missiles from 'up to' usual construction replaced by Bullets, Grenades and Missiles characterized by 'the' property of a 'STRAIGHT TAPE, rear divergent channel, sooty it purpose is to so advantageously eliminate the retarding differential pressure of the medium, including the plate (je) or tiop (jé), as well as the applying solder, to make the aforementioned bullets and grenades cost effective. $ 1 00 69 8