Question

Explain the working of the smoke gun in terms of the

difference in the pressure.



Please right answer dena.​

Answer 1

Smokeless powder is a type of propellant used in firearms and artillery that produces lower amounts of smoke when fired, unlike black powder. The basis of the term "smokeless" is that the combustion products are mainly gaseous, compared to around 55% solid products (mostly potassium carbonate, potassium sulfate, and potassium sulfide) for black powder.[1] Despite its name, smokeless powder is not completely free of smoke;[2]:44 while there may be little noticeable smoke from small-arms ammunition, smoke from artillery fire can be substantial.



Finnish smokeless powder

Burnt gunpowder leaves a thick, heavy fouling that is hygroscopic and causes rusting of the barrel. The fouling left by smokeless powder exhibits none of these properties (though some primer compounds can leave hygroscopic salts that have a similar effect; non-corrosive primer compounds were introduced in the 1920s[3]:21). This makes an autoloading firearm with many moving parts feasible (which would otherwise jam or seize under heavy black powder fouling). Smokeless powder allowed the development of modern semi- and fully automatic firearms and lighter breeches and barrels for artillery.

Smokeless powder was originally invented in 1884 by Paul Vieille.

The most common formulations are based on nitrocellulose, but the term was also used to describe various picrate mixtures with nitrate, chlorate, or dichromate oxidizers during the late 19th century, before the advantages of nitrocellulose became evident.[3]:146–149

Smokeless powders are typically classified as division 1.3 explosives under the UN Recommendations on the transportation of Dangerous goods – Model Regulations, regional regulations (such as ADR) and national regulations. However, they are used as solid propellants; in normal use, they undergo deflagration rather than detonation.

Explanation:

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Answer 2

Answer:

Internal ballistics in firearms refers to the period of time between the ignition of the propellant and the projectile's egress from the barrel. For the manufacturers and users of all types of firearms, from small-bore rifles and pistols to high-tech artillery, the study of internal ballistics is crucial.

Explanation:

• The burning propellant serves as the energy source. It produces hot gases that increase the pressure inside the chamber.
• The missile accelerates as a result of the pressure pushing against its base. Numerous things affect the chamber pressure. the volume of the chamber, the temperature of the gases, and the amount of propellant that has burned.
• The shape of the propellant grains as well as the chemical composition of the propellant has an impact on how quickly it burns. The temperature is influenced by both the energy released and the heat lost via the barrel and chamber's sidewalls.
• As the propellant burns, the chamber's capacity changes continuously as more space becomes available for the gas to fill.

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