Modern Artillery

Modern artillery is distinguished by its large calibre, firing an explosive shell or rocket, & existence of such the size & weight when to take the specialised mount for firing and shipping. Weapons covered by this term in the include "tube" artillery like a howitzer, cannon, mortar, and field gun and "rocket" artillery.

A term "artillery" has traditionally non been utilized for projectiles sustaining internal guidance systems, even though a select few artillery uses surface-to-surface missiles. Recent advances around terminal counsel device for little munitions has allowed big calibre surfaces to exist as fitted by having preciseness guidance fuses, blurring this distinction.

Types

A types of tube artillery come usually distinguished by their ballistic trajectory. Cannons or even guns (like infantry support guns or those on the naval ship) come occasionally elongated-barreled, great-trajectory weapons designed for the direct-fire role. Generally the length of a cannon barrel is greater than Xxv days its caliber (inner across).

Howitzers are usually shorter- & thinner-barreled. Capable of two high- & on line-angle fire, it is virtually all typically listed within the close indirect-fire role, operating around defilade. Usually the length of a mortar barrel is between 15 & 25 days its caliber.

Mortars are little, super short-barrel, high-angle weapons capable of merely high-trajectory fire at a comparatively short range in comparison the more types. Generally the length of a mortar barrel is less than Xv days its caliber.

Modern field gun can likewise become split into deuce more categories: towed & self-propelled. When the title implies, towed artillery has the prime mover, normally a jeep or truck, to move the piece, crew, & ammunition in the area of. Self-propelled trench mortar come for even good mounted in a carriage or vehicle using room for the crew & ammunition & capable of moving independently sequentially to move quickly from either a single firing position to a second - to two trend lines the fluid nature & severity of modern combat and to make sure your not counter-battery fire. There are as well mortar host vehicles, numbers of of which allow a mortar to become flushed from either a vehicle & become utilized dismounted, possibly inside terrain a vehicle potty't acquire to or even sequentially to refrain from quick detection.

Sub-types

Types of artillery: field artillery - mobile weapons utilized to trend lines armies in the field. Subcategories include: infantry support guns - directly support foot units (mostly obsolete). mountain guns - lightweight weapons that can be transit hard terrain. howitzers - capable of high angle fire. gun howitzers - capable of high or even moo angle fire by using an extended barrel. mortars - lightweight weapons that fire projectiles at an angle of over 45 degrees to the horizontal. self-propelled artillery - typically guns, mortars or gun mortar mounted in the vehicle. naval artillery - cannons mounted on combat ship & utilized either against more ships or even inside trend lines of ground forces. A crowning accomplishment of naval artillery was a battleship, but a advent of air-power & missiles use rendered this nature and severity of artillery largely obsolete. coastal artillery - Fixed-position weapons dedicated to defense of the particular location, ordinarily a coast (e.g. a Atlantic Wall in WW II) or harbor. Non looking for to become roving, coastal artillery may be great deal big than tantamount field artillery pieces, rendering the two yearn range & other destructive power. Since Globe War II, notwithstanding, modern weapons & maneuver develop manufactured the children largely obsolete. anti-aircraft artillery - weapons, usually roving, dedicated to fighter from either a ground.

Projectiles
All forms of artillery require a propellant to fire the projectile at the target. A number of different configurations have been developed, each with varying characteristics. They include: Tube fired - utilise the pressure of burnt propellant inside a barrel to force a projectile out of the mouth of the barrel. Spin stabilised - Use helical grooves or ridges on the inside of the barrel to impart a rotation to the projectile as it is travelling in the barrel. Fin stabilised - Use fins at the rear of the projectile in the airflow to maintain correct orientation. Inverted tube - Some weapons have been built with the tube built into the projectile and fitted onto a rod fitted to the carriage. Recoilless - A tube fired weapon with a breech designed to perforate a bursting disk at firing, and permit a mass of burnt propellant gases with momentum equal to the projectile to exit from the rear of the barrel, to prevent recoil from affecting the weapon. Rocket propelled - Tube or rail launched - A reaction propulsion system mounted to the projectile provides continuous thrust for an initial period of the flight. Rocket assist - A combination of tube fired and rocket propelled - uses a rocket motor in the base of the projectile to extend the range by about 30%. Base bleed - Similar to a rocket assist projectile, uses a small pyrotechnic charge at the base of the projectile. The charge introduces sufficient combustion products into the low-pressure region behind the base of the projectile responsible for a large proportion of the drag to substantially (> 30%) increase range. Like a rocket assist projectile, trajectory is changed to non-ballistic, which may complicate counter-battery location.

Ammunition
High-explosive; shrapnel, dual purpose improved conventional munitions (DPICM)- bomblet; canister or anti-personnel; illuminating or star-shell; armour-piercing; incendiary (white phosphorus, "Willie Pete"); gas or aerosol, chemical or biological; smoke; nuclear and non-lethal (developing area - includes High Power Microwave HPM, and NL payload carrier shells).

Fuses
Quick or super-quick; delay; hardened-delay or concrete-piercing; timer; proximity.

Modern artillery operations
Depending on the calibre of the weapons, artillery is used in a variety of roles. Mortars fire relatively short range and small- to medium-calibre (up to about 120 mm) projectiles. Modern mortars, because of their lighter weight and simpler, more transportable design, are usually organic to infantry and armor units, allowing greater responsiveness and negating their shorter range.

Howitzers are generally used in direct support of infantry and armor, where the guns of a battery or even a battalion will be massed to fire simultaneously onto a single point or area target. Howitzers are usually between about 105 mm and 155 mm in calibre.

Counter-battery fire

Attacks aimed at enemy artillery rather than infantry or fortifications are known as counter battery fire.

Radar coupled to computers can accurately track a projectile in flight back to its firing point. This can be used as targeting information for an enemy artillery site.

When artillery fire is directed via radio by a forward observer (FO), the location of FO's transmitter can be calculated and attacked with artillery as well. If successful, this counter-attack will limit the effectiveness of the FO's artillery fire. Radar also improves the all-weather flexibility of modern artillery.

The rise in counter-battery abilities has driven field artillery to adopt "shoot-and-scoot" tactics emphasizing constant maneuver within a designated position area, usually from hide point to firing point and back again. This has required reliance on sometimes temperamental technology and increased the cost of modern field artillery systems.

The field artillery team

Modern field artillery (Post-World War I) has three distinct parts: the forward observer (or FO), the fire direction center (FDC) and the actual guns themselves.

Because artillery is an indirect fire weapon, the forward observer must take up a position where he can observe the target using tools such as binoculars and laser range finders and designators and call back fire missions on his radio. This position can be anywhere from a few thousand meters to 20-30 km distant from the guns.

Using a standardized format, the FO sends either an exact target location or the position relative to his own location or a common map point, a brief target description, a recommended munition to use, and any special instructions such as "danger close" (the warning that friendly troops are within 600 metres of the target, requiring extra precision from the guns). Once firing begins, if the rounds are not accurate the FO will issue instructions to adjust fire and then call "fire for symptom."

The FO does not talk to the guns directly - he deals solely with the FDC. The forward observer can also be airborne and in fact one of the original roles of aircraft in the military was airborne artillery spotting.

Typically, there is one FDC for a battery of six guns. The FDC computes firing data, fire direction, for the guns. The process consists of determining the precise target location based on the observer's location if needed, then computing range and direction to the target from the guns' location. These data can be computed manually, using special protractors and slide rules with precomputed firing data. Corrections can be added for conditions such as a difference between target and howitzer altitudes, propellant temperature, atmospheric conditions, and even the curvature and rotation of the Earth. In most cases, some corrections are omitted, sacrificing accuracy for speed. In recent decades, FDCs have become computerized, allowing for much faster and more accurate computation of firing data.

The final piece of the puzzle is the "gun line" itself. The FDC will transmit the fire order to the guns, specifying the number of volleys, a particular shell and fuze combination, the specific charge, a deflection (horizontal direction) and quadrant elevation (vertical direction) both specified in milliradians (mils), and any special instructions, such as to wait for the observer's command to fire relayed through the FDC. The crews load the howitzers and traverse and elevate the tube to the required point, using either hand cranks (usually on towed guns) or hydraulics (on self-propelled models).

Technology Impact

It is possible for modern computer-controlled artillery to fire more than one volley at a target and have all the shells arrive simultaneously, which is called MRSI (Multiple Rounds Simultaneous Impact). This is because there is more than one trajectory for the rounds to fly to any given target - typically one is below 45 degrees from horizontal and the other is above it, and if you can vary the amount of propellant with each shell, you can create more trajectories. Because the higher trajectories cause the shells to arc higher into the air, they take longer to reach the target and so if the shells are fired on these trajectories for the first volleys (starting with the shell with the most propellant and working down) and then after the correct pause more volleys are fired on the lower trajectories, the shells will all arrive at the same time. This is useful because many more shells can land on the target with no warning. With traditional volleys along the same trajectory, anybody at the target point will have a certain amount of time (however long it takes to reload and re-fire the guns) to run away or take cover between volleys. In addition, if guns in more than one location are firing on one target, with careful timing it can be arranged for all their shells to land at the same time for the same reason.

Examples of MRSI guns are South Africa's Denel G6-52 (which can land six rounds simultaneously at targets at least 25 km away) and Germany's Panzer Haubitze 2000 (which can land five rounds simultaneously at targets at least 17 km away). The United States Crusader programme (now cancelled) was slated to have MRSI capability.

When an effect similar to that of MRSI is achieved using separate batteries of traditional artillery, using varying fuses to account for the variant distances or trajectories to cause all shells to detonate on the target at the same time, it is called TOT (Time On Target). The logic behind this practice is the same as that for MRSI: to surprise the enemy and to sow confusion when guns heard to be firing at different times nonetheless result in deadly explosions in the same instant.

An additional wrinkle can be added when some or all of the shells are set for airburst, meaning they explode in the air above the target instead of upon impact. This is a very effective tactic against infantry and light vehicles because it scatters the shrapnel over a larger area and prevents the blast shockwave from being blocked by terrain, but usually proves ineffective against troops or equipment protected by even rudimentary fortifications. However, airbursts are probably more likely to impact units protected by trenches and revetments, since the shrapnel can enter them from above, while a ground-burst nearby would simply cause the shrapnel to impact the walls or fly overhead.

History
The word as used in the current context originated in the Middle Ages. It comes from the Old French atellier meaning "to arrange", and attillement meaning "devices". From the 13th century an artillier referred to a builder of any war equipment, and for the next 250 years the sense of the word "artillery" covered all forms of military weapons.

Older engines like the catapult, onager, trebuchet and ballista are artillery, but the modern term really dates from the mid 15th century with bombards and then cannon.

Bombards are the earliest of gunpowder artillery, distinguished by their lack of a field carriage, immobility once emplaced, highly individual design, and noted unreliability. The use of the word cannon marks the introduction of a dedicated field carriage with axle, trail and horse-drawn limber - this produced mobile field pieces that could move and support an army in action rather than being found only in siege and static defences. Cannon were always muzzle-loaders, casting technology having standardised and removed the often dangerous breech-loading design.

Cannon operation was still a complex technical task, often undertaken at high-speed and in stressful conditions, where a mistake could easily be lethal. The field carriage eased movement in general, but traverse and elevation were still very limited and slow - the crew ramming levers, handspikes, to force a movement of a few degrees. Larger movements were by brute force shoves of the entire unit, as was repositioning after recoil, an extremely enervating task.

The combining of shot and powder into a single unit, a cartridge, occurred in the 1620s with a simple fabric bag, and was quickly adopted by all nations. It speeded loading and made it safer, but unexpelled bag fragments were an additional fouling in the gun barrel and a new tool - a worm - was introduced to remove them. Shells, explosive-filled fused projectiles, were also developed - problems with the fuses were extremely common. The development of specialised pieces - shipboard artillery, howitzers and mortars - was also begun in this period. More esoteric designs, like the multi-barrel ribaudequin, were also built.

The 17th century book by Polish-Lithuanian Commonwealth inventor Kazimierz Siemienowicz "Artis Magnae Artilleriae pars prima" ("Great Art of Artillery, a Foremost A share". also known as "A Complete Art of Artillery") was one of the most important contemporary publications on the subject of artillery. For over two centuries this work was used in Europe as a basic artillery manual.

Oddly the development of cannon almost halted until the 19th-century, improvements in metallurgy, chemistry, manufacturing, and so on, did not alter the basic design and operation of a cannon. From the 1860s artillery was forced into a series of rapid technological and operational changes, accelerating through the 1870s and on. The main impetus was the improvements in small arms, which certainly had not spent 200 years in the doldrums. Artillery could no longer be deployed in the battle line, the large crews and stocks of ammunition were vulnerable to rifle fire, but had to either become smaller, lighter, more mobile and stay with the troops or get much further away. The second type, using indirect fire, forced the development of the technologies and doctrines that produced modern artillery.

technical - metal, propellant, recuperation, manufacturing - obturation, etc. doctrine - direct vs indirect fire, predicted fire, observed fire - forward observation, pre-planned fire - registered fire, barrage, creeping barrage, STOP (simultaneous time on top)

Quotations

"God fights unofficially by owning a better artillery." - Napoleon Bonaparte. Another version of this quotation is: "God is on the side of the stronger battalion"

"We don't stand to explain world health organization won a war. We understand, a artillery did." - Gen George S. Patton

"My artillery... A Germans despised it nigh to a higher degree anything you experienced." - Ernie Pyle "Brave Men", AD 1944

"Artillery is the god of war." - Stalin

"Contrary to popular belief, i personally at artillery command don't suppose you're God. I just borrowed his "Smite" button." - Anonymous

"the Mission of the Artillery is to give occasionally class to what would otherwise become simply a vulgar brawl." - Some Redleg (American Artilleryman, since their dress blue uniforms have red stripes). This quotation has also been attributed to Frederick the Great.

"Forgoing trend lines a foot won't move." (In Hebrew it rhymes) - The motto of the Israeli Artillery Corps.

"Foot err, foot die. Artillery err, foot die." -IDF black humor slogan

"A bombs land by using awing explosions, a globe milk sickness, a upcast of craters jets in everyone's thoughts, a troops come shocked per shock wave, numerous bleed from either noses or even even perforated ear drums, it is terrorized into apathy or unlimited panic. However unless a enemy is nearby & ready to advance immediately, a moment lives." - Edward Luttwack