# Key Features Intuitive swipe based remote control. Read more. It is Fire control computer. The design of the postwar Mark 1A may have been influenced by the Bell Labs Mark 8, which was developed as an all electrical computer, incorporating technology from the M9 gun data computer as a safeguard to ensure adequate supplies of fire control computers for the USN during WW2. The Kerrison Predictor is an example of a system that was built to solve laying in "real time", simply by pointing the director at the target and then aiming the gun at a pointer it directed. ing a central computer for fire control data, loosely based on the system of “director firing” that had developed in naval gun-nery. Then increasingly sophisticated mechanical calculators were employed for proper gun laying, typically with various spotters and distance measures being sent to a central plotting station deep within the ship. One could no longer eyeball the aim with any hope of accuracy. The Germans used servomechanisms to steer their guns only in elevation, and the British began to introduce Remote Power Control in elevation and deflection of 4-inch, 4.5-inch and 5.25-inch guns in 1942, according to Naval Weapons of WW2, by Campbell. The added performance allows basically any input to be added, from air density and wind, to wear on the barrels and distortion due to heating. As in most bureaucratic environments, institutional inertia and the revolutionary nature of the change required caused the major navies to move slow in adopting the technology. AIRCRAFT FIRE CONTROL COMPUTER Filed Aug. 1, 1940 's sheets-sheet 3 FLIGHT AXIS TARGET WING SPREAD PROJECTED WING SPREAD INVENTORS CARL G. HOLSCHUH DAVID FRAM f ff TH EIR ATTORNEY` Patented Sept. 17, 1946 AIRCRAFT mi: CONTROL COMPUTER Carl G. Holschuh, Wood-Ridge, N. J., and David Fram, Brooklyn, N. Y., assignors to Sperry Gyroscope Company, Inc., Brooklyn, N. Y., a … [5][6] These devices were early forms of rangekeepers. They can be used to aim machine guns, small cannons, guided missiles, rifles, grenades, rockets—any kind of weapon that can have its launch or firing parameters varied. in order to cut down or eliminate the amount of information that must be manually entered in order to calculate an effective solution. It was located in the conning tower on the starboard side between the helmsman’s station and the attack periscope. The basic fire control principles of gun against a surface target are then applied to the control of Antiaircraft guns, Antisubmarine Weapons, Torpedoes, Rockets and Guided Missiles. The computer solved the torpedo triangle and calculated the gyro angle and the torpedo spread angle. Once the firing solution is calculated, many modern fire-control systems are also able to aim and fire the weapon(s). During their long service life, rangekeepers were updated often as technology advanced, and by World War II they were a critical part of an integrated fire control system. Alternatively, an optical sight can be provided that an operator can simply point at the target, which is easier than having someone input the range using other methods and gives the target less warning that it is being tracked. Pages E-5 and E-6 (1 sheet) was torn out of the original we scanned. [13] It is a major advantage for a warship to be able to maneuver while engaging a target. CCFM (Consolidated Compartment Fire Model version VENTS) is a two-layer zone-type compartment fire model computer code. Simple systems, known as lead computing sights also made their appearance inside aircraft late in the war as gyro gunsights. floydj said: To control your Fire Stick using the PC, install an Android emulator (I use "BlueStacks 4"). Opinions differed on which was the best point in the ship's roll to fire, but most gunners tried to fire at the beginning or end of the roll, when the ship was momentarily stationary. Fire Control Fundamentals, NAVPERS 91900, 1953, was created to introduce sailors to the basics of weapons fire control. Firestick Remote Control allows you to control your fire TV directly from iPhone/iPad using intuitive swipe based touch controls. Torpedo Data Computer Mark 3, Mark 3, Mods 5 to 12 inclusive, O.P. Given these inputs, the Mark 1 automatically computed the lead angles to the future position of the target at the end of the projectile's time of flight, adding in corrections for gravity, relative wind, the magnus effect of the spinning projectile, and parallax, the latter compensation necessary because the guns themselves were widely displaced along the length of the ship. Arthur Pollen and Frederic Charles Dreyer independently developed the first such systems. FCC - Fire-Control Computer. Fire control equipment installed in the gun houses includes devices which elevate and train the guns automatically in response to gun orders from the computer, as well as instruments and controls which allow the gun crews to check the automatic settings and to position the guns manually in the event of failure of the automatic positioning equipment. The ability to fire rapidly and accurately and then shift to another position is critical in ensuring the efficiency as well as safety of the military troops. Most bombsights until this time required that the plane maintain a constant attitude (usually level), though dive-bombing sights were also common. These devices used a gyroscope to measure turn rates, and moved the gunsight's aim-point to take this into account, with the aim point presented through a reflector sight. Keyboard feature to simplify text input and search. Learn how and when to remove this template message, List of U.S. Army fire control and sighting material by supply catalog designation, Tartar Guided Missile Fire Control System, "The Mechanical Analog Computers of Hannibal Ford and William Newell", "Chronology of the USS Monitor: From Inception to Sinking", "The Evolution of Battleship Gunnery in the U.S. Navy, 1920–1945", "Located/Surveyed Shipwrecks of the Imperial Japanese Navy", "Older weapons hold own in high-tech war", "Defending the Superbomber: The B-29's Central Fire Control System", "BLOW HOT-BLOW COLD - The M9 never failed", "Design hindsight from the tail-gunner position of a WWII bomber, Part one", "Fire-Control and Human-Computer Interaction: Towards a History of the Computer Mouse (1940-1965)", Between Human and Machine: Feedback, Control, and Computing Before Cybernetics – Google Books, BASIC programs for battleship and antiaircraft gun fire control, https://en.wikipedia.org/w/index.php?title=Fire-control_system&oldid=996268461, Armoured fighting vehicle vision and sighting equipment, Articles needing additional references from May 2008, All articles needing additional references, Articles needing additional references from July 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 25 December 2020, at 14:56. Early systems made use of multiple observation or base end stations (see Figure 1) to find and track targets attacking American harbors. Benefits. In "Plot" (the plotting room), a team of sailors stood around the four-foot-tall (1.2 m) Mark 1 and continuously monitored its operation. for the forecast years. GUN FIRE CONTROL SYSTEM MARK 37 — ... With the computer control switch at LOCAL and the Range Rate Control Switch (fig. This proced… It is considered a masterpiece of mechanical computing design. The only manual "input" to the sight was the target distance, which was typically handled by dialing in the size of the target's wing span at some known range. Weighing more than 3,000 pounds (1,400 kg),[2] the Mark 1 itself was installed in the plotting room, a watertight compartment that was located deep inside the ship's hull to provide as much protection against battle damage as possible. The performance of the analog computer was impressive. 3. For example, The rangekeeper in this exercise maintained a firing solution that was accurate within a few hundred yards (or meters), which is within the range needed for an effective rocking, Bennett, "A History of Control Engineering". The effectiveness of this combination was demonstrated in November 1942 at the Third Battle of Savo Island when the USS Washington engaged the Japanese battleship Kirishima at a range of 8,400 yards (7.7 km) at night. Dispersion of shot caused by differences in individual guns, individual projectiles, powder ignition sequences, and transient distortion of ship structure was undesirably large at typical naval engagement ranges. These systems can be found on weapons ranging from small handguns to large artillery weapons. For example, the US Navy used servomechanisms to automatically steer their guns in both azimuth and elevation. Corrections are made for surface wind velocity, firing ship roll and pitch, powder magazine temperature, drift of rifled projectiles, individual gun bore diameter adjusted for shot-to-shot enlargement, and rate of change of range with additional modifications to the firing solution based upon the observation of preceding shots. The system was eventually replaced by the improved "Admiralty Fire Control Table" for ships built after 1927.[9]. This new bomb computer was revolutionary in that the release command for the bomb was given by the computer, not the pilot; the pilot designated the target using the radar or other targeting system, then "consented" to release the weapon, and the computer then did so at a calculated "release point" some seconds later. These measurements were converted by the Fire Control Table into the bearings and elevations for the guns to fire upon. Guns could then be fired in planned salvos, with each gun giving a slightly different trajectory. The report on Global Mortar Fire Control Computer Market offers in-depth analysis on market trends, drivers, restraints, opportunities etc. Once the system was "locked" on the target, it produced a continuous fire control solution. The former were less able to range on an indistinct target but easier on the operator over a long period of use, the latter the reverse. The LOF data, bearing and elevation, as well as the projectile's fuze time, was sent to the turrets by synchro motors, whose motion actuated hydraulic machinery to aim the guns. Kirishima was set aflame, suffered a number of explosions, and was scuttled by her crew. Both are complete with navigation system, self-laying capability and fire control computer. It's advised to make a bridge on ship and put this in there, and add a chair and a Vehicle Controller as well. The British favoured coincident rangefinders while the Germans favored the stereoscopic type. 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