http://www.springfieldspringfield.co.uk/movie_script.php?movie=truth
Springfield! Springfield!
Truth (2015)
- That's debatable.
Consistent with the period,
as is the content of the memos...
which was verified by several sources,
including those close to Killian.
Um, then, uh, what about this?
Um...
"OETR"?
Is this one of the terminologies
that's consistent with the period?
Mm-hm. I believe so.
- What does that stand for?
- Officer Effectiveness Training Report.
Actually, the correct acronym
is OER.
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http://ethw.org/First-Hand:Legacy_of_NTDS_-_Chapter_9_of_the_Story_of_the_Naval_Tactical_Data_System
Engineering and Technology History Wiki
First-Hand:Legacy of NTDS - Chapter 9 of the Story of the Naval Tactical Data System
By David L.Boslaugh, Capt. USN, Retired
The old Workhorse Gets Overloaded
By 1980 the U.S. Navy had 93 ships carrying the Naval Tactical Data System, and by 1998 the total number of NTDS and Aegis ships was projected to number more than 170, meaning that more than half of all USN ships would be fitted with either NTDS or Aegis. The newer ships were equipped with computers having unimaginably more power than the NTDS service test ships, had far more capable display subsystems, and featured thorough integration with other computerized systems. There remained, however, more than 50 ships still equipped with the early NTDS CP-642 unit computers. Even though a third unit computer had been added to these ships, and they had extended memory units, the combat direction systems in these ships were becoming overloaded.
In these ships the computers could no longer process their workload within the required response times. This appeared as delayed responses to data requests, lagging updating of track symbols, blinking symbols, and the ball tab responding too slowly to the track ball. On some ships the systems started showing these symptoms when processing only half of the designed track capacity. Even on some ships equipped with the newer AN/UYK-7 computers these troubles were showing up.
To illustrate the proliferation of automated systems in the fleet, it is instructive to follow the career of one guided missile frigate, in this case USS Wainwright (DLG 28, and later CG 28). When Wainwright was commissioned in 1966 she had two digital CP-642A NTDS unit computers, and in 1972 she got an additional NTDS CP-642B computer. Soon after two CP-789 computers were installed, one serving the Beacon Video Processor and the other functioning as the upgraded Weapons Direction System Mark 11 control formatting unit. In 1974 the ship's Terrier missile systems were converted from analog computers to two CP-848 digital computers, and by the end of 1976 three AN/UYK-20 computers were part of the equipage. One of the UYK-20s served the AN/SPS-48 three dimensional radar's automatic detection and tracking subsystem, and another was the processor for the new Weapons Direction System Mark 14 in which the weapons direction function had been moved out of the heavily loaded NTDS computers. The third UYK-20 was part of the AN/SYR-1 communications tracking set that handled data sent down from an upgraded terrier missile.
http://fas.org/man/dod-101/sys/ship/weaps/an-syr-1.htm
FAS
AN/SYR-1 Communications Tracking Set
The Communications Tracking Set AN/SYR-1 is a communication link used to receive downlink transmissions from the STANDARD missile for use in monitoring and control of the missile. The AN/SYR-1 supports the missile weapon system in shortening the target processing and missile response time for missile inflight orders. Downlinked data is provided through an antenna group consisting of four electronically steered phased array antennas which can simultaneously receive two RF transmissions. Each of the antennas provide coverage of -21 to +76 degrees in elevation and -45 to +45 degrees in bearing. Total antenna coverage is controlled over 360 degrees azimuth by digital commands. A Receiver-Processor Group converts signals into digital form and also provides an interface between the central processor unit and the computer-controlled components of the AN/SYR-1.
http://vcfed.org/wp/2016/03/07/setting-up-the-expanded-museum-in-nj/
Vintage Computer Federation
Setting up the expanded museum in NJ
Posted on March 7, 2016 by Grue
We closed our NJ museum last month and we’re re-opening with twice the exhibit space in time for VCF East next month. This past weekend we brought in some big iron: half of our UNIVAC 1219B mainframe, circa 1965; a Cray YMP-EL supercomputer, from 1992; and a StorageTek 9710 Library Storage Module, hailing from 1995.
The UNIVAC is the same model used aboard Navy ships for weapons control. Left to right: UNIVAC 1219B computer, a.k.a. Mk.-152 Digital Fire Control Computer, a.k.a. CP-848
https://en.wikipedia.org/wiki/Mark_I_Fire_Control_Computer
Mark I Fire Control Computer
From Wikipedia, the free encyclopedia
The Mark 1, and later the Mark 1A, Fire Control Computer was a component of the Mark 37 Gun Fire Control System deployed by the United States Navy during World War II and up to 1969. It was used on a variety of ships, ranging from destroyers (one per ship) to battleships (four per ship). The Mark 37 system used tachymetric target motion prediction to compute a fire control solution. Weighing more than 3000 pounds (1363 kilograms), 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.
Essentially an electromechanical analog computer, the Mark 1 was electrically linked to the gun turrets and the Mark 37 gun director, the latter mounted as high on the superstructure as possible to afford maximum visual and radar range. The gun director was equipped with both optical and radar range finding, and was able to rotate on a small barbette-like structure. Using the range finders, the director was able to produce a continuously varying set of outputs, referred to as line-of-sight (LOS) data, that were electrically relayed to the Mark 1 via synchro motors. The LOS data provided the target's present range, bearing, and in the case of aerial targets, altitude. Additional inputs to the Mark 1 were continuously generated from the stable element, a gyroscopic device that reacted to the roll and pitch of the ship, the pitometer log, which measured the ship's speed through the water, and an anemometer, which provided wind speed and direction.
In "Plot" (the plotting room), a team of sailors stood around the 4-foot-tall (1.2 m) Mark 1 and continuously monitored its operation. They would also be responsible for calculating and entering the average muzzle velocity of the projectiles to be fired before action started. This calculation was based on the type of propellant to be used and its temperature, the projectile type and weight, and the number of rounds fired through the guns to date.
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. Lead angles and corrections were added to the LOS data to generate the line-of-fire (LOF) data. 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.
Once the system was "locked" on the target, it produced a continuous fire control solution. While these fire control systems greatly improved the long-range accuracy of ship-to-ship and ship-to-shore gunfire, especially on heavy cruisers and battleships, it was in the anti-aircraft warfare mode that the Mark 1 made the greatest contribution. However, the anti-aircraft value of analog computers such as the Mark 1 was greatly reduced with the introduction of jet aircraft, where the relative motion of the target became such that the computer's mechanism could not react quickly enough to produce accurate results.
The design of the postwar Mark 1A may have been influenced by the Bell Labs Mark 8, Fire Control Computer 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. Surviving Mark 1 computers were upgraded to the Mark 1A standard after World War II ended.
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- posted by H.V.O.M - Kerry Wayne Burgess 9:27 PM Pacific Time Spokane Valley Washington USA Saturday 17 September 2016
