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- Tachymetric_anti-aircraft_fire_control_system abstract "A tachymetric anti-aircraft fire control system generates target position, speed, direction, and rate of target range change, by computing these parameters directly from measured data. The target's range, height and observed bearing data is fed into a computer which uses the measured change in range, height and bearing from successive observations of the target to compute the true range, direction, speed and rate of climb or descent of the target. The computer then calculates the required elevation and bearing of the AA guns to hit the target based upon its predicted movement.The computers were at first entirely mechanical analog computers utilizing gears and levers to physically perform the calculations of protractors and slide rules, using moving graph charts and markers to provide an estimate of speed and position. Variation of target position over time was accomplished with constant-drive motors to run the mechanical simulation.The term tachymetric should more properly be spelled as \"tachometric\" which comes from the Greek \"takhos\" = speed, and \"metric\" = measure, hence tachometric, to measure speed.An alternative, non-tachometric, gonometric method of AA prediction is for specially trained observers to manually estimate the course and speed of the target and feed these estimates, along with the measured bearing and range data, into the AA fire control computer which then generates change of bearing rate, and change of range data, and passes it back to the observer, typically by a \"follow the pointer\", indicator of predicted target elevation and bearing or by remote power control of the observer's optical instruments. The observer then corrects the estimate, creating a feed back loop, by comparing the observed target motion against the computer generated motion of his optical sights. When the sights stay on the target, the estimated speed, range, and change of rate data can be considered correct.An example of tachometric AA fire control would be the USN Mk 37 system. The early RN High Angle Control System (HACS) I through IV and the early Fuze Keeping Clock (FKC) were examples of non-tachometric systems.By 1940 the RN was adding a Gyro Rate Unit (GRU) which fed bearing and elevation data to a Gyro Rate Unit Box computer (GRUB), which also received ranging data to then directly calculate target speed and direction, and this tachometric data was then fed directly to the HACS fire control computer, converting the HACS into a tachometric system.".
- Tachymetric_anti-aircraft_fire_control_system wikiPageExternalLink tr223.pdf.
- Tachymetric_anti-aircraft_fire_control_system wikiPageExternalLink index.htm.
- Tachymetric_anti-aircraft_fire_control_system wikiPageID "21875754".
- Tachymetric_anti-aircraft_fire_control_system wikiPageLength "3705".
- Tachymetric_anti-aircraft_fire_control_system wikiPageOutDegree "9".
- Tachymetric_anti-aircraft_fire_control_system wikiPageRevisionID "631822075".
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink Analog_computer.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink Anti-aircraft_warfare.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink Category:Military_computers.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink Category:Naval_anti-aircraft_weapons.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink Fire-control_system.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink Fuze_Keeping_Clock.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink Gyro_rate_unit.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink HACS.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLink Ship_gun_fire-control_system.
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLinkText "Tachymetric anti-aircraft fire control system".
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLinkText "tachymetric instruments".
- Tachymetric_anti-aircraft_fire_control_system wikiPageWikiLinkText "track the enemy aeroplanes".
- Tachymetric_anti-aircraft_fire_control_system wikiPageUsesTemplate Template:Reflist.
- Tachymetric_anti-aircraft_fire_control_system subject Category:Military_computers.
- Tachymetric_anti-aircraft_fire_control_system subject Category:Naval_anti-aircraft_weapons.
- Tachymetric_anti-aircraft_fire_control_system type Class.
- Tachymetric_anti-aircraft_fire_control_system type Computer.
- Tachymetric_anti-aircraft_fire_control_system comment "A tachymetric anti-aircraft fire control system generates target position, speed, direction, and rate of target range change, by computing these parameters directly from measured data. The target's range, height and observed bearing data is fed into a computer which uses the measured change in range, height and bearing from successive observations of the target to compute the true range, direction, speed and rate of climb or descent of the target.".
- Tachymetric_anti-aircraft_fire_control_system label "Tachymetric anti-aircraft fire control system".
- Tachymetric_anti-aircraft_fire_control_system sameAs Q7673860.
- Tachymetric_anti-aircraft_fire_control_system sameAs m.05pccww.
- Tachymetric_anti-aircraft_fire_control_system sameAs Q7673860.
- Tachymetric_anti-aircraft_fire_control_system wasDerivedFrom Tachymetric_anti-aircraft_fire_control_system?oldid=631822075.
- Tachymetric_anti-aircraft_fire_control_system isPrimaryTopicOf Tachymetric_anti-aircraft_fire_control_system.