Editing Air Defense Anti-Tank System (section)

{{Short description|Self-propelled Anti-Aircraft and Anti-Tank Missile System}}
{{Use dmy dates|date=December 2019}}
{{Infobox weapon
| name               = ADATS
| image              = File:ADATS 2008.JPG
| caption            = ADATS on display for the 2008 [[Royal Nova Scotia International Tattoo]]
| origin             = [[Switzerland]] / [[United States]]
| type               = Self-propelled [[Anti-Aircraft|anti-aircraft]] and [[Anti-Tank|anti-tank]] missile system
| is_vehicle         = yes
| used_by            = [[Canada]]<br>[[Thailand]]
| length             = 4.86 m
| width              = 2.69 m
| height             = 
| weight             = 15.8 tonnes
|number={{plainlist|*Canada: 36 
*Thailand: 4 
*USA: 2}}
| suspension         = [[torsion-bar]]
| speed              = {{convert|58|km/h|mph|abbr=on}}<ref name="DND">{{cite web|url=http://www.army.forces.gc.ca/land-terre/equipment-equipement/item-eng.asp?product=65|title=Canadian Army Equipment – ADATS|publisher=[[Department of National Defence (Canada)]] | archive-url=https://web.archive.org/web/20110610131640/http://www.army.forces.gc.ca/land-terre/equipment-equipement/item-eng.asp?product=65 | archive-date=10 June 2011 }}</ref>
| vehicle_range      = 400 km
| primary_armament   = 8 ADATS missiles
| secondary_armament = M242 Bushmaster 25 mm cannon (US evaluation version only)
| armour             = 12–38 mm [[aluminium]]
| engine             = 6-cylinder [[two-stroke]] [[diesel engine|diesel]] [[General Motors Corporation|General Motors]]/[[Detroit Diesel]] [[Detroit Diesel Series 53|6V53]]
| crew               = 3 (commander, driver, system operator)
| engine_power       = 212 hp (158 kW)
| pw_ratio           = 13 hp/tonne
}}

The '''[[OC Oerlikon|Oerlikon]]/[[Martin Marietta]] air defense anti-tank system''' (US designation '''MIM-146 ADATS''') is a dual-purpose [[Short Range Air Defense|short range]] [[surface-to-air missile|surface-to-air]] and [[anti-tank guided missile|anti-tank]] missile system based on the [[M113 armored personnel carrier|M113A2]] vehicle.  The ADATS missile is a [[laser guidance|laser-guided]] [[supersonic]] missile with a range of 10 kilometers (6.2 miles), with an [[electro-optics|electro-optical]] sensor with TV and [[forward looking infrared]] (FLIR). The carrying vehicle also has a search radar with an effective range of over 25 kilometers (16 miles).

The first firing of an ADATS missile occurred in June 1981. Canada was the launch customer for the system with 36 units on the [[M113]] chassis ordered for the [[Canadian Army]] in 1986.  The system was further developed and produced at a new facility in [[Québec]]. The [[US Army]] also selected ADATS installed on the [[M2 Bradley]] chassis but by the time it was ready for service the ending of the [[Cold War]] led the US Army to cancel its orders, after Oerlikon invested over [[Swiss franc|CHF]] 1 billion in the project.<ref>{{cite book|last1=Hug|first1=Peter|last2=Meier|first2=Ruedi|title=La reconversion: transformer en emplois civils les postes de travail liés à l'armée|date=1993|publisher=Editions d'en bas|location=Lausanne, Switzerland|isbn=2-8290-0198-2|page=15}}</ref> A small number of vehicles, many of them the developmental prototypes, entered service with the Canadian Army.