Teep 81 (missile)

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Teep 81 (Tan-SAM)
Type 81 SAM - launcher.jpg

JASDF Fire Control Systems vehicle.
JASDF launcher and
Fire Control Systems vehicles
TeepMobile, short-range surface-tae-air missile
Place o oreeginJapan
Service history
In service1981–present
Uised biJapan
Production history
No. biggitApprox. 1,800
Wecht100 kg
Lenth2.7 meters
Diameter160 mm
Warheid9.2 kg HE-fragmentation
Contact and radar proximity

IngineNissan Motor single-stage solid-fuel rocket motor
Weengspan600 mm
0.5 - 14 km
Flicht ceilin15 to 3,000 meters
SpeedMach 2.9
Kawasaki Heivy Industries inertial guidance with Toshiba passive infrared homing for terminal guidance
Isuzu Motors 6×6 Type 73 armoured mobile truck

The Teep 81 Surface-tae-Air Missile (81式短距離地対空誘導弾) or Tan-SAM (短SAM) is a Japanese developit surface-tae-air missile currently in service wi the Japan Ground Sel-Defence Force.

Development[eedit | eedit soorce]

The seestem wis developit bi Toshiba as a replacement for the 75 mm M51 Skysweeper an M15A1 37 mm/12.7 mm anti-aircraft guns. Designed as a mobile short-range seestem tae fill the performance gap atween the FIM-92 Stinger man portable missile, an the lairger MIM-23 Hawk missile seestem, which war baith in service at the time. Development work began in 1966, wi the first test firings conductit in 1978. The seestem wis designatit as the Teep 81 bi the JSDF, an contracts war placit for the seestem in 1980. The seestem enterit service in 1981. In 1987, minor changed seestem SAM-1B wis designatit.

Development work on an upgrade designatit Tan-SAM Kai stairtit in 1989.[1] Upgradit seestem wis designatit as SAM-1C in 1995, initial production on upgrade kits for the seestem stairting in 1996. Twa fire units war schedulit tae be upgraded in 2000, wi work on the program continuing intae 2006.

Development work on an upgrade designatit Tan-SAM Kai II stairted in 2005.

In 2014, the new teep o short-range surface-taw-air missile designatit as Teep 11 wis offeecially unveilit, which as Tan-SAM Kai II research & development results, wad replace the Teep 81.

Description[eedit | eedit soorce]

The tripod-mounted optical tracking unit

The Tan-SAM 1 missile is cruciform in cross section wi fower clippit delta weengs attached tae the mid body, an fower smaw steerable clippit delta fins at the rear o the missile. The missile is propellit bi a solid rocket motor, wi giein it a burn-oot velocity o aboot Mach 2.4. It is initially inertially guided to a likely intercept pynt, wi an all-aspect infra-red seeker takkin ower to handle terminal guidance. The missile haes a 9.2-kilogram fragmentation warheid triggered aither bi contact or a radar proximity fuze wi a lethal radius o atween 5 an 15 meters dependin on the target teep.

A fire unit conseests o ane Fire Control Seestem vehicle an twa launcher vehicles as well as a number o support vehicles wi a tot crew o fifteen men. The Fire Control Seestems vehicle conseests o an Isuzu Motors 6×6 truck wi a 30 kW generator unit moontit behind the driver's cabin, an a rectangular three-dimensional pulse-doppler phased array radar. The radar can operate in three modes: omni-directional sairch, sector sairch/course tracking mode, an fine tracking mode. The radar is scanned baith mechanically an electronically an can track up tae sax targets within the same 110-degree arc in course tracking mode. Twa targets can be tracked in fine tracking mode at greater accuracy, wi the single-shot kill probability for each target relayed tae the operator via a CRT display. The radar haes a range o aboot 30 kilometers, an haes biggit in IFF capabilities.

Information on the twa selectit targets is then passed tae the twa attached launcher units, which are awso moontit on Isuzu Motors 6×6 trucks, which slew an elevate thair launchers toward the target. The launchers can be deployed up tae 300 meters away frae the Fire Control Seestem vehicle. An intercept course is computit for the missile, an the missile is launched. The missile follows the initial inertial course until it reaches a pre-programmed pynt whaur it activates its infrared seeker. The infrared seeker anly scans a programmed aurie o the sky to prevent it frae locking onto the sun. Frae that pynt it switches to passive infrared homing for the terminal phase o the flight.

The infrared seeker daes nae uise IR filters tae reject decoys, awtho thare is a degree o pertection providit bi the uise o intermediate frequency seeker scanning pattern.

Each launcher is equippit wi an optical director than can be uised insteid o the radar in a heich ECM environment or if the radar is nae operational; additionally the vehicle can be moontit wi ane or twa 12.7 mm calibre heivy machine guns, for self-defence in frontal forrit auries against ground threats an close-in(<500 m) incoming air threats. The seestem can be set up in approximately 30 minutes, an the launcher reload time for all fower missiles is aroond three minutes.

SAM-1C upgradit missile uise a phased array active radar seeker, wi the capability o receiving mid-course guidance updates frae the Fire Control Seestems vehicle. The upgrade awso increases the missiles maximum range tae 14 kilometers while increasin the missile wecht tae 105 kilograms. A new smokeless motor wi improved thrust is an aw fitted, replacing the existin motor. Awso the Fire Control seestems vehicle is fittit wi a thermal eemager tae impruive operation in an ECM heivy environment.

Deployment[eedit | eedit soorce]

The seestem is currently deployed bi the JGSDF, JASDF an JMSDF wi 57 fire units serving wi the ground force (oot o an initial requirement for 76), 30 serving wi the air force, an 6 serving wi the maritime force.

Notes[eedit | eedit soorce]

References[eedit | eedit soorce]

  • Jane's Strategic Weapon Systems Issue 44
  • Jane's Land-Based Air Defence 2005–2006
  • "81式短距離地対空誘導弾". Archived frae the oreeginal on 2007-12-12. Unknown parameter |deadurl= ignored (help)