Page 1 of 5 FAS Military DOD 101 Systems Dumb Bombs Index Search CBU-89 Gator Mine The CBU-89 Gator Mine, a 1,000-pound cluster munition containing antitank and antipersonnel mines, consists of a SUU-64 Tactical Munitions Dispenser with 72 antitank mines, 22 antipersonnel mines, and an optional FZU-39 proximity sensor. Mine arming begins when the dispenser opens. Mine detonation is initiated by target detection, mine disturbance, low battery voltage, and a self-destruct time-out. The antitank mine is a magnetic sensing submunition effective against tanks and armored vehicles. The antipersonnel mine has a fragmenting case warhead triggered by trip wires. The US Air Force employed 1,105 CBU-89s during the Gulf War. The Gator mine system provides a means to emplace minefields on the ground rapidly using high-speed tactical aircraft. The minefields are used for area denial, diversion of moving ground forces, or to immobilize targets to supplement other direct attack weapons. Gator consists of two companion systems. The Air Force CBU-89/B is a 1000-pound class cluster weapon using the SUU-64/B Tactical Munitions Dispenser (TMD). The TMD is the same general configuration used for the CBU-87/B Combined Effects Munition. This commonality allows for high-rate, low-cost production of the dispenser. The Navy CBU-78/B is a 500-pound class cluster weapon that uses the Mk7 Rockeye dispenser. Rockeye has been in high-rate production for many years; the Mk7 dispenser is also a low-cost item. Both systems contain a mix of BLU-91 /B antitank (AT) and BLU-92/B antipersonnel (AP) mines -- 72 AT and 22 AP for the CBU-89/B; 45 AT and 15 AP for the CBU-78/B. Commonality of mines for both systems also contributes to high-rate, low-cost production. The BLU-91 /B AT mine is the heart of the Gator system. Microelectronics in each mine detect targets, discriminate armored vehicles, and detonate the mine when the target reaches the most vulnerable approach point. A Misznay-Schardin explosive charge defeats the belly armor of most vehicles. The BLU- 92/B AP mine serves to discourage minefield clearing. Upon activation, the AP mine explosion sends high-velocity fragments in a horizontal plane over a wide area. Both mines have a programmable self-destruct feature which permits the battlefield commander to control the timing of a counterattack or defensive maneuver. The self-destruct time is set just prior to aircraft takeoff using a simple selector switch on the dispenser. This feature permits a high degree of tactical flexibility during combat operations. The size of the Gator minefield is determined by the opening height of the dispenser. After dispenser opening, the mines are self-dispersed using aerodynamic forces. The mine pattern on the ground is directly proportional to opening altitude, which is controlled by either the dispenser electromechanical faze or an optional proximity sensor. Aerojet Ordnance Company (AOC) is the system integration prime contractor for Gator. All elements of the system are either procured by Aerojet or furnished by the US Government. The company is responsible for total system performance, including live testing. Each month three Gator systems are randomly selected from the production line
Page 2 of 5 and flight tested. Aerojet Ordnance Company warrants system performance for five years, assuring Gator reliability. Contractor Weight: Length: Diameter: Specifications Aerojet General / Honeywell 710 pounds 92 inches 16 inches
Page 3 of 5 Guidance: Control: Autopilot: Propulsion: Warhead: Fuse: Aircraft Limitations Delivery Envelope Unit Cost List Price none 72 BLU-91/B anti-tank 22 BLU-92/B anti-personnel Integral part of dispenser FZU-39/B proximity sensor F-15 4 F-16 F/A-18 4 A-10 30 B-52 B-1B B-2 200 feet to 40,000 feet 200 knots to 700 knots airspeed $39,963 [$ FY90] GATOR GENERAL Longer range than any other available FASCAM system Emplaced anywhere a tactical aircraft can reach Delivery Systems: *Air Force: A-10, F-15E, F-16, B52, B-1B, B-2 *Navy: F-18, AV-8B Systems: *Air Force: CBU 89/B: 94 mines (72 AT, 22 AP) *Navy: CBU 78/B: 60 mines (45AT, 15AP) Average area covered is 200 x 650 meters Three selectable SD times: 4 hrs; 48 hrs; 15 days Not an on-call system, must nominate 72 hrs prior to get on ATO EMPLOYMENT Primarily used at long range with intent to disrupt, fix, and block GATOR is the light force commanders long range anti-armor weapon
Page 4 of 5 Placement is not precise Good for placing on a specific concentration of forces Employed in conjuction with CAS and other deep indirect fired attacks Limitations: *Coordination for and acquiring aircraft *Units in column are poor targets *Communications (Joint Army-Air Force Operations) CORPS ASSET (BECAUSE OF AIRCRAFT) Reference FM 20-32, pages 6-11 to 6-13 EMPLACEMENT MISSION MUST BE REQUESTED 72 HOURS IN ADVANCE THROUGH NOMINATION AT DIVISION TARGETING BOARD MAY BE ALLOCATED DOWN TO BATTALION LEVEL EXTENSIVE COORDINATION BETWEEN G3/S3, ENGINEER, ALO MINEFIELD ORIENTATION IS CHANGED TO ACHIEVE DESIRED AFFECT 275m SAFETY ZONE AROUND MINEFIELD MINEFIELD NOT MARKED Reference FM 20-32, pg 6-11 to 6-13 Scatterable Mine Employment of a Gator Minefield
Page 5 of 5 Sources and Resources FAS Military DOD 101 Systems Dumb Bombs Index Search Maintained by Robert Sherman Updated Monday, September 14, 1998 7:48:57 AM