Development Procedure
History Background
In 1950s, the United States began to develop Strategic solid ballistic missiles, and successfully developed successful and deployed LGM-30 Series (militia 1, militia 2, militia 3) and LGM-118 (Peace Guard / MX) ballistic missile launched. It also develops the northern star series (A1, A2, A3), PLA C3 and Trident I ballistic missiles.
In the early 1980s, the LGM-118 ballistic missile and UGM-96A ballistic missiles developed by the United States entered the flight test stage.
Because the fixed launch well is prone to attack, the significant accuracy of the latent strategic ballistic missile in the same period of the Soviet Union has been considered a huge threat. In order to maintain an advantage and deterrence in the world nuclear strategies, the US military community proposes the "offset strategy" nuclear theory, improves the survival capacity of strategic nuclear power, and requires a new type, single warhead, high survival capacity, and ballistic missile launched. Mainly used to attack the strategic objectives of the enemy's residual residual damage to reinforcement missile underground launch, command control centers and the first strategic nuclear strike. Based on this, the US Air Force launched the development of MGM-134A ballistic missiles (gnome).
Development History
On 11 April 1983, the US Presidential Strategic Strength Committee was established, and the mobile Intercontinental ballistic missile was named as a small intercontinental ballistic missile (SiCBM). It officially proposed a new missile. In May, the US Air Force established the MGM-134A ballistic missile "Gnome" Planning Bureau, determined that the main contractor was Martin Mary Tower Group Strategic System Company.
In 1986, the comprehensive development phase of the MGM-134A ballistic missile project begins.
On May 11, 1989, the first flight test of the MGM-134A ballistic missile and the result failed.
On April 8, 1992, the second flight test of the MGM-134A missile was carried out and successfully succeeded.
MGM-134A ballistic missile originally planned 500, 15 years of service period, total plan fee of $ 36.4 billion, which has cost $ 8.7 billion, and procurement costs of $ 25.2 billion. The MGM-134A ballistic missile unit price is 3.2 million US dollars (all in 1988 dollar coins).
Technical Features
Overall Design
MGM-134A ballistic missile is generally added by the three-stage solid rockets, MK21 re-enter the aircraft and payload The components such as whole flow cover are composed. The full bomb is loaded on a motor vehicle and is emitted with an emitted cartridge.
The solid rocket engine housing, level segment and internal structural members of the missile are made of high strength graphite / epoxy composite. The end helping the promotion of the promotion system and several small liquid boosters in the projecting warhead. The effective load full flow cover is coupled together, and the third stage is in the initial period of the small solid engine to run away the whole solid motor, and the mass of the engine is 8 kilograms. It is 2.6 kg high-raised permeable polybutiene (HTPB) promotion. The agent is 5340 cattle, the total flush is 4.27 kni · second.
In order to improve the survivability of the nuclear war environment, the US military coated a layer of thickness of 6.35 ~ 12.7 mm in the outer surface of the MGM-134A ballistic missile / Ternary ethylene The protective layer of diene rubber.
Dynamic device
MGM-134A ballistic missiles are both solid propellant grades, and the fourth stage is a liquid-ended promotion. The first three levels of missiles use LGM-118 "Peace Guard" missiles third-stage PEG / NG high-energy nitrate plastic polyether composite column. The propellant is bonded to a polyether prefether (PEG) and oxytate (CAB), which is a plasticizer in liquid nitrate or mixed nitrate (NG-BTTN), but also Oakkin. Component with chloride and aluminum powder, theoretical ratio of 2650 cattle, seconds / kg.
MGM-134A ballistic missiles The engine housings at each stage of the high strength medium modulus are wrapped around the 1m7 graphite fiber / HBRF-55A epoxy resin composite material. Each of the engines are carbon / phenolic nobles, and the outlet cone is three-dimensionally automatically woven and passed through the NOVOLTEX carbon / carbon woven fabric.
The first solid engine mass is 11.34 tons, 7.62 meters in length, 1.168 meters in diameter, 41 second working hours. The second-stage solid engine mass is 3.175 tons, 3.05 meters long, 1.168 meters in diameter, and 44 seconds. The third-level engine mass is 1.542 tons, 1.83 meters long and 1.168 meters in diameter. The engines from all levels use new laser fire-ignition systems.
Guidance Control
The inertial guidance component of the MGM-134A ballistic missile is a high-grade inertial reference ball, compared to the inertial reference ball in the LGM-118 ballistic missile guide assembly, the missile The guidance system cancels the coolant storage system to reduce the quality of 22.7 kg. Circuit transistor performance is improved, re-encapsulate the circuit and reduce the quality of computer; improve the performance of the transistor in the platform; reducing the quality of the anti-nuclear reinforcement computer, improves the function; in addition, the circular laser gyro Formulating devices and star light inertial guidance devices. The improved guidance system improves the precision and reliability of the hit, and the structural quality of the missile has also been reduced, and the launching time is shortened, and it is more suitable for working in a motor environment in onboard.
Wirkeene
MGM-134A ballistic missile adopts one bullet MK21 / W87 of LGM-118 ballistic missile (Peace Guard / MX), the warhead mass is 194 kg, 1.75 meters long length The bottom diameter is 0.554 meters, the end radius of 35.6 mm, half cone angle 8.2 degrees, and the explosive power is 30 to 475,000 tons of TNT equivalents.
Ground equipment
MGM-134A ballistic missile launch platform is the reinforced motor launch vehicle (HML) developed by Boeing / Good Il, composed of two parts: tractor and launching trailer While it is a heavy-duty tire vehicle having an anti-nuclear reinforcement. Among them, the tractor is a four-axis eight rounds, with two drivers. The launcher is a three-axis six wheels, which is equipped with anchor, which can be fixed to the ground.
September 1985, the reinforced missile motor launched car sample made of approximately 28 meters, a width of about 3.7 meters, a height of about 1.83 meters, a driving speed of 96 kilometers / hour. The front of the launch vehicle is the tractor, which is 20.4 tons, and the rear is loaded into the missile, which is about 74.8 tons.
MGM-134A ballistic missile is also equipped with a command, control, communication, and intelligence (c 3 I) system, mainly by a soft fixed transmitting control center (SFLCC ), Ground motor transmission control center (GMLCC) and repeated C 3 network configuration. The entire C 3 I system is maintained with the motorized launch vehicle through high frequency and very high frequency communication lines. The entire emission preparation time is 15 minutes.
Performance data h2>
MGM-134A ballistic missile reference data:
| Basic parameters | Bear length | < Td width = "578"> slide | 1.21 meter | 16.78 tons | performance parameters | payload | 454 kg | 11100 km | 183 m (CEP circular probability error) (90 m) |
|---|---|---|---|---|---|---|---|---|---|
| Wireflower | |||||||||
| Wirch model | W-87 warhead one piece | Wiring Power | 300,000 tons TNT equivalents (475,000 tons TNT equivalents) | ||||||
| Wire Quality | 194 kg | ||||||||
| Burning load | Guidance mode | inertial guidance (light high level inertial reference ball) | |||||||
| power unit | |||||||||
| Dynamic power | Liquid Rocket Engine (Fourth) | ||||||||
| operating time | Transmit mode | Overall EvaluationMGM-134A ballistic missile is a new type of motorized mobile phone small intercontinental strategic missile developed by the United States, which collects militia 3, LGM-118 ballistic missile and UGM-96A The advanced technology of the ballistic missile will become an important part of the US strategic nuclear deterrent force. MGM-134A ballistic missile project has also been questioned by "high development deployment costs". The US Air Force is estimated that deploying MGM-134A ballistic missiles requires an additional to 47,000 troops to complete the tasks such as manipulation, maintenance and security. Moreover, the MGM-134A ballistic missile does not have the protection of concrete underground launches, which is difficult to experience the high heat and shock wave effects generated during the Soviet nuclear warhead explosion. ("System Engineering and Electronic Technology" "Foreign Missile and Aerospace" commentary) |
