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Intercontinental ballistic missile LGM-30G Minuteman-3

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    Basing

    :

    Mine PU

    management system:

    management software

    Warhead:

    spetsboepripasov

    Application:

    Strategic

    Country:

    U.S.

    Range:

    13000 km.

    year development:

    1972

    intercontinental ballistic missile lgm-30g minuteman-3 The decision to create a new ballistic missile, which received the designation LGM-30G" Minuteman-3 "was adopted in July 1965., when the U.S. Air Force General Headquarters signed corporation with "Boeing" first contract for research and development of promising missiles, a further development of ICBMs "Minuteman-2" and essentially unified with the latest in order to reduce costs and requirements for the development of time. In April 1966. Air Force General Headquarters issued an instruction manual system (System Management Directive) SMD 6-61-133B (10), defines the requirements for a new weapon system. The main requirements include: improved governance, increased range and throw weight, increased resistance to PFYAV complex, a new set of tools to overcome (PCB) ABM. equipment and reentry warhead with thermonuclear warheads independently targetable (MIRV). Subcontractors contract is firm: "Thiokol" - development of the first stage of the march; "Aerojet General" - development of the second stage of the march; "Thiokol" together with "Aerojet General" - development of the third stage of the march (later the main contractor for this stage was department "Chemical Systems Division" (CSD) corporation "United Technologies Corp." (UTC)); "Rocketdyne" - development of liquid dilution steps; "Autonetics" - the development of the control system and the onboard computer on electronic components development and production "Texas Instruments"; "General Electric" - development of the fairing, combat unit (WB) is a new generation of IRT PRO, total systems integration MIRV. Warhead traditionally designed, tested and manufactured in laboratories and factories by the Atomic Energy Commission (Atomic Energy Commission). Already in July 1966. combat unit, designated Mk12, was first tested at the ICBM "Minuteman-2" from the landfill at Cape Kennedy (Patrick Air Force Base, Florida).

    Originally

    deploy new ICBM to be implemented in existing silos OS built for earlier versions of the complex "Minuteman" with further study of new home options, providing increased survival. One such alternative was the program "Hard Rock Silo Program" (build silos in hard rock), which was first announced Defense Minister McNamara in October 1967. Specific consideration of all the details of the program began in June 1968., And it was announced that for the purposes of long-term deployment of ICBMs is most suitable position area near Air Force Base FE Warren (WY). Deployment in existing silos OS declared as a temporary option. However, in June 1970. program "Hard Rock Silo" was closed. Priority was given to routines "Silo Upgrade" / "Hardness Modification", ie the upgrading of existing silos and CP within the overall program "Minuteman Force Modernization Program" (MFMP). Within these routines planned to equip all silos advanced electronic equipment with increased resistance to PFYAV, new damping system and modify the roof of the mine. Thickness of the roof increased by 25cm and weigh down on the 20t with a special heavy concrete with high boron content. Introduced a special system of protection of electrical equipment against electromagnetic pulse of a nuclear explosion by a relay samoblokirovok, electronic filters and surge spark arrester. Was modified for filtering. KP also planned to equip more resistant to PFYAV advanced electronic equipment and a special system of protection of electrical equipment from EMP nuclear explosion. Modified so as to ground-based WS-133A Block 0 and Block 1 received designation WS-133A-M Block 0 and Block 1, respectively (system WS-133B designation has not changed). Later, it was also decided to implement the subroutine "Command Data Buffer (CDB) / Improved Launch Control System" - to provide centralized remote retargeting standing in ICBM silos. In addition, new equipment was to reduce the likelihood nesanktsioniruemogo missile launch. These programs have been implemented in full before January 1980 at all ICBM bases "Minuteman-2/3", except Ellsworth base. Except 150 ICBMs LGM-30G at Minot Air Force Base, it was decided to expand the "Minuteman-3" position in the following areas: Grand Forks Air Force Base (321 th Strategic Missile Wing), North Dakota (150 ICBM) Force Base F. E . Warren (90th Strategic Missile Wing), Wyoming (200 ICBMs) Malmstrom Air Force Base (341st Strategic Missile Wing), Montana (50 ICBM). IDB LGM-30G housed in silos only ground-based WS-133A-M Block 1 and WS-133B, which together with the geological features of the areas of deployment of these missiles to ensure the highest survival rate of the entire fleet of U.S. ICBMs.

    Given the high degree of unification of the new ICBM missiles developed earlier in the same family, the pace of work were not high enough - in August 1968. The first test ICBM LGM-30G from the landfill at Cape Kennedy, Florida. In April 1970. first ICBM "Minuteman-3" came to be deployed in position area the 91st Strategic Missile Wing (Air Force Base, Minot, North Dakota). In June 1970. the first link of 10 ICBMs LGM-30G was considered fit for SAC Air Force combat duty. Crews have started to be on duty on the new technology in August of the same year. Also in 1970. began test launches new ICBM Vandenberg Air Force Base. Given the earlier successes in implementing the "Minuteman Force Modernization Program" (MFMP), back in 1969. it was decided to reduce the rate of change and its implementation are - a new idea was to replace the remaining missiles "Minuteman-1B" (and some missiles "Minuteman-2") latest ICBM "Minuteman-3", which allowed without change the total number of deployed ICBMs significantly increase the power of the national components of the strategic nuclear forces at a relatively moderate cost. Finally, the deployment of new MBRzakonchilos in July 1975., When the mine was installed last, I-550 ICBMs LGM-30G. In addition, by the end of the first half of the 70s equipped near Grand Forks Air Force Base (which, apart from the latest 150 ICBMs "Minuteman-3", hosted 319 th Heavy Bomber Wing, which included the strategic bombers B-52H " Stratofortress "strategic airlift and tanker KC-135A" Stratotanker ") position area Nekoma missile defense system" Safeguard "(with interceptor missiles" Spartan "and" Sprint "). "Safeguard" became fully operational by October 1975., But already in 1976., After assessing the real potential of the Soviet strategic nuclear forces, the system was withdrawn from combat duty in 1978. completely conserved (except radar, integrated in the missile attack warning U.S.).

    Composition

    intercontinental ballistic missile lgm-30g minuteman-3 Almost immediately after the deployment of ICBMs LGM-30G began to modernize - in 1971. program has been initiated "Dust Hardness", whose main aim was to modernize stage rocket engine nozzles breeding in order to protect them against the ingress of dust particles. First ICBM "Minuteman-3" were upgraded in 1972. In September, 1974. Air Force General Headquarters approved the program "Rivet Save Minuteman Modification Program", the aim of which was to reduce the number of combat crews ICBM "Minuteman" with 3 to 2 people while reducing duty objection period from 36 to 24 hours. In addition, the program establishes a new, more resistant to PFYAV equipment manual also reduces the risk of unauthorized launch rockets reduced by one member of the crew. The program was completed by April 1978. In 1974. were initiated two programs, whose purpose was to increase the combat effectiveness of the new missile by modernizing warheads. The first program was a program of development and equipping of new ICBMs, more accurate and resistant to PFYAV BB Mk12A with much more powerful thermonuclear warhead. BB Mk12A deployment began in 1979. The second program was the "Pave Pepper". The purpose of this program was to develop an ICBM for "Minuteman-3" more compact new generation of BB. As part of the "Pave Pepper" in 1975. from Vandenberg Air Force Base was carried out two test launches of ICBMs "Minuteman-3." According to various sources, the maximum number of warheads to the rocket reaches 7 pieces. However, the test results were significantly determined that such a large number of BB as a whole reduced the effectiveness of the original MBR and the program was closed.

    In February 1977. President J. Carter ordered the dismissal of ICBMs "Minuteman-3." Last, I-830 issued by the Air Force ICBM was adopted in November 1978. Hill Air Force Base, Utah. Overall, it was manufactured in 2423 ICBM "Minuteman" all modifications. In 1978. it was decided to modernize the control system "Minuteman-3" to improve shooting accuracy and stability to PFYAV. In 1979. Advisory Board recommended that the Air Force modernization BB Mk12 to improve the accuracy characteristics of BB to BB level Mk12A. In 1982. it was decided to further control system modernization of ICBMs "Minuteman-3" in order to improve reliability and maintainability. In February 1983. announced the completion of the deployment process BB Mk12A - 300 of them received 550 ICBMs "Minuteman-3." Despite the substantial increase in combat effectiveness of missiles with new BB in terms of increasing the probability of destruction of the strong goals, there was a marked decrease in the firing range with the new BB and IRT PRO, which is why a number of bases of the USSR Strategic Missile Forces (primarily in the south) were outside the reach of U.S. missiles. Also decreased the area of separation area warheads. Therefore, part of ICBMs "Minuteman-3" continued to carry on duty with the old, less efficient but lighter BB (BB Mk12 modernization in accordance with the decision of 1979. Was completed in September 1985.).

    In April 1985. program was launched "Rivet MILE" (Minuteman Integrated Life Extension), the purpose of which was to improve the silos and manual system "Minuteman". In 1987. at all launch sites under this program began installing the improved system for physical security IMPSS (Improved Minuteman Physical Security System). In 1989. began a gradual replacement of machines, conveyors stages of ICBMs, machinery installers in silos, equipment validation codes in the manual administration, emergency battery, etc. Work on the program "Rivet MILE" was basically completed in 1992. In the second half of the 80s all controls have been modified to ensure incurring duty crew of women or of mixed composition. Measures have been taken to reduce noise in the manual - American data, previously the average noise level in the CP reached 70 dB (90 dB at maximum mode), which is certainly tired crews. Program to reduce the noise level allowed by the installation of a special coating inside the gearbox and change algorithms for individual operations several alleviate this problem. In January 1986. began de-alerting of 50 ICBMs "Minuteman-3" at RAF FE Warren, which ended in April 1988. - Instead of these missiles in silos upgraded deployed ICBMs 50 "Peacekeeper". The number of deployed ICBMs "Minuteman-3" in 1988. stabilized at 500 missiles. In 1987. program was initiated reproduction series of spare parts for the ICBM "Minuteman-3", which ended in 1990. In 1988. the results of research program was initiated modernization of the second and third stages of ICBMs sustainers "Minuteman-3" - in the course of these programs in the housing steps to install a new solid fuel, increased stability of the hull and internal nodes to PFYAV (third stage was made at the same time again.) < / p>

    new stage for the LGM-30G missiles began in 1992., after the result of the Soviet-American treaty processes were decommissioned ICBM "Minuteman-2" program and discontinued development of advanced strategic systems "Peacekeeper Rail Garrison" , and "Midgetman". Reduce the proportion of the defense budget for strategic systems, extended (by the then analysts USAF) ICBM life "Minuteman-3" to 2020., Which required further enhancement. Prospective ICBM beyond 2020., Exploring the concept of which began in the first half of the 90s, has received tentative name "Minuteman-IV". In 1992. after the dissolution of all of the NAO with the MDBs were introduced in the Command of military aviation. In 1993. all parts with the IDB were incorporated into the Air Force Space Command, where it remains today. In 1992. began work on the study and implementation of the program SRV (Single Reentry Vehicle), which was supposed to allow a reduction in the number of ICBM warheads to a "Minuteman-3" from 2-3 to 1 st - in 2001. was announced the first stage of the program when all ICBMs at RAF FE Warren began to "unload" to 1 BB rocket. In the same year, work began under the program "Rivet ADD" - under this program in 1992 and 1994. Malmstrom Air Force Base instead of removed from combat duty ICBM "Minuteman-2" in silos upgraded OS (complex WS-133A-M Block 0) installed ICBM "Minuteman-3." Total was found 30 rockets, the number of simultaneously deployed missiles "Minuteman-3" rose to 530 units. In March 1995. in the same program "Rivet ADD" was announced on the Elimination of GMD ICBM "Minuteman-3" Air Force Base Grand Forks - 150 of 120 deployed missiles transferred to Malmstrom Air Force Base, and 30 were stored, that returns the number of deployed ICBMs this type to the level of 500 units. From September 1995 to June 1998, all work was performed in the same year, 321-I missile group (1994-1996. All missile wings with 150 silos have been relegated to the level of groups, 1996 91th Missile Group, Minot Air Force Base, again received the status of wings in 1997. all missile wings were named cosmic wings previous designation restored in 2008) and was disbanded in August 2001. all silos OS (except one, saved for museum purposes) and all KP Grand Forks Air Force Base were killed.

    in 1993. began research work on the program Guidance Replacement Program (GRP) - the aim of the program is the complete modernization of control system with the replacement of all the major hubs on the modern, which should improve the reliability and maintainability of the system together with increased resistance to PFYAV and accuracy (up to approximately ICBM Peacekeeper) . Work on replacing the necessary control elements were carried out in 2000-2008. In 1994. were initiated research program Propulsion Replacement Program (PRP). In the course of this program to be replaced with solid fuel propulsion in all three stages of ICBMs while improving reliability, maintainability, and resistance to PFYAV etc. Perform all planned work began in 2001., Completion of work scheduled for 2009

    intercontinental ballistic missile lgm-30g minuteman-3

    In 1995

    . began work on the modernization of the equipment within the KP major program REACT (Rapid Execution And Combat Targeting). All the work on making changes in the equipment command posts missiles "Minuteman-3" has received the official designation of "Modification MN-3413" R & D on this complex work began August 1986. All work was completed in 1996. In order to provide solutions to increasingly complex problems in the equipment and systems enterprise since its inception has been made a lot of changes - with the emergence of a new variant tasking Checkpoint established a new or upgraded communications equipment and receive commands command and control, additional storage units and the introduction of SU ICBM flight missions. But the interest savings and urgency, which attached to the work on modernization of control systems terrestrial components of the American nuclear triad, led to the fact that changes in the design have been made without the manual integration of the new with the existing equipment, excluding military ergonomics requirements and to ensure the habitability, not always taken into account even just the limited amount of space enterprise. As a result of this situation is that the members of combat crews RK "Minuteman-3" in a combat situation were overloaded operations control systems functioning missile system, acceptance, validation and implementation of coming through various channels combat control teams, which, according to U.S. military experts and significantly increases the performance of teams and could potentially disrupt the performance of tasks. As quite illustrative example is proved by the fact that members of the combat crew manual from their jobs simply do not have the opportunity to simultaneously observe all warning placards, technical efficiency indicators missile complex systems and control modes of communications - a number of critical indicators was behind the members of the calculation at a great distance from their jobs, and out of their line of sight. Much more serious, however, was that the indiscriminate introduction of the KP ever new hardware has led to what appeared to be completely exhausted opportunities to expand reserves CPU memory management missile system, which required replacement of computational tools manual. REACT has become a comprehensive program to eliminate all these drawbacks. Installing an integrated set of communication with the supreme command and receive commands instead of separate command and control communication hardware (through the modernization of communication systems MEECN - Minimum Essential Emergency Communications Network) will increase the capacity of communication channels and the processing speed (and including decryption) entering information on KP. This, along with the replacement of spent CPU and the introduction of a new mathematical software (MO) in the means of preparing and putting into SU missile flight missions, made possible the rapid retargeting standing on alert ICBMs. It is important to note that with the completion of the modernization of the equipment manual missiles "Minuteman-3" program REACT retargeting missiles can be carried out practically without any restrictions - on the gearbox with a higher command post information is transmitted, containing little more than a new geographic coordinates of the mobile target (or new target coordinates), and the calculation and preparation of a new flight mission through the introduction of a powerful processor and a new specialized MO carried out directly on the CP. The whole process of refocusing for one ICBM takes about 15 minutes - compared with the previous 25 minutes using an apparatus CDB, and flight tasks facing all ICBMs on alert "Minuteman-3 'may be replaced in 10 hours.

    From the 1970s until the introduction of "Modification MN-3413" for standing retargeting missiles on alert to make use of the so-called KP buffer command information (CDB, Command Data Buffer), which were stored in machine-readable form several options flight missions for each of the controlled from this manual ICBMs. However, CDB options laid flight tasks previously centrally designed and prepared, so you can actually talk only about retargeting missiles within a few rigidly defined options of implementing the strategic plan forces, and not the Early targeting of new or mobile targets. Even within these predefined options target environment divert all ICBMs 20th Air Force U.S. Air Force required about 20 hours. (Prior to the subroutine CDB retargeting ICBM carried out directly on the starting positions in the SU by overwriting new missile flight missions from tape. To replace flight missions on all ICBMs "Minuteman-3" took several weeks). When modernizing enterprise developers REACT program was considered prior negative experience, and in equipment manual provides interfaces for new prospective blocks which, replacing outdated, organically integrated complex will be included in the hardware manual. One of these units became modernized terminal MMRT (Modified Miniature Receiver Terminal) satellite communications MILSTAR (frequency range 225-400 MHz), the installation of which all controls had been foreseen in the period from 1999 to 2003 From 1996 to 2003, and began of completed equipment manual equipment ISST (ICBM SuperHighFrequency Satellite Terminal) to receive commands via satellite command and control microwave link (7.2 GHz) through relay satellites DSCS 3. In 2006. all controls have been modified program LCC Netlink Upgrade, which provided combat crews high speed Internet access. Besides the above mentioned communication systems, an essential element of command and control systems of the RK "Minuteman-3" are air command posts ALCS (Airborne Launch Control System), originally these were WCP special aircraft EC-135 "Looking Glass". ALCS system has greatly increased the probability of bringing teams to launch ICBMs in case of emergency. If in a normal situation to start a 50-ICBM missile squadron calculations required concerted action of two of the five squadrons of KP, then the system was sufficiently ALCS joint action settlement of one CP and EC-135 aircraft. Over the years of the Cold War in the air was kept at least one aircraft EC-135 in full readiness, the maximum number of such aircraft is in service with the NAO was reached in 1973. - 29 pieces. In 1990. all EC-135 were removed from the constant combat duty in the air. Finally, the aircraft were withdrawn from combat duty on the ground and with weapons in 1998. and replaced by U.S. Navy aircraft E-6B Mercury, which serve as air manual for all U.S. strategic nuclear forces (including SSBN).

    After removal in 2002 and 2005. alerting all ICBMs "Peacekeeper" ICBMs "Minuteman-3" is the only part of the American ICBM national SNF. Development and formulation of the new generation ICBM weapons - it is very distant future. After a thorough analysis, it was decided to initiate more programs for modernization of ICBMs "Minuteman-3", the implementation of which would preserve the missile weapon system as far originally scheduled 2020. Наиболеезаметнымипрограммамиявляются: "Safety Enhanced Reentry Vehicle" (SERV) and "Propulsion System Rocket Engine Life Extension" (PSRELE). The purpose of the first, which began in 2005., Is the introduction of the combat equipment LGM-30G BB Mk21 with deactivated ICBMs "Peacekeeper" provided one deployment BB rocket. This will increase the combat effectiveness of the LGM-30G due to features of the new BB (high resistance to PFYAV, less noticeable in various regions of the electromagnetic wavelength range, higher accuracy, a large number of options to undermine, higher reliability and safety during storage and transport). SERV program is planned to finish in 2009. The program is designed to extend PSRELE durability, reliability and maintainability propulsion system of breeding. Complete this program is planned for 2010. All of these, as previously implemented, the modernization program will allow, according to U.S. experts, save the combat effectiveness of ICBMs at least until the 2020s, when the time comes to implement new modernization programs, which, in turn, will help preserve the MDBs on duty to "2040. and Beyond "(estimate for 2007 U.S. Air Force.). After 2020. will be upgraded, especially the control system (the so-called. "Increment I"). Then undergo modernization boosters, combat equipment, breeding stage, etc.

    second half of this decade was marked by further reducing the number of deployed U.S. ICBMs. In 2006. U.S. Department of Defense called cut since 2007., The number of deployed ICBMs from 500 to 450. Reduction has become a victim of the 564 Missile Squadron (Malmstrom Air Force Base) - the only preserved by the time the squadron ground-based WS-133B. The process of removing the missiles from combat duty and their extraction from the mine began in July 2007 and ended in August 2008. As is the case with the IDB DBK "Peacekeeper", silos OS and KP is not destroyed, and put on a long-term preservation. Thus, in August 2008 the number of U.S. ICBMs decreased to 450 units deployed equally into three Air Force bases: Malmstrom (341st Missile Wing), Minot (91st Missile Wing), FE Warren (90th Missile Wing). Further reductions in the coming years is planned. Decommissioned missiles impounded and will serve to combat training and test launches. Despite the official recognition of the full success of all implemented and ongoing modernization programs in the media, there were reports that one of the results of fuel substitution in solid propellant rocket was some decrease in the firing range (this was a consequence of the development and implementation of the so-called. "Environmentally friendly fuel" , that is, environmentally friendly fuels) and, despite the replacement management systems to achieve the planned shooting accuracy and failed. However, even if these reports are true, the whole ICBM "Minuteman-3" is one of the most advanced ICBM in its class and holds the absolute world record for "longevity", while on duty already nearly 40 years.

    Description

    Minuterman-3 (before upgrading)

    intercontinental ballistic missile lgm-30g minuteman-3 The first stage of the missile LGM-30F (see the general scheme) consists of a solid propellant sustainer Thiokol M55A-1 and the tail section. The motor housing of the first stage was made of heat-treated forged steel sheets. Used special steel grade D6AC. Skirt missiles, adapters and control section had a steel frame and aluminum trim. SIDES first stage rocket "Minuteman-3 'consists of two sections, obtained by successive rolling of a steel billet extruded. This technique reduces the cost of steel, reduced engine weight and increased strength due to lack of welds. The whole block missiles sputtering method was applied thermal barrier coating Avcoat, composed of the epoxy resin and polyamide hardener. After the implementation of the housing program PRP applied a new, better coverage Vamac. At the bottom are four divergent nozzle, providing thrust vector control when working on solid propellant rocket boost phase. Composite propellant charge (brand TP-H1011/TP-H1043) attached to the body.

    The second stage consists of a main engine Aerojet General SR19-AJ-1 (see photo) and the connection compartment. Housing RDTT made from a titanium alloy 6AL-4V. Application of fuel ANB-3066 based on polybutadiene possible to obtain a higher specific impulse. Since the rocket engine had only one fixed nozzle, developers had to use new ways to create control efforts during his tenure. Thrust vector control on flight phase of the second stage in pitch and yaw was carried out by injection of liquid refrigerant in the supercritical part of the nozzle through four groups of holes arranged in planes stabilization rocket. For roll control used freestanding gas generator system with four fixed control nozzles attached to the nozzle block.

    third stage solid propellant includes CSD / UTC SR73-AJ/TC-1 (type of solid fuel - ANB-3066 TYPE 1), transition, and coupling sections. Third stage motor (see photo) has a body made of fiberglass S-901 with a high specific heat resistance. Motor sizes are increased compared to the previous engine of the third stage rocket options "Minuteman". Solid propellant has a bonded solid charge, fuel increased by 900 kg at the same time the engine is running. As a result, the engine thrust increased significantly. With the increase in fuel flow rate with restrictions on diameter and length of stage because of the desire to keep the rocket launch "Minuteman-3" old mine in the propulsion system provides one nozzle rigidly fixed and partially recessed into the combustion chamber. When working on the remote control pitch and yaw performed by injecting liquid refrigerant into the supersonic part of the nozzle, and roll - with the help of autonomous gasifier system installed on the skirt body. The front part of the housing of the third stage, there are six holes thrust nozzle shutoff. In ICBM "Minuteman-3" after the engines second and third stages respectively produced reset tail sections of these stages. Mass tail section of the second stage is about 100 kg. Reset tail sections performed using detonating cord. Simultaneously with the erosion of the detonating cord and the sizing scatter leaflets adapters in hand to avoid their collisions with the engine nozzle.

    Structurally

    MIRV ICBM "Minuteman-3" consists of fighting compartment, control systems and breeding stage (see diagram). In addition, the complex is set decoys (with two blocks release), which uses the chaff. Weight of the warhead with a fairing - 1150 kg (with BB Mk12A). Fairing originally had ogive shape, then trikonicheskuyu and was made of a titanium alloy. Housing warheads double layer: outer layer - thermal barrier coating (carbon-phenolic ablative material also reduces the EPR BB), the inner - power envelope. Upstairs establishes a special carbon-carbon tip. Power W-62 warhead (Mk12) - 170 kt, power W-78 warhead (Mk12A) - 335 kt warhead power W-87-0 (Mk21) - 300 ct. Breeding time is about 3 minutes BB. After separation of the last block of the system is triggered liquidation warhead shell. Its fragments are additional decoys for enemy radar defense system. Currently deployed ICBMs LGM-30G are 1-2 BB. In the early 70s SAC Air Force program has been initiated "Exoatmospheric Decoy Program" create light inflatable decoys new generation "Inflatable Exoatmospheric Object", which would be indistinguishable from BB on all the main features for a selecting exoatmospheric, transitional and specific part of the atmospheric portion of the descending branch trajectory BB ICBMs. Easy decoy balloon (see photo), which imitates BB Mk12, was created L'Garde corporation under the supervision of "Lincoln Laboratory" (Massachusetts Institute of Technology). The aim has been tested in launches using decommissioned ICBM "Atlas-F" in 1973-1974. As payload, except as indicated decoys, and BB were established calibration spheres of various sizes and weights. The test results were declared satisfactory, but the placement of such LC load comprising ICBMs would reduce the combat effectiveness of ICBMs by reducing the number of cash as part of BB MIRV, so the use of LC for ICBM "Minuteman-3" was abandoned. < / p> At the head of

    installed standalone inertial control system that provides flight control and breeding MIRV warheads (see diagram). The rocket was originally installed lightweight inertial guidance system NS-20A company "Rockwell Autonetics Electronics Systems". It is designed to:

    Mission Control at the boost phase;

    calculation of trajectory parameters in accordance with the memory unit ODCC three-channel D-37D flight plan;

    calculation commands to drive the actuators missiles;

    control breeding program warheads hover on their individual goals;

    self-monitoring and control of the onboard and ground systems in the process of alerting and prelaunch.

    electronic part management system NS-20A assembled on semiconductor chips and MICROMODULES. Total system contains 3000 chips 25 of different types. Equipment housed in 37 removable blocks each in a separate container (105045 mm) of magnesium alloy. The main part of the apparatus is placed in a sealed instrument compartment. Gyro unit gyro-stabilized platform with combat duty are in the untwisted state. Generated heat is removed thermostatic system. Designed and applied a new adapter between the guidance system and the nose-cone, manufactured from beryllium. Adapter weighs 7.5 kg, and a cylinder diameter of 0.8 m and height 0.28 m

    The program GRP replaced management system NS-20A to the new SU NS-50A. Inertial control system NS-50A with a gyro-stabilized platform AIRS ("Advanced Inertial Reference Sphere") and ODCC LC5400 type "Meca" department developed "Electronics Division" corporation "Northrop" (swallowed company "Rockwell Autonetics"). High quality fixtures ISU NS-50A, accounting errors and the use of new algorithms provided high accuracy. To create the required temperature of the flight control system is cooled by Freon. Electronics rocket performed on radiation-semiconductor electronics RAM-type.

    Rockets "Minuteman-3" are placed in silos (silos OS) in a 30-second launch readiness. Home made directly from the mine after the ramp-up of the first stage solid propellant. Removing silos of a station is from 8 to 24 km. Each post has a telephone and teletype (mezhpozitsionnuyu communication system through high resistance HICS - Hardened Intersite Cable System, and apply for a missile launch), low frequency, high frequency, ultrahigh-frequency (satellite) and other communication with the headquarters of the U.S. strategic nuclear forces and, moreover, linked other posts squadron that provides the ability to run any missile squadron two posts of the five positions of the squadron. To launch missiles requires concerted action of four operators of the two posts. For the posts of WS-133B (prime contractor communication system "Sylvania"; for WS-133A - "Boeing") has been provided, in addition to HICS, transmission system commands on the silo in the mid-range radio waves (for reviews of the crews, the system was extremely susceptible to interference). HICS system for posts WS-133B has been simplified.

    Martial positions have power from the local power plants, and for emergency cases provided diesel generators at each mine (75 kW) and a control station (100-150 kW), is automatically enabled. Fighting stance position area serviced central repair facilities, having contact with all control stations. Repair facility that has spare parts for missiles and ground equipment and a variety of vehicles from transporters and trucks to airplanes and helicopters.

    missile silo has a depth of 26-27 m and a diameter of about 4 meters of shafts made of reinforced concrete sections. Closed silos reinforced concrete slab that opened with the help of hydraulic drives (in a critical situation - using piroprivodov). Between the casing and the borehole wall rocket shaft has sufficient space to exit exhaust temperature reaches 2700 ° C. In the upper part of the shaft has sprung room for starting and testing equipment. Outer diameter of the premises is 9 m, height - 9.7 m in the mine is held in amortization rocket ring, which is connected to the mine shaft walls. Security silos up to 140 kg/cm2. Each mine is equipped with multiple redundant alarm system and surveillance.

    Control points are placed below ground 12,2-30,5 m in steel chambers, lined with concrete, steel wall thickness of not less than 6.35 mm and the concrete lining - not less than 1.2 m on each subsequent system (WS-133A Block 0> WS-133A Block 1 (see diagram)> WS-133B) the degree of penetration for KP and KP assurance systems and silos increased, used additional methods of protection of main and auxiliary structures (diversion of underground additional embedment, encapsulation, etc.). KP system WS-133B were significantly more spacious and comfortable, with the crews that have earned the nickname of Cadillac.

    In the years 1970-1978

    standard ICBM combat crew KP "Minuteman-3" consisted of three people:

    MCCC - Missile Combat Crew Commander - командирбоевогоракетногоэкипажа;

    AMCCC - Alternate Missile Combat Crew Commander - запасныйкомандирбоевогоракетногоэкипажа;

    DMCCC - Deputy Missile Combat Crew Commander - помощниккомандирабоевогоракетногоэкипажа.

    Since 1979, crews consist of only two people - MCCC and DMCCC. Missiles delivered to combat positions in shipping containers. Previously, these containers are made of aluminum alloy (cover and stringers of magnetic alloy), covered on the inside of the foam insulation, which were applied two layers of polyester resin, and between them laying fiberglass. In the container temperature is maintained at 18-36 ° C (at ambient temperatures from -34 to +46 ° C) and relative humidity not more than 57%. The container was placed on the conveyor-lift, consisting of five-axle tractor and a three-axle trailer. A tractor in front of a hydraulic actuator, whereby when mounted in a missile silo container rises to a vertical position. Missiles could also be transported by planes. In implementing the program Rivet MILE transporters lifts, like a number of other machines and devices have been replaced by new ones. The five-axle tractor remained, became a four-trailer (see photo).

    PERFORMANCE

    firing range, km

    11300-13000

    number of steps

    4

    Missile length

    18.2

    Starting weight, kg

    35400

    circular deviation km

    0.18-0.28 (depending on the species and the ISU BB)

    Power

    BB Mm

    0.17-0.335 (depending on model BB)

    weight warheads, t

    1.15

    first stage:
    - Length, m
    - Diameter, m
    - Curb weight steps kg
    - Engine
    - Thrust, kgf
    - Fuel Weight, kg
    - The number of nozzles


    7.29
    1.68
    23210
    SRBs Thiokol M55A-1
    90780
    20690
    4

    Second stage:
    - Length, m
    - Diameter, m
    - Curb weight steps kg
    - Engine
    - Thrust, kgf
    - Fuel Weight, kg
    - The number of nozzles


    4.22
    1.3
    7280
    SRBs Aerojet General SR19-AJ-1
    27500
    6200
    1

    Third stage:
    - Length, m
    - Diameter, m
    - Curb weight steps kg
    - Engine
    - Thrust, kgf
    - Fuel Weight, kg
    - The number of nozzles


    1.68
    1.3
    3300
    SRBs CSD / UTC SR73-AJ/TC-1
    15600
    2800
    1

    breeding stage:
    - Diameter, m
    - Engine
    - Thrust, kgf
    - The number of nozzles


    1.3
    LRE Rocketdyne RS-14
    252
    11





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