Tank Object 187

Work on the tank "Object 187" conducted Ural Transport Machine-Building Design Bureau in the development work "Improvement of T-72B." "Improving the T-72B" asked by the Council of Ministers on 19.07.1986, the work on the project was 187 along with work on "Object 188" — the future of the T-90 (with a little ahead of the latter) to the mid-1990s. In contrast, the object 188, it was fully active development design office. Then Ural KB could allow themselves to such "freedom", of course with an emphasis on financial support from Uralvagonzavod as a potential serial producer. Both cars'Object 187 "and" Object 188 "were forthcoming evolution of tank T-72. But while working on the subject of 187 as opposed to 188, the design team, led by Vladimir Potkin, laid in the design of the tank over the deepest configuration in comparison with the initial design of the T-72B. Managing a particular work on the tank — deputy. head designer KB Shchelgachev AS Constructive solution is to abandon imposed in the late 1960s Tagil Design Bureau "revolutionary" case design of the T-64. Assembling endured a small decompression. This has a positive impact on ergonomics and protection of upper front body parts. Due to elongation bow workplace mechanical driver remains in the depth of the machine body, as a result of observation devices shaft out through the roof of the housing outwardly and not through the upper frontal piece as T-64 and its "successors". So makarom eliminated the unfortunate weakened, "neck" in the middle of the frontal part. This decision gave an opportunity to place a reservation with more optimal angles for countering modern armor-piercing projectiles.

Tank "Object 187"

Tank "Object 187"
3D-model of experimental tank "to 187" (a sketch taken from http://tank-t-90.ru)

The tanks installed tower newest design — the usual cast construction of the tower was replaced by a welded, which was used for the sheet metal of medium hardness. Their design and manufacture of such towers together developed the Institute of Steel and UralVagonZavod UKBTM. In fact, at the same time, work was conducted to establish a welded towers UKBTM (objects 187 and 188) and HKBT (T-80UD). The Tower of the object 187 has the greatest size, particularly in the aft. In the development of these towers and their great contribution to the protection he brought N. Kondratyev

"Iron" armor of the tank was complemented by a new set of dynamic protection — a prototype of a modern complex of the universal dynamic protection "Relic". According to data of a certain complex asset protection 187 gave the title of "Malachite". The protection circuit is supplemented latticed screens, and complex electro-optical oppression "blind" with OTSHU and launchers system 902A.

The main armament of the tank — 125-mm smoothbore gun 2A66 (D-91T) overstated ballistics. Cannon developed in Sverdlovsk in the famous Peter's Artillery Design Bureau "Plant number 9." Coupled with the new weapon was being developed armor-piercing projectiles 3BM-39 code ROC "anchor." Elongation was more than 20. 3BM-39 was a uranium OBPS-piece, having a new detachable pallet. VU This consisted of a caliber projectile and sabot light composite coils. * Cross-section of the last-arranged. With all of this tail was made of light alloys; swing — less than the caliber of the times. Shot was developed in them. The main tests of the new guns and were shot at the site NTIMT. Outside the presence of different brand new gun muzzle brake. Muzzle Brake had single-chamber design with reduced efficiency. Brake served more to remove a strip of sight missiles gases, and not to remove the impact of efforts. In use by some swatches installed an upgraded gun 2A46M (D-81TM).

Tank "Object 187"
Lateral projection of the most experienced tank "to 187" with a gun 2A66 (sketch taken from http://tank-t-90.ru)

At the time of development tank "Object 187" equipped with the most advanced fire control system — in tanks of possible enemies something similar only beginning to emerge in the late 1990s. The system was implemented on the basis of pieces 1A45. Awards for adaptation to complex objects 187 and 188 belong Neugebauer N. and Bystritsky VM One of the innovations is the first time introduced in the Russian tank building, was the introduction of electrical circuits in the control micro-connector. This greatly reduced the weight and volume of cable routes. This award also belongs to Neugebauer.

At the most experienced swatches machines tested several types of transmissions and power plants, including gas turbine engine. During the tests, the most promising power plant was found X-shaped candy bar A-85-2 (1200 hp). Because of the engine in the engine-transmission unit moved along the longitudinal scheme (as engine B-2 on the T-34). In addition, a similar arrangement with a simplified docking motor Gopom. Exhaust pipes object 187 with X-obraznikom initially placed at the board, in the upcoming release brought the stern on fender along the boards. Work on the engine-transmission compartment object 187 were Babylon Kuraksa, Harley Smith. The machine used the latest running gear with parallel rubber-metal joint and iron treadmill. Track objects 187 and 188 different shape and placement of lugs — if one line at the level of thoughts circle lugs, it is oval (rectangle and trapezoid T-80/-90 BMPT). Crest — a continuous ("skoboobrazny" on T-80/-90). Track links — cast with the following machining, which is more technologically advanced and cost-effective in comparison with the forging of links T-64/-80/-90 tanks. Hydraulic blade of early spring in the swatches were set at 1 and 6 rollers, and swatches number 5 and number 6 in addition to the 2 mini. Much to increment the dynamic course of rollers.

Machines built 3 groups in pairs. Any of the preceding series differed significantly and clearly shows the evolution of the type and direction of mining units, assemblies, devices, and systems. Machines inside each series also had minor differences.

Seasoned standards of number 1 and number 2 was closer to the ranks of the coming of the T-90 (excluding housing). On the swatch number 1 as the power plant was used Chelyabinsk modified V-shaped diesel engine V-84MS (power 840 hp). The following given this power plant is almost completely "migrated" to the object 188. The standard number 1 after the test cycle was dismantling and Troubleshooting. Then his body was used for making the reference number 3. Number 2 equipped with a V-shaped 1,000-horsepower diesel engine with turbo CD-34 developed in Barnaul.
The car in this kind was held in Turkmenistan, a large series of sea trials be successfully withstand dusty air and the higher the temperature. After returning to Nizhny Tagil, machine retrofit, after that it was shot at the site NTIMT. The effects of modern antitank weapons were outstanding level of protection. Then he shot a standard machine disposed of.

Tank "Object 187"
The experimental X-type diesel engine with turbo A-85-2 (photo by Alexey Hlopotova, http://otvaga2004.narod.ru)

At the beginning experienced model Number 3 was intended for the various "barbarian" tests, which have been associated with the possibility of failure and therefore never been fully staffed. In contrast to the first 2-sample had a traditional cast turret on the swatch number 3 was installed tower newest design made of rolled 40-mm armor plates are connected among themselves by means of welding. Tower geometrically very reminiscent of the standard modern welded turret T-90S/-90SA/-90A actually on the design of which they conduct their "pedigree". Significant differences between the outer towers of the towers welded T-90 is a form of cutting the armor plates and welds, round hatch release pallets (on the T-90 round), the presence in the rear part of the roof of the tower on the left "tower" a filtering unit (HLF on the T-72 and T 90 is placed in the body). On the swatches from 1 to 3 housing produced by traditional Russian tank circuit, but his nose was lengthened, and the upper front part given a greater angle of inclination. With all this space the driver was pushed back into the cabinet depth. Three observation devices were mounted in the cover flap. Specifically, these activities and have allowed to get rid of a weakened area in the central upper part of the upper frontal body parts T-64/-72/-80. On the swatch number 3 as the experience of native cut the engine-transmission unit with the CD-34 and established branch of T-80U with a CCD-1250. Apart from this support roller for 5 additional set Hydraulic shock absorber. As such, the tank in Nizhny Tagil has passed tests on a board and then skated in Kubinka armored vehicles at the site. The same reference number 3 was in Arzamas in the nuclear center-encompassing tests anti-nuclear defense. Setting the standard for number 3 turbine was quickly coerced by step and try to survive in the current political situation of the time. Designers have two objectives. In-1's, they tried to kick at the "turbine" lobby cards. Show that Tagil also has almost finished with the car is popular then the gas turbine engine. Thus, machine, more structurally perfect, perfect in all things, except that apart from the engine compartment and its control system that were similar to the T-80U (Omsk were made by the design documentation transmitted officially). In-2, to show the fans a gas turbine power plant advantages of new diesel engines over-capacity, because not only tests, and theoretical calculations showed a loss of turbine power plant in many ways.

The case reference number 4 was the same as the body reference number 3 until it redrew in "turbinnik." Changed the shape and design of welded turret, increased its size in the aft and amidships. I test fire weather sensors mounted in the turret, the outside is very different from the usual TWO T-90. The basis of the power plant in Chelyabinsk was the new 1200-strong X-shaped engine A-85-2. Fan cooling system common to Nizhny Tagil designs had two centrifugal fans which have been shifted from the aft to the right and to the left. The exhaust pipes were located at the board (unfolded along the fender, gases are down in the stern). With all this contributed greatly elongated tract significant cooling of the exhaust gases and fine dissipate heat, the thermal visibility was reduced to the level of general background. Compared to the number 3 position changed APU on the right fender. Has also been modified chassis — sloth with "windows" changed "solid" — without cut-outs and holes. The complex dynamic protection "Contact-V», available on the swatches № № 1-3 replaced the brand new design. Knock-panel reactive armor on the top front part of the powerful were made of titanium plates. Then, during the transfer of the machine to Kubinka in 38 NIII Defense panel data to prevent "accidental" loss changed the 30-mm iron sheet having milled grooves that mimic the real missing panel. This ersatz design was attached to the upper front body parts with 4 bolts.

Tank "Object 187"
2A66 cannon and wind sensor at the pilot "project 187" Kubinka (http://photofile.ru/users/ochumelki.fotoplenka)
Tank "Object 187"
One of the samples experienced tank "to 187" with a gun 2A66 Kubinka (http://photofile.ru/users/ochumelki.fotoplenka)

5 and 6 standards endured the most experienced significant changes, becoming more sophisticated machines of this type. Increased size and changed shape bow of the hull. If the noses of early models of the object 187 and T-72 looked like a chisel, the swatches on the last 2-acquired swatches nose shape is more reminiscent of a chisel. Length of the "naked" body (without fenders) was equal to 7.2 meters, width — 2,17 m. Vision devices with a flap of the driver moved to the side of the tower for him. Welded tower rose again in size. Overall width was 3.12 meters. Very seriously the protection of on-board increment projections tower. Towers 5 and 6 samples differed very wide stern — the widest of all welded towers, which were designed in the Soviet Union. As of 4 swatch on these machines set a new set of dynamic protection, but unlike her 5 and 6 standards experienced expelling panels were not titanium, and made of steel armor. Apart from this redesigned containers DZ installed on the cheeks of the tower and in the frontal part. When the "Contact-V» active elements established through narrow caps at the ends of blocks, in this case, the entire top surface of the block — a big removable cover. By unscrewing the 4 screws out good access to install / substitution of parts at the top and bottom of the unit. Aft of the tower screened dural boxes of spares impressive size. Aft and side projections of the body is shielded by a latticed screens, made of 4 millimeter armor plate of Technology Institute of Steel. Lattice screens were installed on top of the usual rubber-screen. Taking into account that the installation screens are not enforced w / a marker, for transport of their supposed completely dismantled. Both standard equipped with X-shaped A-85-2, but different type of carton. 5 had a classic reference manual gearbox, while 6 standard already had the GOP.
A large area radiators for efficient cooling sought greater volume of air passes. To do this, at the urging of Kuraksy OA four windows above the radiator grilles (as in the swatch number 4) connected to two larger. To save weight and provide a movement input OPVT vast arrays cover the cooling system is not fabricated from a metal as T-72/-90 and rubberized fabrics. On the swatch number 5 because of the differences in the transmission of the left lattice window was not strictly rectangular shape, and received a cut to the fuel cap (it is, for sure, the only external difference between these standards). In his own final form these machines have another difference: the number 5 rollers mounted a "new" type, which is similar to a form of vyshtampovki rollers 2nd most experienced BMPT reference (object 199K), but in the process of testing and operation of a set of rollers can vary. 5 and 6 standards on the side just as identified on the form of boxes with units of the APU on the right fender in the rear part of it — as opposed to the standard 3 and 4 are beveled at the stern (4 swatch bevel working on 3 swatch box with APU has a rectangular shape).

Ural Design Bureau has taken a lot of effort in trying to put this amazing car for service. But despite successful tests, apparently the highest technical and military capabilities tank was not accepted by the Ministry of Defence for service. Instead of customers from the Defense Ministry has once again given preference half-measures and focus on their work on the final design of the object 188, which is a symbiosis of the body T-72B and the object of the system 187. Once again, a very promising and actually ready for series machine gave way to more than a cheap and ordinary.

Tank "Object 187"

Tank "Object 187"
One of the samples experienced tank "to 187" Kubinka (2006-2008, http://photofile.ru/users/ochumelki.fotoplenka)

At the current time there are four machines: seasoned benchmarks number number 3 — 6. They are all at the disposal of the Cuban Ministry of Defence 38 NIII Russian Federation and is a very sad sight. Machinery dismantled, metallolomschiki kidnapped dural boxes of spares, with "turbinnika" — titanium roof of the engine compartment! At the request of the museum Uralvagonzavod the transfer of the 1st tank to 187 for restoration and display at the museum complex plant GABTU whenever a refusal, citing privacy. But according to some reports in the current time Kubinka plans to repair the machine next open demonstration.

By the above, it may be worthwhile to add that on the idea of Vladimir Ivanovich Potkin — Head Designer, the object was 187 should serve as a basis for the design and development of a family of combat vehicles outside the military complex, also in the design of promising, committed and more than massive tanks.

Adapted from: http://otvaga2004.ru

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