Object 640 "Black Eagle" photos

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T-80 rubber flaps - Part 3

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Over half a year ago, I promised to write an article about T-80 rubber flaps and their purpose, which would have completed the trifecta article collection: T-80 aerodynamic features and  T-80 MBT engine air filtration and dust prevention systems . This article builds up on the T-80 aerodynamic features topic and will conclude this series.  Unfortunately, I have come across zero primary sources, that directly mention the purpose of these rubber flaps, which makes it difficult to write an article with primary sources. There are 2 disputed arguments on this topic; one argument states that the flaps on the T-80s are meant to redirect airflow and reduce air contaminants like sand and dust from entering the engine. The other argument is that these flaps are used as additional protection to prematurely detonate HEAT warheads. I will discuss this topic by only talking about the presence of the flaps on T-80s. Firstly the rubber skirt, present on the lower frontal plate of T-80s. Its ...
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"AGAVA" - "AGAVA-2" and its confusing history

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When covering Soviet sight technology there are always some interesting designs and approaches to solving an issue. It is a common fact that the Soviet Union in the 1980s-1990s was quite behind in thermal sight technology. Only in the 1990s, but to be specific in 1992, the Soviet Union now Russia started to field small batches of thermal sights on their tanks, primarily T-80Us and some of the early T-90 variants, which just recently entered service. Russia's journey through creating its own domestic thermal sight traces back to 1982.  The 1980s were quite an important time for the 'Krasnogorsk Factory named after S.A Zverev', which is still to date an Optical Engineering and Optoelectronics factory. The factory is primarily known for making domestic Soviet cameras back in the day. However, that's not the only thing that the factory has produced back then.  Close to the mid-1980s, the facility was contracted to develop new thermal sight technology for the Soviet Ministry...
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GTD-1000 - GTD-1000TF - GTD-1250 Gas Turbine Engines

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The world's first mass-produced tank gas turbine engine GTD-1000T was created at the Klimov Plant in 1968 for the T-80 main battle tank developed By the special tank design Bureau of the Kirov plant (now JSC "Spetsmash"), which was adopted by the Soviet Army in 1976. Since 1980, a modification of the GTD‑1000TF for T-80B/BV tanks was produced, since 1986 a modification of the GTD-1250 for T-80U tanks.  GTD-1250 Engines of the GTD-1250 family as part of the power plants of T-80 tanks are in service with the armies of Russia, Belarus, Cyprus, South Korea, Kazakhstan. Turbine engine GTD-1000T/GTD-1250, which have a large volume-weight  capacity and a more favourable traction characteristic compared to diesel engines, provide T-80 tanks with interesting characteristics: - higher operational readiness - easy start-up at low temperatures (up to -40°C) - better cross-country ability on soils with a low load-bearing capacity - best noise and heat-masking qualities - increased ...
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