biology

Vladimir Dzhanibekov

Vladimir Dzhanibekov is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Vladimir Dzhanibekov rather than just read about it. In short: Vladimir Aleksandrovich Dzhanibekov (Russian: Владимир Александрович Джанибеков, born 13 May 1942) is a retired Soviet Air Force Major General and a cosmonaut veteran of five orbital missions. Notably he was part of the Salyut-7 rescue mission and also discovered the Dzhanibekov Effect on that same mission, a logical consequence of the Tennis racket theorem.

Key takeaways

Vladimir Dzhanibekov belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Vladimir Dzhanibekov to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Vladimir Dzhanibekov from memory before moving on to harder problems.

Reference excerpt

Vladimir Aleksandrovich Dzhanibekov (Russian: Владимир Александрович Джанибеков, born 13 May 1942) is a retired Soviet Air Force Major General and a cosmonaut veteran of five orbital missions. Notably he was part of the Salyut-7 rescue mission and also discovered the Dzhanibekov Effect on that same mission, a logical consequence of the Tennis racket theorem.

Biography Dzhanibekov was born Vladimir Aleksandrovich Krysin (Russian: Владимир Александрович Крысин) in the remote area of Iskandar in what was then Bostanliq District, South Kazakhstan Region, Kazakh SSR (since 1956 – Tashkent Region, Uzbekistan) on 13 May 1942. His family moved to Tashkent soon after his birth. In 1964 he married Liliya Munirovna Dzhanibekova, who was a descendant of Janibeg, medieval ruler of the Golden Horde. As her father had no sons, Dzhanibekov took his wife's family name in order to honour her ancestry and continue her line of descent, an unusual step for a husband in the Soviet Union. In 1960 he entered Leningrad University to study physics, where he became involved in flying, something in which he had always been interested. In 1961 he decided to enroll in the V. M. Komarov Higher Military Flying School at Yeisk while simultaneously completing his degree in physics at the Taganrog campus of Rostov State University. Four years later he graduated and became a flying instructor in the Soviet Air Forces serving at military training unit number 99735 in Taganrog in 1968–1970. During the 1970 visit of Gherman Titov to the Taganrog-based Air Forces training unit he was selected into the cosmonaut training pool Air Force Group 5. He joined the Communist Party the same year. Dzhanibekov served on five space missions: Soyuz 27/Soyuz 26 (launch/return), Soyuz 39, Soyuz T-6, Soyuz T-12, and Soyuz T-13. He accrued 145 days, 15 hours, and 56 minutes in space over these five missions. He had also performed two EVAs with the total time of 8 hours and 35 minutes. In 1985 he demonstrated stable and unstable rotation of a T-handle nut from the orbit, subsequently named the Dzhanibekov effect. The effect had been long known from the tennis racket theorem, which says that rotation about an object's intermediate principal axis is unstable while in free fall. In 1985 he was promoted to the rank of major general. After retiring from the cosmonaut program in 1986, he became involved in politics. He was the Deputy to the Supreme Soviet of Uzbek SSR from 1985 until 1990. Also, he has taken up photography and painting, and his works, predominantly of space thematics, are owned by museums and private collectors. Starting 1990, Dzhanibekov unsuccessfully attempted to circumnavigate the globe by balloon. He partnered with Larry Newman who envisioned flying a NASA-designed sky anchor balloon. This unique hourglass shaped design used a zero pressure helium balloon for buoyancy and a superpressure balloon for variable ballast. Manufactured by Raven Industries, the double balloon system together measured 354 feet (108 m) tall. A proof of concept flight, launched from Tillamook, Oregon on 8 September 1990, was crewed by Dzhanibekov, Newman, Tim Lachenmeier, and Don Moses. Moses replaced Richard Branson, who was unable to make it by the weather window departure time. The flight lasted for continuous 31 hours, spanning two nights, before landing at Omak, Washington, and confirmed the sky anchor balloon nominal performance. Dzhanibekov, Larry Newman, and Don Moses piloted the Earthwinds Hilton balloon which was primarily sponsored by Barron Hilton. In 1992 an attempt from Akron, Ohio did not launch due to strong winds. The next attempt was a planned pre-dawn launch but was delayed for several hours by difficulties inflating both balloons. Launching later than desired, on 13 January 1993 the Earthwinds liftoff from Reno Stead Airport flew for 30 minutes before crashing. The balloon could not penetrate a strong inversion layer and tore the ballast balloon on a mountain peak. The three crewmen survived the crash without injuries. An additional flight on 31 December 1994 reached 29,000 feet (8,800 m) when the ballast balloon failed. These sky anchor balloon failures prompted other circumnavigation attempts to switch to the Roziere balloon system instead. The minor planet 3170 Dzhanibekov, discovered by Soviet astronomer Nikolai Stepanovich Chernykh in 1979, is named after him.

Honours and awards Twice Hero of the Soviet Union (1978 and 1981) Pilot-Cosmonaut of the USSR Order of Friendship (Russian Federation) Five Orders of Lenin Order of the Red Star Order "For Service to the Homeland in the Armed Forces of the USSR" 3rd class Medal "For Merit in Space Exploration" (Russian Federation) Jubilee Medal "Twenty Years of Victory in the Great Patriotic War 1941–1945" Jubilee Medal "50 Years of the Armed Forces of the USSR" Jubilee Medal "60 Years of the Armed Forces of the USSR" Jubilee Medal "50 Years of the Soviet Militia" Medals "For Impeccable Service" 1st, 2nd, and 3rd classes Kosmonavtlar metro station in Tashkent commemorates Uzbekistan's contribution to the Soviet space programme including that of Dzhanibekov Foreign awards:

Hero of the Mongolian People's Republic Commander of the Legion of Honour (France) Order of the Banner of the Hungarian People's Republic Order of Sukhbaatar (Mongolia) He is an honorary citizen of Gagarin; Kaluga (Russia); Arkalyk (Kazakhstan); Baikonur (Kazakhstan); and Houston (United States).

See also Tennis racket theorem, or Dzhanibekov effect, a theorem in dynamics involving the stability of a rotating body with different moments of inertia along each axis.

References

External links

http://english.ohmynews.com/articleview/article_view.asp?no=363760&rel_no=1 http://www.spacefacts.de/bios/cosmonauts/english/dzhanibekov_vladimir.htm http://www.zarya.info/Diaries/StationsDOS/Salyut6Ex5.php Archived 14 April 2019 at the Wayback Machine http://www.zarya.info/Diaries/StationsDOS/Salyut6Ex1.php Archived 15 August 2020 at the Wayback Machine Encyclopedia Astronautica. Dzhanibekov, Vladimir Aleksandrovich. https://web.archive.org/web/20031025104649/http://www.balloonlife.com/publications/balloon_life/9711/rtwretro9711.htm https://groups.google.com/forum/#!msg/sci.space.news/R8h4oDuW1BQ/AsL0_ERagbwJ https://www.nap.edu/catalog/10531/leaving-earth-space-stations-rival-superpowers-and-the-quest-for

Illustrations

Worked examples

Example 1 — a first encounter with Vladimir Dzhanibekov

Start with the simplest possible case. Write down what Vladimir Dzhanibekov claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Vladimir Dzhanibekov before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Vladimir Dzhanibekov ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Vladimir Dzhanibekov

In research: Vladimir Dzhanibekov appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Vladimir Dzhanibekov in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Vladimir Dzhanibekov is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1942 births, Astronaut-politicians, Commanders of the Legion of Honour, so understanding it makes those chapters shorter.
In everyday life: Look for Vladimir Dzhanibekov outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Vladimir Dzhanibekov in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Vladimir Dzhanibekov means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Vladimir Dzhanibekov out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Vladimir Dzhanibekov in simple terms?

Why does Vladimir Dzhanibekov matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Vladimir Dzhanibekov?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Vladimir Dzhanibekov.