MiG-29 Fulcrum

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Valjalo bi naci neki snimak na YT ako ima nesto ? Inace u naslovu slike stoji 2006 g a ne 2016 .Polozaj mlaznica ukazuje da desni motor jeste Maksu ( ne Mali gas ) ,levi motor tj mlaznice a vidi se dobro rasirene pod snagom forsaza .Kod punog forsaza se jos vise sire .
Dakle kod Malog gasa( rulanje ) rasirene/najveci precnik otvora kojeg vidimo na slikama uglavnom/ ,kod Maksimala -skupljanje /najmanji precnik / ,kod Min forsaza sirenje i kod PF opet sirenje /oba slucaja ka najvecem precniku / .

`Konvergentno-divergentne` mlaznice/sopla .

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Citat:Микоян-Гуревич МиГ-29УБ (9.53)
RF-90853 / 51 (синий) Россия ВВС
Петр Поляков, 9 декабря 2017
На фоне взлетающих 31-х

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Citat: tu su jednokratno uspeli da skupe pare za remont i modernizaciju s tim što nisu mogli da nađu pare da isplaćuju potpisan logistički ugovor za održavanje flote sa Rusima (taj ugovor je za Slovačku stranu bio pravno gledano KATASTROFALNO sastavljen u svom prvom izdanju) a više nije imalo šta da se "zatvori tj ugasi" u samom RV kako bi se "namakla" lova rešili su da povuku tenkove iz aktivne upotrebe i da pare predviđene za njihovo održavanje preusmere na eskadrilu sa MiG-29...

А често у западним медијима читамо како Руси не могу да испуне уговор о одржавању....Или како то не раде како треба.

Не кажем, има и тога али нису само они криви...

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Naravno, to sto su Slovaci obezbedjivali finansije po sistemu "seci usi krpi dupe" i sto su pristali da potpisu ugovor kakav ne bi potpisao student 2 godine pravno birotehnicke skole sa 3 nedelje prakse ( a ne drzava sa timom advokata i pravnika) nije niciija druga krivica do njihova....Na kraju krajeva oni su sudski i ganjali tu garnituru koja je to sve potpisivala itd...

S druge strane mislim da kod Rusa glavni problem nije da nesto ne mogu da odrade, vec sama organizacija posla i komunikacija izmedju pojedinih jedinki (kooperanata) u samom sistemu.
Tako dugi rokovi i prekoracenje ugovorenih rokova onda kod musterije prirodno stvara nervozu, podozrenje, bes itd....

Recimo Svedjani tj. SAAB su u tom segmentu izvanredni.U slucaju neke reklamcije do resenja problema u proseku (ako se ne radi o necem bas specificnom) prodje vrlo kratak vremenski rok.

Dakle daleko od toga da Rusi ne znaju ili da su najgori na svetu.Ali da na pojedinim mestima imaju dosta prostora da se poprave - imaju...

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SMT
Kursk.
12.5.2018.

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VP3987 ::Koliko dugo traje remont motora za MIG29? Prema dostupnim informacijama VS je jos u novembru prosle godine poslala desetak komada na remont i jos uvek nema nikakvih informacija da je remont zavrsen.

Sobzirom da su sa aviona iz donacije skinuti motori da bi avioni is sastava VS mogli i dalje da lete, logika kaze da avioni iz donacije nece poleteti dok se motori sa remonta ne vrate.

1995te godine je u zavodu u Kubinki ( 121 ARZ ), remontovano 10 motora za dva meseca.

kapedunum ::

Dugo sam ziveo van Srb, i bio sam na dosta nastupa uglavnom F16 i F18.
U oci mi upada jedna mala razlika u nastupima na aeromitinzima na zapadu i ovde. F16, F18, F15 uglavnom naprave 9g zaokret koji prethodno bude najavljen na razglasu.
Nikada nisam video taj "forsirani zaokret" na nekom nastupu, kod nas razumljivo zbog naleta, ali ni kod ostalih korisnika 29ke.

To nece bas da moze,tj nije tako u praksi ,pa da se malo razjasni zainteresovanim kolegama .Dakle u vezi sa nesto duzim prekoracenjem onog `9g-opt` kod 29tke :

Citat:Imate dva gipka vratila (rotora) i na jednom kraju kompresor niskog pritiska i kompresor visokog pritiska popriličnih masa. Na drugoj strani su turbina niskog pritiska i turbina visokog pritiska manjih masa no termički opterećenih radnih povrsina. Zazori između oboda gasnog trakta motora i kompresora ili turbine su mali. Uzmimo da se sve ove poprilično velike mase još vrte na nekih 11 000 i 15 000 obrtaja u minuti. I sad na to sve uvedete opterećenje `g` , gde sile težine enormno rastu na poziciji rotora kompresora niskog i visokog pritiska. To izaziva uvijanje i savijanje vratila rotora a to dovodi do toga da vrhovi (lopatice) kompresora ili turbine počinju da "grebu" o obod gasnog trakta motora. To sve prate i vibracije koje se takođe kontinualno prate i beleže. Pa imamo o tome i upozorenja.

Ukoliko se pređe ogranicenje motora po opterećenju, to može proizvesti lomove delova rotora, ležajeva motora, pa i "detonacije" motora u vazduhu.

Sad nam je jasno da lovci 4te gen itekako imaju ogranicenja po `9g -opt` tokom manevara ( tzv zaokretanja ) kako u ustaljenim tako i neustaljenim zaokretima.

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SMT.
Privolzkaja.
Ove godine.

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Hungarian Air Force: from MiG to Gripen

Citat:Col. Tibor Zsamboki was the last Commander of Dongo Squadron. He explains us that “the MiG 21 was developed and built in the 50’s, while the MiG 29 in the 80’s years. The MiG 21 never forgive any pilot’s mistake during flying. It was unable to fly at low speed or on high AoA (Angle of Attack), its radar was a joke, a real good-for-nothing instrument and the missiles also, except the R-60 Aphid. It was the first Russian-made air-to-air infrared missile which had high manoeuvrability, but after the F-16 become a standard weaponary in the NATO, the MiG 21 finally become outdated and useless pure metal. Instead, the MiG 29 is a pilot’s dream: there are no limits, you can do whatever you want, Two brutal engines, on afterburner you have a thrust/weight ratio over much more than 1, no limitation of AoA. The radar had good characteristics, the R-27 Alamo and R-73 Archer were quite good air to air missiles. The main diadvantage of MiG 29 was a “short leg”: with full fuel tank you could burn all petrol less than 20 minutes. Another disadvantage was the avionic and the lack of a modern and capable weapon-system computer. The radar had a great performance by distance and angle of view, but there wasn’t an appropriate weapon-system computer which was able to transform the signs in evaluable information for the pilot! That’s why all Russian aircraft were heavily GCI (Ground Controller Interceptor)- dependent.”

The main role of MiG 29 was air defence. Did you use it even for ground attack and what kind of weapon did you use? “Yes, we did. We could put under the wings bombs, 50-100-250 and 500Kg, not giuded rockets S-5 in block UB-16 and UB-32, the bigger S-8 rockets in the B-8M pods and S-24 heavy unguided rockets. The accuracy of target’s destroying was horrible, due to the lack of ground-targeting system. The only thing which was able to improve the accuracy was the laser range finder. Finding and identification of targets made by pilot, using his sense-system (eyes). The most accurate weapon was the GS-30-1 gun with 150 pieces 30mm bulets, we could hit any track-size target in the range.”

During Yugoslavian wars, in 1993 and 1999, did you have real scramble? “In the first Yugoslavian war we had kept a strengthened air policing duty in all 3 fighter Wings, putting some radar squadrons closer to the border and keeping Mi-24 in combat patrol at the south border of Hungary. We had few “Alpha” scramble orders almost every day against Ygoslavian jets. Their tactic was to fly straight into the border to provocate us; our duty at Veszprèm (Command and Reporting Centre) at the proper distance had alerted the closest QRA and sent the fighters to the estimated meeting point-but it happened-I mean the a “meeting”- just once and it was a young Serbian pilot who has got lost. So normally we made a CAP at the border until we got fuel.”

After the end of alleance with Soviet Union, how did you get spare parts? “After the dismissing of Warsaw Pact the supply of spare parts was a little bit difficult and it remained till the end. We sent our former Air Force Chief,a tri-stars General, to Moscow as national representative to the MiG-MAPO to arrange the acquisitions but even this way become incapable. The Hungarian system for buying spare parts also was bureaucratic-so, this behaviour from both sides caused the result at the end, namely remaining only four birds in service.”

http://en.aviation-report.com/hungarian-air-force-from-mig-to-gripen/

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29A (9.12A).

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Tesko da je to Izdelie 9-12A jer ima antenu `Pion-NM` sistema RSBN ispod radarskog konusa a to su imali avioni prvih serija 9-12.Sad zamislimo koliko je star taj avion na slici ,barem 35 godina .