SAAB JAS-39 Gripen

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SAAB JAS-39 Gripen

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Gripen production line established in Brazil
Arrow http://www.janes.com/article/79986/gripen-production-line-established-in-brazil



Registruj se da bi učestvovao u diskusiji. Registrovanim korisnicima se NE prikazuju reklame unutar poruka.
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Imamo i ponekog Gripena Wink
Slike od 16 i 17 aprila ove godine Smile







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http://www.aereo.jor.br/2018/05/16/seminario-da-sa.....do-gripen/

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  • dakota  Male
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gavrilon ::Dosta interesantno predavanje/ debata na temu "Fizika u Gripenu".Pilot - major ceskog RV sa 2300h naleta u karijeri (posle diplomranja 1998. leteo je na MiG-21 do 2005 a kompletnu preobuku na Gripena je zavrsio 2006. godine, tokom sezone 2014. je bio i "demo" pilot za Gripena) je uzeo ucesce na seminaru fizicara (profesora fizike) i odgovarao na neka njihova pitanja.

Mogu reci da su profesori postavili dosta interesantnih pitanja (cak i onih koja nisu direktno vezana za fiziku)...

Par stvari koji su meni bile najinteresantnije.
Upitan za razliku prilikom manevrisanja na nadzvucnim brzinama, pilot je odgovorio da je MiG-21 trebalo 10 km da "napravi krug" na nadzvucnoj brzini dok Gripenu sada treba manje od 1 kilometra...

Zatim katapultiranje na nadzvucnim brzinama...Prema njegovim recma Svedjani su isli tj. testirali do 1.8 maha (sa lutkama naravno) i dobili rezultate da covek i pri toj brzini moze da prezivi iskakanje iz Gripena.

Vrlo lepo je i objasnio zasto Gripen ne koristi kocioni padobran (tu ulogu umesto padobrana odradjuju kanari) ili kontra-potisak kao njegov prethodnk Vigen.

Na neku pitanja je rekao da "ne moze" da odgovori (najkrace vreme za koje Gripen moze da poleti ili kakvu opremu i uredjaje koriste da izbegne rakete jedinica PVO)...
Otkrio je naprimer da je meteo-minimum za Gripena 60 metara donja baza oblacnosti i 800 metara vidljivost.

Na pitanje o komandama "Fly by wire" odgovorio je da njemu trebalo oko 200-250h naleta da stekne potpuni osecaj i sazivi se sa avionom sa takvim komandama gde nema "feedbacka" na samoj palici kao na MiG-21 ali da takav sistem komandi dosta olaksava pilotu.

Pitanje o Gripenu travi i auto-putevima...Gripen se pre svega zbog koriscenih kompozitnih materijala ne koristi travnate PSS.Koriscenje auto-puteva je moguce.Tu je pomenuo takav veoma rasiren sistem u Svedskoj ali i rekao da on ne moze da zamisli da se to izvede u Ceskoj tj. kako bi javnost reagovala ako bi se auto-put zatvorio na neko vreme zbog vezbe RV-a.Napomenuo je da je to koliko je njemu poznato radjeno samo jednom u Cehoslovackoj (taj video sam ja vec postavljao ovde) i da ta 2 dela autoputa, koja je on par puta prosao na svojim putovanjima do Brna tesko da bi danas mogla odgovriti potrebama Gripena...




Procitah ovaj tekst pa sam u cudu jer niko nije reagovao od citalaca. Neko ko je iskreno zainteresovan za vazduhoplovstvo i u ovom slucaju za ovaj pomislice da su neki navodi zaista istiniti.

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Saab bullish on Gripen sales prospects

https://www.flightglobal.com/news/articles/saab-bu.....ts-448693/

Gripen E ready for weapons carriage trials

https://www.flightglobal.com/news/articles/gripen-.....ls-448691/

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Citat:In 2001 Hungary began the deal with SAAB for the leasing of 14 JAS 39C/D Gripens, and the first delivery arrived in 2006.

This led even to a re-organization of the path of pilots from the Academy till the Unit. In 2001 Hungarian Air Force signed a contract with Canada for the training of new pilots till 2019. This program is structured in a first part, where pilots begin the basic flight with T-6, and the best cadet of the course pass to next step that consists of learning the military aspects of flight on the Hawk. The other cadets of the first step will be assigned to transport aircraft or to helicopter units.

After around 100 hours on the Hawk, the pilot completes his conversion training in Sweden, flying the Gripen for three months, and later he will be assigned to Puma Squadron in Kecskemèt. The main role of Hungarian Gripens is the air defence, and the pilots are always under training to be ready for the QRA. A secondary role is air-to-ground attack, in particular CAS (Close Air Support).

In the air-to-air role the Hungarian Gripen, such as the Czech, are armed with AIM 9 Sidewinder and AIM 120 Amraam missiles, unlike the Swedish Gripen, who are not in the NATO and they use only their own weapons. In the air-to-ground role, the employment of the Litening III pod, led to goals that should have been difficult to achieve in the past with the MiG aircraft

Since Hungary ishas been a NATO member, its air force has to follow NATO operational rules, so they have to be combat ready not only in air-to-air but even in air-to-ground roles.

As Brig. Gen. Csaba Ugrik, base Commander, explains :“the introduction of the Gripen in Hungarian Air Force led to a radical change in our menthality and tactics. The Gripen is a multirole aircraft, with advanced avionics, it is easier to fly than the MiG. In addition with the SAAB aircraft we can perform different types of mission, just switching the radar mode we can face different tasks, and thanks to systems such as Link 16 we can co-operate with our NATO collegues. We can simply explain the difference between MiG era and Gripen era, describing the percentage of pilot workload during flight: with MiG 29 80 percent was dedicated to fly, 20 percent to the target, with Gripen, 20 percent to flying, 80 percent to the target.”

In terms of maintenance the Gripen represents a step forward. After the end of the alliance with Russia, the collaboration between the two Countries ended and this meant that even providing spare parts and technician training for the MiG was over. With the Gripen, the cooperation with swedish technicians is fully active and the training of Hugarian ground crews as well. At MH 59. the aircraft is overhauled after 50 and 200 hours, with particularly attention to the engine, and after 800 hours it is sent to SAAB for deeper checks. Differently from russian engines, the Gripen’s RM12 engine has a life of around 8-10.000 flight hours and as 1st Lt. Bàlint Földi explains, it can be replaced in only four hours.

Leasing a fighter jet was seen as the best option for Hungary’s operational strategy and requirements. The total price has to be paid in smaller amounts during the leasing period. The contract also covers continuous support and training needs. Brig. Gen. Csaba Ugrik explains that “our contract is mainly with Swedish State, not directely with SAAB. The leasing includes all the upgrades that SAAB needs to apply to the aircraft, we pay an extra only if we ask for an additional upgrade. In 2026 the leasing will end, and at this moment the decision for the future is still to be undertaken.”


Ovde je deo o MIG-29 i link na clanak https://www.mycity-military.com/Avioni/MiG-29-Fulcrum_2507.html#p2070184

Nesto su ovde izbrljali sa podacima za motor i nije overhaul nego pregled.

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dakota ::gavrilon ::Dosta interesantno predavanje/ debata na temu "Fizika u Gripenu"
Procitah ovaj tekst pa sam u cudu jer niko nije reagovao od citalaca. Neko ko je iskreno zainteresovan za vazduhoplovstvo i u ovom slucaju za ovaj pomislice da su neki navodi zaista istiniti.

Za nas tantuse - šta nije tačno?

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  • powSrb 
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kuntalo ::dakota ::gavrilon ::Dosta interesantno predavanje/ debata na temu "Fizika u Gripenu"
Procitah ovaj tekst pa sam u cudu jer niko nije reagovao od citalaca. Neko ko je iskreno zainteresovan za vazduhoplovstvo i u ovom slucaju za ovaj pomislice da su neki navodi zaista istiniti.

Za nas tantuse - šta nije tačno?


Ko god pita nije tantuz.

Idemo po secanju, mig 21 pravi na nadzvucnim brzinam krug od deset kilometara a gripen manje od jednog. Zatim pilot na fbw se priseca nekakvog fidbeka komandi na mg21. Zatim iskakanje na M 1.8 iz gripena. Ako vam je za verovati, ovo veze s mozgom nema.

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Radijus zaokreta nije bio problem kod MiG-21 u njegovo vreme. Kontinuirano je unapređivan. Mogao je nešto ispričati o realnim problemima. Gubitku brzine pri zaokretu, a ne nebuloznom radiusu. O ponašanju normalno natovaren sa puno goriva i kad je bio na poslednjoj trećini rezervoara. Onda šta je doneo napredak u tehnologiji i koje su stvarne prednosti JAS-39.

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