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Aug 5, 2019
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Its also heavier, crappier when it comes to thrust to weight ratio. If Iran wants to put an effort into such a heavy engine, it should focus on Tomcat's TF-30 engine.
True but still a leap forward. Perhaps there are some technologies in this they want/need to master before moving on to other engines. I am sure they have good reasons for whatever engine they decide to focus on first.
 

Myself

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AL-21F-3 is the modified version of J-79 with superior performance in most aspects. Also, hard to find from other markets than Russia. So, may be a plan to work on it!
 

skyshadow

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Does anyone have a link to the telewebion footage of the jet engine? @skyshadow
https://www.telewebion.com/episode/2092650

NO !

440px-Pratt%26Whitney-SNECMA_TF306_%281%29.JPG




Not even RD-33 !

rd-33-500x500.png

then j 79 maybe?
 

Ray_Atek

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Apr 24, 2017
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Turbine inlet temperature of Al21f3 is more than j-79 and it because of kind of Thermal barrier coating, coated on Al2qf3 turbine blade.
So increasing turbine inlet temperature of j-79 convert it to high performance engine.
 

Myself

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Turbine inlet temperature of Al21f3 is more than j-79 and it because of kind of Thermal barrier coating, coated on Al2qf3 turbine blade.
So increasing turbine inlet temperature of j-79 convert it to high performance engine.
It is not as easy as you said. All critical components have to be redesigned if more power is needed. Saving in fuel consumption is the only benefit which can be gained with minimum changes. Remember the compression ratios are also different.
 

sahureka2

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[QUOTE = "T-72B, post: 11722488, membro: 191265"] Contrassegna la mia parola
F-313 will be ready by 2022 [/ QUOTE]

I think the current F313 is just a small-scale prototype to test the characteristics of what will be the real aircraft.
Reduced scale necessary as it seems that the J-85s are used.
2022, yes perhaps they could also present a prototype of F313 in the final dimensions only if the tests of the reduced version have had positive results, but also if engines of adequate power of new production will be available or, at least in the prototype, use a couple of regenerated engines already present in Iran.
 

hussainb72

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Imo, even a reverse engineered j-79 is a very important and big step towards better engines, because it shows that iran is now more capable in the field of alloys and super alloys and can make materials that can sustain higher temperatures and conditions. And if it has a better performance than the original j-79s on the f-4 then the f-4s can be upgraded with this engine, and no one should think that the f-4 is useless no matter how much its upgraded, Turkey still uses it and has heavily upgraded it, and iran is doing the same, the plane can carry a huge payload and can be used in all kinds of missions, if it can be upgraded, renewed and overhauled then there is no reason to retire it.
 

Myself

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Imo, even a reverse engineered j-79 is a very important and big step towards better engines, because it shows that iran is now more capable in the field of alloys and super alloys and can make materials that can sustain higher temperatures and conditions. And if it has a better performance than the original j-79s on the f-4 then the f-4s can be upgraded with this engine, and no one should think that the f-4 is useless no matter how much its upgraded, Turkey still uses it and has heavily upgraded it, and iran is doing the same, the plane can carry a huge payload and can be used in all kinds of missions, if it can be upgraded, renewed and overhauled then there is no reason to retire it.
Investing on J-79 is nothing but wasting time and resources; while the advanced version of it i.e. AL-21F3 exists in Iran hands, and in fact more needed. Iran purchased around ~ 250 Phantoms with too many spare engines. Currently, only a quarter of the fleet have survived according to many internet resources. So, there should be more than enough spare parts and engines in Iran’s inventory as well as in (even not) black market.
C9CF3185-545D-4AB7-8D8F-B5B8392F75C6.jpeg
 

hussainb72

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Investing on J-79 is nothing but wasting time and resources; while the advanced version of it i.e. AL-21F3 exists in Iran hands, and in fact more needed. Iran purchased around ~ 250 Phantoms with too many spare engines. Currently, only a quarter of the fleet have survived according to many internet resources. So, there should be more than enough spare parts and engines in Iran’s inventory as well as in (even not) black market.
View attachment 575826

Again IMO, It's not always necessary for something to really be useful for it to be made. Sometimes, the process of making itself is more important than the engine itself because iran can gain experience working on bigger and more complex engines, and then it can use that knowledge to focus on other engines like the RD-33.
But yea, working on the AL-21F3 is the better choice here, as it has better performance.
 

PeeD

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RD-33 is the best path for Iran.
It makes no sense to do the effort for re-engineering the J-79 if it could be done on the RD-33.
Only if Iran got all "blueprints" of the J-79 and prior to it the J-85 producing these engines makes any sense.

The re-engineering step from J-79 to RD-33 is not a big one but the result for the latter is a efficient turbofan used in 2019 5th Gen. demonstrators, while the other is a obsolete fuel thirsty turbojet.
 

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