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Tu-134 with PS-90 engines: possible or not?

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Сообщение Flight fan » 21 мар 2013, 23:26

Yesterday evening i had a, to me, interesting idea. To keep the Tu-134 design flying longer, would it be possible to equip the airframe with PS-90 engines? Even if it's possible, would it be profitable, or just a waste of money?

I would very much like to see this become reality, but sadly i don't think that's going to happen. Atleast not any time soon.
My collection at DiMA: http://www.diecastmodelaircraft.com/collection/stockholm_flyer
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Сообщение Eugenius » 22 мар 2013, 08:39

Oscar, I think it would be more feasible to put GE90 engine on DC-3 - in such a case just one engine per plane would be enough. :)

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Сообщение Eugenius » 22 мар 2013, 09:05

alrosa писал(а):Oskar, we have such saying. If the grandmother had eggs she would be the grandfather :D
- "balls", not "eggs".

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Сообщение Flight fan » 23 мар 2013, 02:07

Eugenius: It's really that much of a differance?

alrosa: That does sound like a better idea. As i was pretty tired when the thought struck me i didn't really think about the engines power.
My collection at DiMA: http://www.diecastmodelaircraft.com/collection/stockholm_flyer
My YouTube channel: http://www.youtube.com/user/MrFlightfan?feature=mhee

I don't always write in Russian, but when i do, i use Google Translate.

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Сообщение MSX » 23 мар 2013, 20:23

alrosa писал(а):Oskar, we have such saying. If the grandmother had eggs she would be the grandfather :D

Eugenius писал(а): "balls", not "eggs".

Flight fan писал(а): It's really that much of a differance?


Gee, what a discussion you guys are having down here! :D

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Сообщение Flight fan » 23 мар 2013, 21:01

MSX писал(а):
alrosa писал(а):Oskar, we have such saying. If the grandmother had eggs she would be the grandfather :D

Eugenius писал(а): "balls", not "eggs".

Flight fan писал(а): It's really that much of a differance?


Gee, what a discussion you guys are having down here! :D


Ah, dude! I meant about the engines. :P

Edit: Note to self: don't write on forums when tired.
My collection at DiMA: http://www.diecastmodelaircraft.com/collection/stockholm_flyer
My YouTube channel: http://www.youtube.com/user/MrFlightfan?feature=mhee

I don't always write in Russian, but when i do, i use Google Translate.

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Сообщение mikhaila320 » 24 мар 2013, 10:25

I suppose ПС-90 engines can not be installed on Tu-134 due to weight & balance, "G"-coefficient (center gravity) and aerodynamics (different engine size and summary geometry). The cost of remotorization with corresponding A/C systems redesign will kill all practical benefits.

The single engine installation (from B777 in push or pull positioning) for mentioned A/C is more funny :)
The fuselage in the middle as a spinner :)
АФЛ 1:400

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Сообщение Eugenius » 24 мар 2013, 13:06

Oscar, seriously: the number of airworthy Tu-134 frames is rapidly decreasing, the cost of 2 new PS-90s will be more, than the value of Tu-134 airframe, plus re-motorization cost, plus the obvious fact PS-90 is too powerful for Tu-134 = this is just a theoretical dream having zero economical feasibility.

There were traditional holywars in all Russian aviation forums some years ago: "Would it be possible to put 2 modern engines on Tu-154 and Il-86 instead of current 3 and 4, and to bring those planes back to the skies?" Technically - theoretically possible, but economically - definitely no.

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Сообщение Flight fan » 24 мар 2013, 20:13

mikhaila320 писал(а):I suppose ПС-90 engines can not be installed on Tu-134 due to weight & balance, "G"-coefficient (center gravity) and aerodynamics (different engine size and summary geometry). The cost of remotorization with corresponding A/C systems redesign will kill all practical benefits.

The single engine installation (from B777 in push or pull positioning) for mentioned A/C is more funny :)
The fuselage in the middle as a spinner :)


Eugenius писал(а):Oscar, seriously: the number of airworthy Tu-134 frames is rapidly decreasing, the cost of 2 new PS-90s will be more, than the value of Tu-134 airframe, plus re-motorization cost, plus the obvious fact PS-90 is too powerful for Tu-134 = this is just a theoretical dream having zero economical feasibility.

There were traditional holywars in all Russian aviation forums some years ago: "Would it be possible to put 2 modern engines on Tu-154 and Il-86 instead of current 3 and 4, and to bring those planes back to the skies?" Technically - theoretically possible, but economically - definitely no.


Sadly i had a feeling that this was what it would come down to... :(
My collection at DiMA: http://www.diecastmodelaircraft.com/collection/stockholm_flyer
My YouTube channel: http://www.youtube.com/user/MrFlightfan?feature=mhee

I don't always write in Russian, but when i do, i use Google Translate.


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