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Bangladesh air force received 9 K-8w aircraft

What is the engine used in K-8W? WS11?
Ivchenko AI-25 - Wikipedia, the free encyclopedia

L 39 uses older version of the same engine:
Aero L-39 Albatros - Wikipedia, the free encyclopedia

http://www.motorsich.com/eng/products/aircraft/tde/ai-25tlsh/#optionalCustomIdentifier

AI-25TLSh
This turbofan is a version of the AI-25TL engine mounted in the L-39 and K-8J trainer aircraft. It can power combat trainer modifications of these aircrafts and be adapted to power other existing trainer and combat trainer aircraft and those under development to be used as light attack aircraft. In this respect, a combat power rating of enhanced maximum thrust, employed for strike operations, has been additionally introduced and engine acceleration time has been substantially reduced.
The engine preserves the previous design of automatic control system to provide retrofitting the earlier produced L-39 and K-8J aircraft. At a customer's request, the engine can be modified to be controlled by a FADEC system.

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Main advantages of the engine:
  • High reliability ensuring the highest possible flight safety, which is proved by the fact that around 5,000 AI- 25TL engines are operated in 37 countries, their total operating time approaches to 7,000,000 hours;
  • High level of gas-dynamic stability at external disturbances, including those when launching onboard weapons;
  • High fuel efficiency;
  • Insignificant labor and time input for maintenance;
  • Minimum life cycle cost.
Basic specifications:
Combat Training
Maximum power condition (H=0, M=0, ISA)
Thrust, kgf (kN)1850 (1815)1720 (1687)
SFC, kg/(kgf•h) (kg/kN•h)0.61 (62.18)0.575 (58.6)
Maximum power condition (H=0; M=0,6; ISA+15 °C)
Thrust, kgf (kN)1250 (12.26)1100 (10.79)
Cruise power condition (H=6 km; M=0,483; ISA)
Thrust, kgf (kN)515 (5.05)515 (5.05)
SFC, kg/(kgf•h) (kg/kN•h)0.79 (80.6)0.79 (80.6)
Acceleration time, smax 6max 6
Dry weight, kg350350


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Early 90s is fairly new in Trainer Aircraft terms man! Why are they retiring them? Unless it's got something to do with lack of spares and servicing, L-39s still may have at least a decade or more worth of TTL in them.

Don't just look at the years in service look at the number of hours flown and the weather stress and yes russian past poor help related to spares provision.
 
No glass cockpit no martin baker seats i guess

Wiki (which isn't very reliable) says that K-8W is a variant of the K-8 with 'improved' cockpit (see below) and HUD with no U.S.-controlled parts. This version is serving reliably in Venezuela and Bolivia.

I don't get the point about no glass cockpit (see below), a trainer doesn't need super complicated (meaning high learning-curve) electronics. It just needs to have enough basics which can be a follow-on to the next level of training (Yak 130) which has been ordered already.

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L-39 is being replaced with the Yak 130. K-8 is replacing various oddball trainers like T-38 Tweet, Fouga Magister etc. BAF is modernizing and standardizing at the same time with some stable longtime platforms.
 
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Alhamdulillah All of our JL/K-8(we have 9) Primary Jet Trainer Safely Landed on Shah Amanat International Airport(BAF Base Zahurul Haque ) today.


source:25SQN of BAF

:yay::yay::yay::yay:

more news: 2 yak-130 test jets are coming by the end of this year :rap:

Yak 130's are replacing L-39's in the advanced trainer category. Bangladesh can also use the Yak-130's in a light interdiction and strike capability. Witness the hardpoints below. Amazing :-)

IMHO this was a smart move - getting 24 of these for $360 million rather than eight Mig-29SMT fighters for $500 million.

Yak-130 has nine hard points: two wingtip, six under-wing and one beneath the center fuselage. It can carry a wide range of modern weapons and other stores, including external wing combat fuel tanks, bombs weighing up to 500kg, TV homing/cockpit-displayed guided bombs, rockets, a twin 23mm gun pod, R-73 infrared-homing air-to-air missiles, and electronic countermeasures pods and chaff and flare dispensers, up to a maximum combat load of 3,000kg.

Yak-130 also has a head-up display (HUD) and a helmet-mounted sighting system (HMSS) with a double GPS/GLONASS receiver updating a laser ring gyro inertial navigation system for highly accurate navigation and precision targeting. This transforms its capability into a highly potent light ground attack/fighter. I'd say that this is in the same class as the LCA (what the LCA should have become) as a MiG-21 replacement and approaching the JF-17 in sophistication if not size or speed.

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I think the K-8Ws are augmenting the L-39ZA aircraft.... the L-39 squadron had been running at half-strength for long.... 9 K-8W will mean a full squadron for basic jet training.... remember that the T-37 squadron was retired without replacement.... since then the 7 L-39 aircraft had been bearing the burden of basic and advanced jet training...... Yak-130s are likely to replace the J-6/A-5iii aircraft in OCU role....

Yak 130's are replacing L-39's in the advanced trainer category. Bangladesh can also use the Yak-130's in a light interdiction and strike capability. Witness the hardpoints below. Amazing :-)

IMHO this was a smart move - getting 24 of these for $360 million rather than eight Mig-29SMT fighters for $500 million.

Yak-130 has nine hard points: two wingtip, six under-wing and one beneath the center fuselage. It can carry a wide range of modern weapons and other stores, including external wing combat fuel tanks, bombs weighing up to 500kg, TV homing/cockpit-displayed guided bombs, rockets, a twin 23mm gun pod, R-73 infrared-homing air-to-air missiles, and electronic countermeasures pods and chaff and flare dispensers, up to a maximum combat load of 3,000kg.

Yak-130 also has a head-up display (HUD) and a helmet-mounted sighting system (HMSS) with a double GPS/GLONASS receiver updating a laser ring gyro inertial navigation system for highly accurate navigation and precision targeting. This transforms its capability into a highly potent light ground attack/fighter. I'd say that this is in the same class as the LCA (what the LCA should have become) as a MiG-21 replacement and approaching the JF-17 in sophistication if not size or speed.

View attachment 86998
View attachment 86999

I agree with you..... I think two squadrons are likely to be formed out of the Yak-130s..... one is obviously going to replace the F-6/A-5iii for OCU role.... but the other is the one I'm more interested in..... it will all depend on what weaponry comes with the Yaks..... that will give the final idea of the role of those aircraft.... but it seems there's gonna be a new squadron.....
 
I think the K-8Ws are augmenting the L-39ZA aircraft.... the L-39 squadron had been running at half-strength for long.... 9 K-8W will mean a full squadron for basic jet training.... remember that the T-37 squadron was retired without replacement.... since then the 7 L-39 aircraft had been bearing the burden of basic and advanced jet training...... Yak-130s are likely to replace the J-6/A-5iii aircraft in OCU role....



I agree with you..... I think two squadrons are likely to be formed out of the Yak-130s..... one is obviously going to replace the F-6/A-5iii for OCU role.... but the other is the one I'm more interested in..... it will all depend on what weaponry comes with the Yaks..... that will give the final idea of the role of those aircraft.... but it seems there's gonna be a new squadron.....

I hadn't thought along those lines. Agreed on all points. :-)
 
Yak 130's are replacing L-39's in the advanced trainer category. Bangladesh can also use the Yak-130's in a light interdiction and strike capability. Witness the hardpoints below. Amazing :-)

IMHO this was a smart move - getting 24 of these for $360 million rather than eight Mig-29SMT fighters for $500 million.

Yak-130 has nine hard points: two wingtip, six under-wing and one beneath the center fuselage. It can carry a wide range of modern weapons and other stores, including external wing combat fuel tanks, bombs weighing up to 500kg, TV homing/cockpit-displayed guided bombs, rockets, a twin 23mm gun pod, R-73 infrared-homing air-to-air missiles, and electronic countermeasures pods and chaff and flare dispensers, up to a maximum combat load of 3,000kg.

Yak-130 also has a head-up display (HUD) and a helmet-mounted sighting system (HMSS) with a double GPS/GLONASS receiver updating a laser ring gyro inertial navigation system for highly accurate navigation and precision targeting. This transforms its capability into a highly potent light ground attack/fighter. I'd say that this is in the same class as the LCA (what the LCA should have become) as a MiG-21 replacement and approaching the JF-17 in sophistication if not size or speed.

View attachment 86998
View attachment 86999

They also use L39 as combat aircraft now. Yak 130 will take its place.

BD air force must be in a good plan of acquiring both chinese and russian advanced fighters. Thats why they are buying two kinds of trainers at a same time.
 

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