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{| {{Infobox ship begin }}
{|{{Infobox aircraft begin
{{Infobox Ship Image
|name=A6
|Ship image=File:Project 426.png
|image=File:Soviet_M-4_Bison_bomber_in_flight_1982.JPEG
|Ship caption=Project 04261 HA-240 (2017)
|caption=Derivative of 3MD strategic bomber
}}
}}{{Infobox aircraft type
{{Infobox Ship Class Overview
|type= {{wp|Strategic bomber}}
|Name= ''Project 04260''
|national origin= {{flag|Velikoslavia}} / {{flag|Itayana}}
|Builders= [[Shipbuilding Plant No.143]]
|designer=
|Operators= {{flagicon|Itayana}} [[Itayana Navy]]
|first flight= 1956 (M-6/3M) / 2009 (A6)
|Class before=
|introduced= 1958 (M-6/3M) / 2012 (A6)
|Class after=
|produced= 2012-current
|Subclasses=
|primary user= [[Itayana Solar Air Fleet]]
|Cost=
|more users= [[Itayana Navy]]
|Built range= 2010 - present
|number built= 11-16 (estimated)
|In service range= 2017 - present
|status= In service
|In commission range=
|unit cost=  
|Total ships planned= 12-16
|developed from = {{wp|Myasishchev M-4|M-4}}
|Total ships building= 4
|Total ships completed= 6
|Total ships cancelled=
|Total ships active= 6
|Total ships laid up=
|Total ships lost=
|Total ships retired=
|Total ships preserved=
}}
{{Infobox Ship Characteristics
|Hide header=
|Header caption=
|Ship type= {{wp|Attack submarine}}  
|Ship displacement= * 7,000 tonnes surfaced
* 0,900 tonnes submerged
|Ship length=113.67m
|Ship beam=10m
|Ship height=
|Ship draught= 11m
|Ship depth=
|Ship hold depth=
|Ship decks=
|Ship deck clearance=
|Ship ramps=
|Ship ice class=
|Ship power= Diesel-electric, pump jet
|Ship sail plan=
|Ship speed=
* 15kn surfaced (publicly disclosed figure)
* 25kn submerged (publicly disclosed figure)
|Ship range= *'''With snorkel:''' {{convert|12,000|nmi|abbr=on}} at {{convert|12|kn|abbr=on}} (publicly disclosed figure)
|Ship endurance= 120 days
|Ship test depth= 400m (publicly disclosed figure)
|Ship boats=
|Ship capacity=  
|Ship troops=
|Ship complement=
|Ship crew= 45 men (21 officer)
|Ship time to activate=
|Ship sensors=  
* Surface-Search Radar
* Electronic Warfare Suite
* Optronic mast
* Active Hull Sonar
* 6 x Hull Sonar Flank Array (Passive)
* Towed Array Sonar
* Wake Detection System
* ''White Whale'' Combat Integration and Submarine Management Suite
|Ship Countermeasures =
|Ship armament=
* 4 x 660mm torpedo tubes (16 torpedoes)
* 2 x 324mm torpedo tubes (20 torpedoes)
* 4 x 324mm external launchers (with reloads)
}}
}}
|}
|}


The '''Project 04260''', NATA reporting name: '''Claire''', is a class of long-range diesel-electric attack submarines in service of the [[Itayana Navy]]. It was originally designed in the late 2000s as the bigger of the two domestic submarine designs. The class had a protracted development history, being plagued by financial problems, lack of necessary equipment, and overly ambitious requirements, necessitating outside help to be completed. Nonetheless, six submarines of the initial '''Project 04261''' entered the operational service in the late 2010s. Additional four boats of the related '''Project 04262''' are on sea trials or under construction as of 2022.
The '''A6''' (NATA reporting name: '''Bison-T''') is a type of strategic bomber in service of the [[Itayana Solar Air Fleet]] (ISAF) and [[Itayana Navy|Itayana Naval Aviation Division]] (INAD). It was derived from the Velikoslavian {{wp|Myasishchev M-4|3M strategic bomber}} design (ISAF designation: '''A4''') procured during 2000s to provide the nascent Solar Air Fleet with long-range capabilities. The aircraft was developed with technical assistance of [[Oxidentale Jet Works]] consortium and incorporates several improvements over the baseline design, including using composite materials and new avionics.  


==Development==
First flown in 2009 an entering service in 2012, it is one of the largest aircraft in service of the Solar Air Fleet and the largest aircraft domestically assembled by [[Itayana]] yet. Existing reports indicate the production is underway on the Aircraft Plant No.98 at a slow rate. Estimates vary as to how many aircraft are in service, though no more than 20 are assumed to be operational at present.
Unlike most of the [[Itayana Navy]] projects, the '''Project 04260''' has a relatively understood design history coming from the interviews of its lead designers and analysis of the open-source intelligence and media leaks.


The decision to design an ocean-going diesel-electric boat was made by the [[Itayana Navy|Admiralty of Itayana]] in 2002. The design requirements called for a submarine capable of operating in Salacian, Oorupaqi, west Vespanian and wast Makrian oceans in anti-shipping and anti-submarine capacity. The submarine was to be armed and equipped with domestic weapon systems yet to be developed. Diesel-electric propulsion was chosen over atomic as it was estimated that the Itayana economy and industry would not be able to handle a significant force of nuclear submarines. Other limiting factors included the capacity of the slipways and available industrial equipment on the [[Shipbuilding Plant No. 143]], the only facility that can build large ocean-going submarines in Itayana. The design process correlated with the industrial re-armament of the plant, and it was complicated by more and more ambitious requirements regarding armament, sonars, physical signatures, and automation, as well as complications in the development of domestic weapon systems and sensors. It has been reported that engineers from the [[Transoceanic_Co-Prosperity_Sphere#Burning Sun|Burning Sun Initiative]] have aided in the design effort, but so far there is no solid evidence of that.
==Operation and intended role==
'''A6''' bombers serve in the [[9th Air Wing]] of the [[Itayana Solar Air Fleet|ISAF]]. It is reported that the Solar Air Fleet maintains its strategic bomber force for stand-off missile capabilities, but available footage of various exercises suggest several other roles, including control of ground-launched cruise missiles and penetration operations. If proven correct, A6 bombers mark a major improvement of the ISAF capabilities compared to the older {{wp|Myasishchev M-4|A4 bombers}} due to their advanced avionics and operational employment. However, penetration operations put expensive airframes at risk and it is deemed unlikely that they will be conducted.


The design was completed by 2009, receiving the designation '''Project 04261''', and the first two boats were laid down in early 2010. Construction involved expensive and extensive contracts from several countries such as [[Sante Reze]], [[Orun Redisus]], [[Alanahr]], [[Velikoslavia]], [[Elatia]] and [[Zacapican]]. Both boats were launched in 2014, receiving numerical indexes instead of names in line with the established IMF naming conventions. The sea trials of the first pair lasted for three years and were succinctly described as "highly problematic". Both submarines entered service in mid-2017.
The most prominent appearance of the 9th Air Wing so far was an air parade during the state visit of [[Indóre II of Orun Redisus]] in 2020, on which eight A6 were observed among other planes of the formation.


In 2021 it was revealed that the fourth pair of submarines were constructed under an improved design, designated '''Project 04262'''. The chief designer stated that the primary goal was to incorporate mature domestic equipment that was originally intended for the first six submarines. She did not reveal whether construction of Project 04261 will be continued should the systems fail to match the expectations.
The [[105th Air Wing]] of the [[Itayana Navy|INAD]] employs a naval derivative of the A6 bomber, designated '''K6''' and distinguished by additional data links to integrate it with ships of the Itayana Navy, and possibly having extended combat range. One plane was observed on joint naval exercises with [[Zacapican]] in 2019 and three were present at the similar exercises with [[Sante Reze]] in 2020. This suggests a very low number of aircraft in service and that the Solar Air Fleet has a priority in receiving A6 airframes.


Available public information suggests that the Navy plans to receive from 12 to 16 of these submarines by 2030.
==Observed Variants==
Two variants of the aircraft were observed so far:
* '''A6'''. The baseline version, serving as a strategic bomber and missile carrier.
* '''K6'''. The naval aviation derivative with additional data links and sensors.  


==Design==
==Specifications==
'''Project 04260''' is a family of large ocean-going submarines designed for anti-shipping and anti-submarine operations. Its single-hulled design is optimized for underwater movement. The superstructure acts as a hydrodynamic cover for additional equipment and the sail forms a base for various masts. Notable design features are a smoothly faired transition from the hull superstructure to the sail, and the "X" arrangement of the stern planes, assumed to improve the maneuverability of the large boat. It has a crew of 45, of which 21 are officers, and is designed for the endurance of up to 120 days.


The submarine is powered by diesel-electric transmission and a water jet. While the lack of primary sources on the water jet suggests its domestic origins, available information indicates that different submarines use different engines from several manufacturers from [[Alanahr]] and [[Zacapican]]. Despite the variety, it is stated that all submarines are capable of achieving 15 knots while surfaced and 25 knots while underwater. The safe depth was stated to be within 400 meters.
{{Aircraft specs
 
|prime units?=met
The submarine's primary armament consists of four 660mm torpedo tubes. The choice of the larger torpedoes was dictated by torpedo design bureaus and justified with a significantly larger warhead, improved physical signatures, and more sophisticated guidance systems. The submarine is also armed with two 324mm internal torpedo tubes and four external 324mm torpedo launchers. Information on either 324mm or 660mm torpedoes of Itayana is sparse at best, but it is stated that the submarine is intended to carry 16 larger and 20 smaller reloads.
|crew=5-6
 
|length m=49.2
The electronic equipment of the submarine is centered around the ''White Whale'' Combat Integration and Submarine Management suite. It is stated to allow high degrees of automation, reducing the need for additional crew. The underwater detection suite consists of a spherical bow sonar, six flank arrays, a towed antenna, two arrays on the sail, and several antennas of the wake detection system. Surface and aerial detection are done using an X-band air search radar and a SIGINT and electronic warfare suite. It is possible that starting from the third pair (HA-278 and HA-182) the spherical sonar was replaced with a conformal antenna of unknown origins.
|span m=53.14
 
|height m=11.5
==Operational history==
|wing area sqm=359.82
In May 2018, HA-240 and HA-375 were observed participating in exercises with the [[Zacapine Navy]] in south Oorupaqi.
|empty weight kg=61200
 
|gross weight kg=122575
In May 2019, HA-240 and HA-434 were stated to participate in exercises with the [[Zacapine Navy]] in south Oorupaqi.
|max takeoff weight kg=181575
 
|eng1 number=4
In June 2019, HA-375 and HA-193 were observed in the west Vespanian ocean near Kayatman Sea. During the deployment, HA-193 appeared to have suffered mechanical troubles, causing it to lay adrift for two days with HA-375 escorting it. Both submarines were observed by the navies of the [[Association of Ozeros Nations]].
|eng1 name=KAE-90 turbofan
 
|eng1 type=
In March 2020, all four commissioned submarines were observed in the Salacian ocean, participating in a joint exercise with the [[Royal Redisan Navy]]. After the exercises, HA-434 visited Elatia, followed by Mutulese and Belfrasian navies through the Kayamuca Sea.
|eng1 kn=90.3
 
|eng1 note=
In May 2021, HA-434 and HA-193 were observed in the eastern Makria ocean, while HA-240 and HA-375 visited the mainland [[Sante Reze]].
|max speed kmh=960
 
|range km=16800
In April and May 2022, all six submarines in service made a voyage to the west Vespanian ocean, their mission unknown.
|ferry range km=22500
 
|ceiling m=14500
==Variants==
|wing loading kg/m2=520
* '''Project 04261.''' Baseline design. 6 boats completed.
|thrust/weight=0.2
* '''Project 04262.''' Improved design. 4 boats under onstruction or on trials. Available information suggests a higher ratio of domestic equipment. Details are unknown.
<!-- armament -->
 
|bombs=<br />
==Units==
** Up to 24000 kg conventional bombs in internal stores.
{| class="wikitable sortable"
|missiles=<br />
|+ style="padding-bottom:1em;" | Project 04261
** Up to 8 {{wp|cruise missile}}s carried externally.  
|- class="backgroundcolor5"
** Up to 12 cruise missiles in internal stores.
!  class="unsortable" width="10%" | Number !! width="20%" | Shipyard !! width="5%" | Project !! width="10%" | Laid down !! width="10%" | Launched !! class="unsortable" width="10%" | Commissioned!! class="unsortable" width="20%" | Status
|avionics=
|-
}}
|{{flagicon|Itayana}} HA-240||[[Shipbuilding Plant No.143]]||04261
|style="text-align:right" | 01.02.2010|| style="text-align:right" | 05.03.2014|| style="text-align:right" | 11.06.2017|| Active
|-
|{{flagicon|Itayana}} HA-375||[[Shipbuilding Plant No.143]]||04261
|style="text-align:right" | 01.02.2010|| style="text-align:right" | 05.03.2014|| style="text-align:right" | 11.06.2017|| Active
|-
|{{flagicon|Itayana}} HA-434||[[Shipbuilding Plant No.143]]||04261
|style="text-align:right" | 06.03.2014|| style="text-align:right" | 15.06.2017|| style="text-align:right" | 21.03.2019|| Active
|-
|{{flagicon|Itayana}} HA-193||[[Shipbuilding Plant No.143]]||04261
|style="text-align:right" | 06.03.2014|| style="text-align:right" | 15.06.2017|| style="text-align:right" | 21.03.2019|| Active
|-
|{{flagicon|Itayana}} HA-278||[[Shipbuilding Plant No.143]]||04261
|style="text-align:right" | 16.06.2017|| style="text-align:right" | 11.11.2019|| style="text-align:right" | 04.06.2021|| Active
|-
|{{flagicon|Itayana}} HA-182||[[Shipbuilding Plant No.143]]||04261
|style="text-align:right" | 16.06.2017|| style="text-align:right" | 11.11.2019|| style="text-align:right" | 04.06.2021|| Active
|}
 
{| class="wikitable sortable"
|+ style="padding-bottom:1em;" | Project 04262
|- class="backgroundcolor5"
!  class="unsortable" width="10%" | Number !! width="20%" | Shipyard !! width="5%" | Project !! width="10%" | Laid down !! width="10%" | Launched !! class="unsortable" width="10%" | Commissioned!! class="unsortable" width="20%" | Status
|-
|{{flagicon|Itayana}} HA-403||[[Shipbuilding Plant No.143]]||04262
|style="text-align:right" | 12.11.2019|| style="text-align:right" | 04.04.2021|| style="text-align:right" | N/A|| Undergoing sea trials
|-
|{{flagicon|Itayana}} HA-387||[[Shipbuilding Plant No.143]]||04262
|style="text-align:right" | 12.11.2019|| style="text-align:right" | 04.04.2021|| style="text-align:right" | N/A|| Undergoing sea trials
|-
|{{flagicon|Itayana}} HA-???||[[Shipbuilding Plant No.143]]||04262
|style="text-align:right" | 05.04.2021|| style="text-align:right" | N/A|| style="text-align:right" | N/A|| Under construction
|-
|{{flagicon|Itayana}} HA-???||[[Shipbuilding Plant No.143]]||04262
|style="text-align:right" | 05.04.2021|| style="text-align:right" | N/A|| style="text-align:right" | N/A|| Under construction
|}
==Operators==
* {{flagicon|Itayana}} [[Itayana Navy]] ─ 6 units + 4 under construction

Latest revision as of 19:32, 24 March 2023

A6
Soviet M-4 Bison bomber in flight 1982.JPEG
Derivative of 3MD strategic bomber
Role Strategic bomber
National origin  Velikoslavia /  Itayana
First flight 1956 (M-6/3M) / 2009 (A6)
Introduction 1958 (M-6/3M) / 2012 (A6)
Status In service
Primary users Itayana Solar Air Fleet
Itayana Navy
Produced 2012-current
Number built 11-16 (estimated)
Developed from M-4

The A6 (NATA reporting name: Bison-T) is a type of strategic bomber in service of the Itayana Solar Air Fleet (ISAF) and Itayana Naval Aviation Division (INAD). It was derived from the Velikoslavian 3M strategic bomber design (ISAF designation: A4) procured during 2000s to provide the nascent Solar Air Fleet with long-range capabilities. The aircraft was developed with technical assistance of Oxidentale Jet Works consortium and incorporates several improvements over the baseline design, including using composite materials and new avionics.

First flown in 2009 an entering service in 2012, it is one of the largest aircraft in service of the Solar Air Fleet and the largest aircraft domestically assembled by Itayana yet. Existing reports indicate the production is underway on the Aircraft Plant No.98 at a slow rate. Estimates vary as to how many aircraft are in service, though no more than 20 are assumed to be operational at present.

Operation and intended role

A6 bombers serve in the 9th Air Wing of the ISAF. It is reported that the Solar Air Fleet maintains its strategic bomber force for stand-off missile capabilities, but available footage of various exercises suggest several other roles, including control of ground-launched cruise missiles and penetration operations. If proven correct, A6 bombers mark a major improvement of the ISAF capabilities compared to the older A4 bombers due to their advanced avionics and operational employment. However, penetration operations put expensive airframes at risk and it is deemed unlikely that they will be conducted.

The most prominent appearance of the 9th Air Wing so far was an air parade during the state visit of Indóre II of Orun Redisus in 2020, on which eight A6 were observed among other planes of the formation.

The 105th Air Wing of the INAD employs a naval derivative of the A6 bomber, designated K6 and distinguished by additional data links to integrate it with ships of the Itayana Navy, and possibly having extended combat range. One plane was observed on joint naval exercises with Zacapican in 2019 and three were present at the similar exercises with Sante Reze in 2020. This suggests a very low number of aircraft in service and that the Solar Air Fleet has a priority in receiving A6 airframes.

Observed Variants

Two variants of the aircraft were observed so far:

  • A6. The baseline version, serving as a strategic bomber and missile carrier.
  • K6. The naval aviation derivative with additional data links and sensors.

Specifications

General characteristics

  • Crew: 5-6
  • Length: 49.2 m (161 ft 5 in)
  • Wingspan: 53.14 m (174 ft 4 in)
  • Height: 11.5 m (37 ft 9 in)
  • Wing area: 359.82 m2 (3,873.1 sq ft)
  • Empty weight: 61,200 kg (134,923 lb)
  • Gross weight: 122,575 kg (270,232 lb)
  • Max takeoff weight: 181,575 kg (400,304 lb)
  • Powerplant: 4 × KAE-90 turbofan , 90.3 kN (20,300 lbf) thrust each

Performance

  • Maximum speed: 960 km/h (597 mph; 518 kn)
  • Range: 16,800 km (10,439 mi; 9,071 nmi)
  • Ferry range: 22,500 km (13,981 mi; 12,149 nmi)
  • Service ceiling: 14,500 m (47,600 ft)
  • Wing loading: 520 kg/m2 (110 lb/sq ft)
  • Thrust/weight: 0.2

Armament

  • Missiles:
    • Up to 8 cruise missiles carried externally.
    • Up to 12 cruise missiles in internal stores.
  • Bombs:
    • Up to 24000 kg conventional bombs in internal stores.
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