+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based on historical facts. BEWARE!
Some background:
The Indian „Samudree Baaj“ (समुद्री बाज, Sea Hawk) was a highly modified, navalized version of the British BAE Systems Hawk land-based training jet aircraft, which had been manufactured under license by Hindustan Aeronautics Limited (HAL). The first indigenously built Hawk Mk. 132 trainer was delivered in 2008 to the Indian Air Force, and the type has since then been updated with indigenous avionics into the “Hawk-I” Mk. 132 from 2020 onwards. The aircraft’s Rolls Royce Adour Mk 871 engine was also license-built by HAL, and the company had experience from a wide range of aircraft projects in the past.
The Samudree Baaj project was initiated in 2006 by the Indian Navy, as part of the long historic plan to provide the Indian Navy with a fully capable aircraft carrier. This plan had been initiated in 1989, when India announced a plan to replace its ageing British-built aircraft carriers, INS Vikrant and INS Viraat (ex-HMS Hermes), with two new 28,000-ton Air Defence Ships (ADS) that would operate the BAe Sea Harrier aircraft. The first vessel was to replace Vikrant, which was set to decommission in early 1997. Construction of the ADS was to start at the Cochin Shipyard (CSL) in 1993 after the Indian Naval Design Organisation had translated this design study into a production model. Following the 1991 economic crisis, the plans for construction of the vessels were put on hold indefinitely.
In 1999, then-Defence Minister George Fernandes revived the project and sanctioned the construction of the Project “71 ADS”. By that time, given the ageing Sea Harrier fleet, the letter of intent called for a carrier that would carry more modern jet fighters. In 2001, CSL released a graphic illustration showing a 32,000-ton STOBAR (Short Take-Off But Arrested Recovery) design with a pronounced ski jump. The aircraft carrier project finally received formal government approval in January 2003. By then, design updates called for a 37,500-ton carrier to operate the MiG-29K. India opted for a three-carrier fleet consisting of one carrier battle group stationed on each seaboard, and a third carrier held in reserve, in order to continuously protect both its flanks, to protect economic interests and mercantile traffic, and to provide humanitarian platforms in times of disasters, since a carrier can provide a self-generating supply of fresh water, medical assistance or engineering expertise to populations in need for assistance.
In August 2006, then-Chief of the Naval Staff, Admiral Arun Prakash stated that the designation for the vessel had been changed from Air Defence Ship (ADS) to Indigenous Aircraft Carrier (IAC). The euphemistic ADS had been adopted in planning stages to ward off concerns about a naval build-up. Final revisions to the design increased the displacement of the carrier from 37,500 tons to over 40,000 tons. The length of the ship also increased from 252 metres (827 ft) to 262 metres (860 ft).
It was at this time that, beyond the MiG-29K, primarily a carrier-capable trainer and also a light (and less costly) strike aircraft would be needed. With the running production of the Hawk Mk. 132 for the Indian Air Force and BAE Systems’ connection and experience to the USA and McDonnell/Boeing’s adaptation of the Hawk as the US Navy’s carrier-capable T-45 trainer, HAL was instructed to develop a suitable aircraft family on the Hawk’s basis for the new carriers.
HAL’s Samudree Baaj is a fully carrier-capable version of the British Aerospace Hawk Mk. The Hawk had not originally been designed to perform carrier operations, so that numerous modifications were required, such as the extensive strengthening of the airframe to withstand the excessive forces imposed by the stresses involved in catapult launches and high sink-rate landings, both scenarios being routine in aircraft carrier operations.
The aerodynamic changes of the aircraft, which were mutually developed by HAL and BAE Systems, included improvements to the low-speed handling characteristics and a reduction in the approach speed. Most notable amongst the changes made to the Hawk's design were extended flaps for better low-speed handling, along with the addition of spoilers on the wings to reduce lift and strakes on the fuselage which improved airflow and stabilizer efficiency.
Other, less obvious modifications included a reinforced airframe, the adoption of a more robust and widened landing gear, complete with a catapult tow bar attachment to the oleo strut of the new two-wheel nose gear design, and an arresting hook. The tail fin was extended by 1 foot (12 in, 30.5 cm) to compensate for the loss of the Hawk’s ventral stabilizing strakes. To make room for the arrester hook, the original ventral air brake was split and re-located to the flanks, similar to the USN’s T-45 trainer.
At the time of the Samudree Baaj’s design, the exact catapult arrangement and capacity on board of India’s new carriers was not clear yet – even more so, since the MiG-29K and its powerful engines might have made a catapult obsolete. Therefore, the Samudree Baaj was designed to be operable either with a ski jump ramp (in the style of the Russian Kiev class carriers, of which India had purchased one as INS Vikramaditya) or with only minimal launch support within the projected STOBAR concept, which included a relatively short-stroke steam catapult and a similarly short, undampened arrester gear.
By 2009 the basic airframe had been defined and four prototypes were built for two versions: the Mk. 101 trainer, which was basically a navalized version of the land-based Mk. 132 with almost the same mission equipment, and the Mk. 201, a single-seater. Two airframes of each type were built and the first Samudree Baaj flight took place in early 2011. The Indian government ordered 30 trainers and 15 attack aircraft, to be delivered with the first new Indian carrier, INS Vikrant, in late 2017.
The Samudree Baaj Mk. 201 was developed from the basic navalized Hawk airframe as a light multirole fighter with a small visual signature and high maneuverability, but high combat efficiency and capable of both strike and point defense missions. It differed from the trainer through a completely new forward fuselage whereby the forward cockpit area, which normally housed the trainee, was replaced by an electronics bay for avionics and onboard systems, including a fire control computer, a LINS 300 ring laser gyroscope inertial navigation system and a lightweight (145 kg) multimode, coherent, pulse-Doppler I band airborne radar. This multimode radar was developed from the Ferranti Blue Fox radar and capable of airborne interception and air-to-surface strike roles over water and land, with look-down/shoot-down and look-up modes. It had ten air-to-surface and ten air-to-ground modes for navigation and weapon aiming purposes.
A ventral fairing behind the radome carried a laser rangefinder and a forward-looking infrared (FLIR). Mid-air refueling was also possible, through a detachable (but fixed) probe. GPS navigation or modern night-flight systems were integrated, too.
Like the trainer, the Mk. 201 had a total of seven weapon hardpoints (1 ventral, four underwing and a pair of wing tip launch rails), but the more sophisticated avionics suite allowed a wider range of ordnance to be carried and deployed, which included radar-guided AAMs for BVR strokes and smart weapons and guided missiles – especially the Sea Eagle and AGM-84 “Harpoon” anti-ship missiles in the Indian Navy’s arsenal. For the maritime strike role and as a support for ASW missions, the Samudree Baaj Mk. 201 could even deploy Sting Ray homing torpedoes.
Furthermore, a pair of 30mm (1.18 in) ADEN machine cannon with 150 RPG were housed in a shallow fairing under the cockpit. The self-protection systems include a BAE SkyGuardian 200 RWR and automatic Vinten chaff/flare dispensers located above the engine exhaust.
The Samudree Baaj project was highly ambitious, so that it does not wonder that there were many delays and teething troubles. Beyond the complex avionics integration this included the maritime adaptation of the Adour engine, which eventually led to the uprated Adour Mk. 871-1N, which, as a side benefit, also offered about 10% more power.
However, in parallel, INS Vikrant also ran into delays: In July 2012, The Times of India reported that construction of Vikrant has been delayed by three years, and the ship would be ready for commissioning by 2018. Later, in November 2012, Indian English-language news channel NDTV reported that cost of the aircraft carrier had increased, and the delivery has been delayed by at least five years and is expected to be with the Indian Navy only after 2018 as against the scheduled date of delivery of 2014. Work then commenced for the next stage of construction, which included the installation of the integrated propulsion system, the superstructure, the upper decks, the cabling, sensors and weapons. Vikrant was eventually undocked on 10 June 2015 after the completion of structural work. Cabling, piping, heat and ventilation works were to be completed by 2017; sea trials would begin thereafter. In December 2019, it was reported that the engines on board the ship were switched on and in November 2020, only the basin trials of the aircraft carrier were completed.
By that time, the first Samudree Baaj aircraft had been delivered to Indian Navy 300 squadron, and even though only based at land at Hansa Air Station, flight training and military operations commenced. In the meantime, the start of Vikrant's trials had initially been scheduled to begin on 12 March 2020, but further construction delays caused that to be moved back to April. With the COVID-19 crisis, the navy explained that trials were unlikely to begin before September/October. During the Navy Day press meeting in December 2019, Navy Chief Admiral Karambir Singh said Vikrant would be fully operational before the end of 2022. The COVID-19 pandemic had already pushed that back to 2023 and further delays appeared possible.
In late 2020, the Indian Navy expected to commission Vikrant by the end of 2021. Until then, the Samudree Baaj fleet will remain land-based at INS Hansa near Goa. This not only is the INAS 300 home base, it is also the location of the Indian Navy's Shore Based Test Facility (SBTF), which is a mock-up of the 283-metre (928 ft) INS Vikramaditya (a modified Kiev-class aircraft carrier) deck built to train and certify navy pilots, primarily the the Mikoyan MiG-29K for operating from the aircraft carrier, but now also for the Samudree Baaj and for the developmental trials of the naval HAL Tejas lightweight fighter.
General characteristics:
Crew: 1
Length: 11.38 m (37 ft 4 in)
Wingspan: 9.39 m (30 ft 10 in)
Height: 4.30 m (14 ft 1 in)
Wing area: 17.66 m2 (190.1 sq ft)
Empty weight: 9,394 lb (4,261 kg)
Gross weight: 12,750 lb (5,783 kg)
Max takeoff weight: 9,101 kg (20,064 lb)
Fuel capacity: 1,360 kg (3,000 lb) internal
3,210 kg (7,080 lb) with 3 drop tanks
Powerplant:
1× Rolls-Royce Turbomeca Adour Mk. 871-1N non-afterburning turbofan, 28,89 kN (6,445 lbf) thrust
Performance:
Maximum speed: 1,037 km/h (644 mph, 560 kn) at sea level
Maximum speed: Mach 1.2 (never exceed at altitude)
Cruise speed: 796 km/h (495 mph, 430 kn) at 12,500 m (41,000 ft)
Carrier launch speed: 121 kn (139 mph; 224 km/h)
Approach speed: 125 kn (144 mph; 232 km/h)
Never exceed speed: 575 kn (662 mph, 1,065 km/h) / M1.04 design dive limit
Stall speed: 197 km/h (122 mph, 106 kn) flaps down
Range: 892 km (554 mi, 482 nmi) internal fuel only
Combat range: 617 km (383 mi, 333 nmi) with 2x AGM-84 and 2x 592 l (156 US gal; 130 imp gal)
Ferry range: 1,950 km (1,210 mi, 1,050 nmi) with 3 drop tanks
Service ceiling: 15,250 m (50,030 ft)
G-limits: +8/-3
Rate of climb: 58.466 m/s (11,509.1 ft/min)
Takeoff distance with maximum weapon load: 2,134 m (7,001 ft)
Landing distance at maximum landing weight with brake chute: 854 m (2,802 ft)
Landing distance at maximum landing weight without brake chute: 1,250 m (4,100 ft)
Armament:
2× 30 mm (1.181 in) Aden cannon with 150 rounds each
7× hardpoints (4× under-wing, 1× under-fuselage and 2 × wingtip)
for a total ordnance of 3.085 kg (6,800 lb) and a wide range of weapons
The kit and its assembly:
A subtle kitbashing project, inspired by a CG-rendition of a carrier-based (yet un-navalized) BAe Hawk 200 in Indian Navy service by fellow user SPINNERS in January 2021. I found the idea inspiring but thought that the basic concept could be taken further and into hardware form with a model. And I had a Matchbox Hawk 200 in The Stash™, as well as a McDonnell T-45 trainer from Italeri…
The plan sounds simple: take a T-45 and replace the cockpit section with the single-seat cockpit from the Hawk 200. And while the necessary cuts were easy to make, reality rears its ugly head when you try to mate parts from basically the same aircraft but from models by different manufacturers.
The challenges started with the fact that the fuselage shapes of both models differ – the Matchbox kit is more “voluminous”, and the different canopy shape called for a partial spine transplant, which turned out to be of very different shape than the T-45’s respective section! Lots of PSR…
In order to improve the pretty basic Matchbox Hawk cockpit I integrated the cockpit tub from the Italeri T-45, including the ejection seat, dashboard and its top cover.
For the totally different T-45 front wheel I had to enlarge the respective well and added a “ceiling” to it, since the strut had to be attached somewhere. The Hawk 200’s ventral tub for the cannons (which only the first prototype carried, later production aircraft did not feature them) were retained – partly because of their “whiffy“ nature, but also because making it disappear would have involved more major surgeries.
Most of the are behind the cockpit comes from the Italeri T-45, I just added a RHAWS fairing to the fin, extending it by 3mm.
A major problem became the air intakes, because the two kits differ in their construction. I wanted to use the Italeri parts, because they match the fairings on the fuselage flanks well and are better detailed than the Matchbox parts. But the boundary layer spacers between intakes and fuselage are molded into the Italeri parts, while the Matchbox kit has them molded into the fuselage. This called for major surgery and eventually worked out fine, and more PSR blended the rest of the fuselage donors around the cockpit together. A tedious process, though.
The pylons were puzzled together, including a former Matchbox EA-6B wing pylon under the fuselage, cut down and mounted in reverse and upside down! The ordnance comes from the Italeri NATO weapons set (Matra Magic and AGM-84), the ventral drop tank comes IIRC from an Eduard L-39 Albatros. Matra Magics were chosen because India never operated any Sidewinder AAM, just French or Soviet/Russian missiles like the R-60 or R-73 (unlikely on the Hawk, IMHO), and I had preferred a pair of Sea Eagle ASMs (from a Hasegawa Sea Harrier kit), but their span turned out to be too large for the Hawk’s low wings. The alternative, more slender Harpoons are plausible, though, since they are actually part of the Indian Navy’s inventory.
Painting and markings:
The Indian Navy theme was already settled, and I wanted to stay close to SPINNERS’ illustration as well as to real world Indian Navy aircraft. SPINNERS’ Hawk carried the typical Sea Harreir scheme in Extra Dark Sea Grey and White, and I found this livery to look a bit too much retro, because I’d place this what-if aircraft in the early 2020s, when the Sea Harriers had already been phased out. A “realistic” livery might have been an overall mid-grey paint scheme (like the land-based Indian Hawk 132s), but I found this to look too boring. As a compromise, I gave the Samudree Baaj a simple two-tone paint scheme, carried by a few late Indian Sea Harriers. It consists of upper surfaces in Dark Sea Grey (Humbrol 164) and undersides in Medium Sea Grey (Modelmaster 2058), with a low waterline. The Modelmaster MSG has – for my taste – a rather bluish hue and appears almost like PRU Blue, but I left it that way.
The decals were puzzled together from variosu sources. the roundels come from a MiG-21F (Begemot), the unit markings and tactical codes from a Model Alliance Sea Harrier sheet, and the stencils are a mix from the Matchbox Hawk 200 and the Italeri T-45.
The kit was sealed with matt acrylic varnish from Italeri.
The fictional HAL „Samudree Baaj“ looks simple, but combining kits of the basically same aircraft from different manufacturers reveals their differences, and they are not to be underestimated! However, I like the result of a navalized Hawk single-seater, and - also with the relatively simple and dull livery - it looks pretty convincing.
Many thanks to SPINNERS for the creative inspiration - even though my build is not a 100% "copy" of the artwork, but rather a step further into the navalisation idea with the T-45 parts.
