The Airbus A330 Multi Role Tanker Transport (MRTT) is an aerial refuelling tanker aircraft based on the civilian Airbus A330.
In January 2004, the UK Ministry of Defence (MoD) announced the selection of the AirTanker consortium under a private finance initiative arrangement to provide air-to-air refuelling services for the British Army, Navy and Air Force.
The tanker transporters will replace the RAF’s fleet of 26 VC-10 and Tristar tanker aircraft which are approaching the end of their operational life.
The MoD air-to-air refuelling programme will cover a 27-year service period and represents the world’s largest defence private financing initiative arrangement. The contract includes options to extend the service for a further period.
Future strategic tanker aircraft (FSTA) programme
The programme is known as the future strategic tanker aircraft (FSTA) programme. In February 2005, AirTanker was confirmed as the preferred bidder for the FSTA.
In June 2007, the UK MoD approved the private finance initiative (PFI) for 14 A330-200 tankers.
Under the PFI, AirTanker will own and support the aircraft, while the RAF will fly the aircraft and have total operational control.
In March 2008, the UK MoD placed a 27-year contract for the 14 aircraft. The maiden flight of the RAF’s first A330-200 took place in September 2010. The second aircraft took off on its first flight in October 2010. The first A330-200 MRTT entered service in June 2011.
AirTanker consortium details
EADS leads the AirTanker consortium with a 40% share. It also includes Cobham (13.33%), Rolls-Royce (20%), Thales (13.33%) and VT Aerospace (13.33%).
The consortium will convert and own the A330-200 multirole tanker transporter (MRTT) aircraft. It is responsible for certifying and maintaining the aircraft and for the provision of crew training for the RAF and sponsored reservist aircrews to supplement the RAF crew when required.
Airbus A330-200 MRTT international orders
In April 2004, Australia also selected the A330-200 MRTT for the AIR 5402 requirement for five aircraft. The MRTT, designated the KC-30B, replaces Australia’s Boeing 707 tanker transporters. In June 2006, Airbus delivered the first A330 platform to EADS CASA in Madrid for conversion.
The first flight of the KC-30B for Australia took place in June 2007. Delivery of the first two units of the A330-200 MRTT aircraft to the Royal Australian Air Force (RAAF) occurred in June 2011.
The fifth and final aircraft was handed over to RAAF Base Amberley in December 2012. The RAAF A330-200 MRTT achieved initial operational capability (IOC) in February 2013.
In February 2007, the UAE selected the A330 MRTT and announced the procurement of three A330-200 MRTT aircraft the following year. The first aircraft accomplished its maiden flight in April 2011 and was delivered to the UAE Air Force in February 2013.
UAE received the second and third A330 MRTT aircraft from Airbus Military in May 2013 and August 2013, respectively.
In January 2008, Saudi Arabia placed an order for three A330 MRTT aircraft, which are equipped with the EADS air refuelling boom system (ARBS) and hose and drogue refuelling pods. A further three A330 MRTT aircraft were ordered by the Saudi Ministry of Defence and Aviation in July 2009, bringing the total number of orders to six.
The first A330-200 MRTT of the Royal Saudi Air Force (RSAF) completed its maiden flight in March 2011 and the first batch of three aircraft was delivered by early 2013.
The A330 MRTT aircraft formally entered into service with the RSAF in February 2013. Delivery of the first two aircraft of the second batch took place in 2014, while the sixth and final A330 MRTT delivery followed in June 2015.
In February 2008, the KC-30 (since re-designated the KC-45), a tanker based on the A330, was chosen for the US Air Force KC-X next-generation tanker requirement to replace the KC-135. Northrop Grumman led the KC-30 team, with EADS as a major subcontractor. In September 2008, the US Department of Defense upheld an appeal by competitor Boeing and cancelled the competition.
In January 2013, Airbus Military was selected as a preferred bidder by the Indian Government to supply six A330 MRTT aircraft for the Indian Air Force.
The French Defence Procurement Agency (DGA) placed a firm order for eight A330 MRTTs in December 2015 and a further three in December 2018. Designated as ‘Phénix’, the first aircraft was formally handed over in October 2018, while the delivery of the rest of the fleet will be completed by 2023.
In March 2018, Airbus received a revised contract for the delivery of eight A330 MRTTs under the NATO Multinational Multi-Role Tanker Transport Fleet (MMF) programme.
The Republic of Singapore Air Force received its first A330 MRTT aircraft in September 2018.
In January 2019, the Republic of Korea Air Force received its first A330 MRTT, bringing the total in-service fleet count to 35.
Deployment of the A330-200 FSTA
The company AirTanker Services operates and maintains the fleet of A330-200 MRTT aircraft. VT Group, the support services integrator, is based at RAF Brize Norton.
Royal Air Force aircrew will operate the aircraft for military services. When not in military service, the aircraft can be leased for commercial use and operated by civilian aircrew.
The fleet will be managed in three groups. The majority will be in full-time military service with the RAF. Another group will be in military service during the weekdays, switching to commercial use at the weekend, and the other aircraft will be in full-time commercial use but available to the RAF in times of crisis.
A full flight and mission simulator (FFS) for the A330 located in Seville, Spain was announced publicly in November 2018.
Manufacture / conversion of A330-200 future strategic tanker aircraft
The standard A330-200 commercial aircraft manufacturing takes place at the Airbus manufacturing centre at Toulouse.
In September 2011, the aircraft was transferred to Cobham manufacturing facilities at Bournemouth International Airport, UK, for conversion to the tanker transporter variant. Aircraft certification was also carried out by QinetiQ at Boscombe Down in the same month.
All the aircraft can be fitted with two Cobham FRL 900E Mark 32B refuelling pods, one under each wing. The A330-200 wing shares the same design structure, including the strengthened mounting points, as that of the four-engine A340 aircraft. The wing positions for mounting the air-to-air refuelling pods, therefore, require minimal modification.
The aircraft’s fuel system includes the installation of additional pipework and controls.
The baseline commercial aircraft uses a configuration of very high-capacity fuel tanks in the wings, so modifications to the fuel tanks for the tanker transporter role are not required.
Other than the refuelling systems, the main areas of modification are the installation of plug-in and removable military avionics, military communications, and a defensive aids suite. The military systems will be removed when the aircraft is in commercial non-military use. The passenger cabin and the cargo compartment are unchanged.
The lower deck cargo compartment can hold six 88in x 108in Nato standard pallets, plus two LD3 containers. The civil cargo load could be 28 LD3 containers or eight 96in x 125in pallets plus two LD3 containers.
Refuelling capabilities of the A330-200 MRTT aircraft
The A330-200 MRTT has a sufficiently high cruise speed and sizeable internal fuel capacity to fly 4,000km, refuel six fighter aircraft en-route, and carry 43t of non-fuel cargo. Similarly, the aircraft could give away 68t of fuel during two hours on station at a range of 1,000nm.
The aircraft has a maximum fuel capacity of 139,090l, or 111t. The high fuel capacity enables the aircraft to fly at longer ranges, to stay on station longer and refuel more aircraft, which increases the basing options and reduces forces reliance on host nation support. For the UK requirement, the aircraft is fitted with a hose and drogue system. However, it has a refuelling boom system for the Australian order.
Cobham is providing the air refuelling equipment, including the 905E wing pods and a fuselage refuelling unit. Cobham also supplies antennae, cockpit control systems, oxygen and fuel system units, and composite components for all Airbus A330 aircraft.
The QinetiQ AirTanker support team carried out an air refuelling trial of the A330-200 aircraft on 28 October 2003. The test involved assessing the handling qualities of the Tornado aircraft flown in a number of representatives refuelling positions astern the wing and centreline refuelling stations.
The two-hour flight test included various approaches to the refuelling positions and exploring displacements vertically and laterally from the normal refuelling position.
The trial was carried out between 15,000ft and 20,000ft and at 280kt, which is the middle of the Tornado’s refuelling envelope. Within this test envelope, there was minimum turbulence in the airflow astern the A330-200 and the Tornado’s handling qualities were very satisfactory in all tested positions.
In July 2018, Airbus performed the first ever automatic air-to-air refuelling of the A310 tanker with seven RAAF KC-30A MRTT. The company plans to perform the same operation with the A330 MRTT.
In December 2018, Lockheed Martin and Airbus entered a co-operation agreement to develop the air refuelling capabilities of A330 MRTT.
A330-200 future strategic tanker aircraft flight deck
The flight deck of the A330 is similar to that of the A340. The tanker transporter aircraft cockpit has a refuelling officer’s station behind the pilot and co-pilot seats.
An electronic flight information system provides six large interchangeable displays with duplicated primary flight and navigation displays (PFD and ND) and electronic centralised aircraft monitors (ECAM). The pilot and co-pilot positions have sidestick controllers and rudder pedals.
The aircraft is equipped with an Airbus future navigation system (FANS-A), including a Honeywell flight management system and Smiths digital control and display system.
The fly-by-wire computer suite includes three flight control primary computers and two flight control secondary computers, all operating continuously.
UK tankers are fitted with the Northrop Grumman large aircraft infrared countermeasures system (LAIRCM).
Even with a full fuel load, the aircraft can carry 43t of cargo and up to 380 passengers.
Engines used by the A330-200 FSTA
Two Rolls-Royce Trent 772B jet engines, each providing 71,100lb of thrust, power the UK’s aircraft. The aircraft for Australia use the GE CF6-80E1 engines, rated at 72,000lb thrust. The auxiliary power unit is a Hamilton Sundstrand GTCP 331-350C.
The main four-wheel bogie landing gear, the fuselage centre line twin-wheel auxiliary gear and the twin wheel nose units fitted with Goodyear tyres. The runway length for maximum take-off weight is 2,650m, and the ground turning radius is 43.6m.
- A330 MRTT: An Airbus A330-200 converted by Airbus Military for air-refuelling duties.
- KC-30A: Australian designation for an A330 MRTT with two under-wing refuelling pods and an Aerial Refuelling Boom System.
- KC-45A: United States Air Force designation for an A330 MRTT with two under-wing refuelling pods and an Aerial Refuelling Boom System, order cancelled.
- Voyager KC2: Royal Air Force designation for an A330 MRTT with two Cobham 905 under-wing pods, primarily used for refuelling fast jets.
- Voyager KC3: Royal Air Force designation for an A330 MRTT with two under-wing pods and a “Cobham Fuselage Refuelling Unit (FRU)” for a centreline refuelling capability, primarily used for refuelling large aircraft.
|Crew||3: 2 pilots, 1 AAR operator|
|Capacity||Various passenger configurations are available including 291 passengers (United Kingdom) and 8 military pallets + 1LD6 container + 1 LD3 container (lower deck cargo compartments)|
|Payload||45,000 kg (99,000 lb) non-fuel payload|
|Length||58.80 m (193 ft)|
|Wingspan||60.3 m (198 ft)|
|Heigh||17.4 m (57 ft)|
|Wing area||362 m2 (3,900 ft2)|
|Empty weight||125,000 kg (275,600 lb)|
|Max take off weight||233,000 kg (514,000 lb)|
|Power plant (Dry thrust)||2× Rolls-Royce Trent 772B, or General Electric CF6-80E1A4, or Pratt & Whitney PW 4170; turbofans, 320 kN (72,000 lbf) 320 kN each|
|Power plant (Thrust with afterburner)|
|Maximum speed (Sea level)|
|Maximum speed (High altitude)||880 km/h (475 knots, 547 mph)|
|Combat radius||1,800 km (972 nmi) with 50 tonnes of fuel for 4 hours|
|Ferry range||8,334 km (4,500 nmi)|
|Service ceiling||13,000 m (42,700 ft)|
|Rate of climb|
|Design load factor|
- Royal Australian Air Force – 7 KC-30A delivered
- Belgian Air Force – 1 A330 MRTT on order, to be owned by NATO as part of the Multinational Multi-Role Tanker Transport Fleet (MMF).
- Luftwaffe – 4 A330 MRTT on order, to be owned by NATO as part of the Multinational Multi-Role Tanker Transport Fleet (MMF).
- Royal Netherlands Air Force – 2 A330 MRTT ordered with 1 delivered. Both are to be owned by NATO as part of the Multinational Multi-Role Tanker Transport Fleet (MMF).
- Royal Norwegian Air Force – 1 A330 MRTT on order, to be owned by NATO as part of the Multinational Multi-Role Tanker Transport Fleet (MMF),
- Royal Saudi Air Force – 6 A330 MRTT delivered.
- Republic of Singapore Air Force – 6 A330 MRTT delivered,
- Republic of Korea Air Force – 4 A330 MRTT delivered.
- United Arab Emirates Air Force – 3 A330 MRTT delivered.
- UK Royal Air Force – 14 delivered (7 × KC2, 5 × KC3 + 2 fitted for KC3). Aircraft owned by AirTanker who operate or wet-lease out aircraft not required by RAF tasking.