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Boeing 737 MMA


Boeing 737 MMA

Anti-submarine warfare, anti-surface warfare aircraft

Country (Land)

Manufacturer (Hersteller)
Boeing Integrated Defense Systems
St. Louis, Missouri

General (Allgemeine Angaben)
Crew (Besatzung): 2 in the cockpit plus operators in the cabin. There are five display consoles.

Power plant (Antrieb): 2 x CFM International CFM56-7B27A turbofans under wing
Thrust (Schub): 2 x 120 kN (27000 lbs)

Dimensions (Abmessungen)
Length (Länge): 38,53 m
Height (Höhe): 12,83 m
Span (Spannweite): 35,79 m

Cabin width (Kabinenbreite): 3,48 m
Cabin height (Kabinenhöhe): 2,13 m

Weights (Massen)
Weapons load (Waffenzuladung): 5670 kg (including sonobuoys)
Fuel (Kraftstoff): 34095 kg
Max. Zero fuel weight (Max. Masse ohne Kraftstoff): 66500 kg
Max. ramp weight (Max. Rollmasse): 83780 kg

Performance (Flugleistungen)
Top speed (Höchsgeschwindigkeit): Mach 0.82
Max. cruise speed (max. Reisegeschwindigkeit): Mach 0.785 / about 910 km/h
Cruise speed for max. range: 815 km/h
Loiter speed (Patrouillengeschwindigkeit): 333 km/h (180 kts) at low level
Max. cruise altitude (Dienstgipfelhöhe): 41000 ft (12500 m)
Descent rate (Sinkflug): more than 50 m/s down to 1000 ft (330 m)
Range (Reichweite):
   nearly 9250 km (5000 NM) self deployment (Überführungsreichweite)
Radius of action (Einsatzradius): more than 2400 km (1300 NM) with more than four hours on station.

Customers (Kunden)
Boeing will build seven prototypes during the SDD phase.
Plans call for up to 109 aircraft to be purchased by the Navy to replace its aging fleet of 223 P-3 aircraft, it was said at contract award in June 2004.
15 to 20 more MMAs could be needed if the requirement to replace the EP-3E Aries II is added again to the project. For now, this should be covered by a maritime version of the US Army´s Aerical Common Sensor programme.

Costs (Kosten)
The MMA System Development and Demonstration (SDD) is valued at 3,9 billion Dollars (exactly 3889979744 in a cost-plus-award-fee deal), it was said on 14 June 2004 at 5 pm.
The total program estimated value is approximately $15 billion over a 10-year production run, Boeing said at contract award

Competition (Konkurrenz)
Lockheed Martin Orion21

Remarks (Bemerkungen)
The Boeing 737 MMA is part of the new-generation 737-family. Modifications for the role of anti-submarine warfare and anti-surface warfare include:
  • Search radar in the nose
  • Crew rest area
  • 2 observer stations
  • 5 mission tactical workstations with room for growth (Boeing claims 23 pre cent more floor space than P-3). Boeing plans to fit fully open-architecture systems based on the Nimrod MRA 4 concepts.
  • MAD in the tail
  • 2 sonobuoy storage racks and 3 automated rotary launchers
  • weapons bay aft of the wingbox
  • 4 wing pylons for external stores
  • Improved ECS for increased electronics MTBF
As part of its efforts to win the MMA competition, Boeing formed an industry team with four partners:
  • - CFM International, a 50/50 joint company of General Electric USA, and Snecma, France, provides the CFM56 military engines that power the Boeing 737 MMA. They feature 180 kVA generators.
  • - Northrop Grumman's Baltimore-based Electronic Systems sector will provide the electro-optical/infrared (EO/IR) sensor, the directional infrared countermeasures system, and the electronic support measures system. Northrop Grumman's Information Technology sector, based in Herndon, Va., will develop data links for MMA.
  • - Raytheon will provide the APS-137 Maritime Surveillance Radar and Signals Intelligence (SIGINT) solutions. Raytheon is also offering its revolutionary GPS Anti-Jam, Integrated Friend or Foe, and Towed Decoy Self-Protection Suites, and the aircraft's Broadcast Info System (BIS) and UHF Satcom capability.
  • - Smiths Aerospace supplies both the Flight Management and Stores Management systems on the Boeing 737 MMA.
The MMA program will employ about 1,600 people at IDS facilities in St. Louis, Seattle and Patuxent River, Md.

History (Geschichte)
The MMA program began with a so called Milestone 0 decision by the Defense Acquisition Board on 22 March 2000, because of the need to fill the void that will be created by the retirement of fatigued P-3Cs. Navy officials first began by planning to extend the life of the P-3Cs, but, after a cost/benefit/risk analysis, the structural renewal process involved in a service life extension program proved to be less cost-effective and more risky than other options – including manufacturing a new, more technologically advanced P-3 or using a derivative of other existing airframes.
Boeing unveiled its proposal for the US Navy MMA at the Navy League Sea-Air-Space 2000 exposition in Washington D.C. on 18 – 20 April 2000. At that time, it was based on the 737-700 fuselage combined with the stronger –800 wing, offering a 77635 kg take-off weight.
An analysis of alternatives (AoA) study was conducted by the Navy in 2000. In support of the AoA, industry concept studies were made from June 2000 to January 2001 (contract award on 10 June). Participants were:
  - Lockheed Martin: Remanufactured P-3
  - Raytheon: Remanufactured P-3
  - Boeing: 737 derivative concept
  - Northrop Grumman: Global Hawk UAV adjunct
In January 2001, the Secretary of the Navy accelerated the MMA program by three-to-five years to attain IOC in the Fiscal Year 2010 to 2012 timeframe, thereby obviating a service life extension for the P-3s.
The MMA Acquisition Strategy was approved and signed by Mr. Aldridge, Under Secretary of Defense for Acquisition, Technology and Logistics on 8 February 2002. A pre-solicitation conference was then held on 7 February and CAD proposals sought in March.
After BAE System withdrew its proposal, the US Navy awarded Component Advanced Development Phase I contracts to Boeing (737) and Lockheed Martin (Orion21) on 10 September 2002. They were valued at almost 7 million US-Dollars each.
During the five-month Phase I effort to February 2003, Boeing and Lockheed Martin validated risk mitigations for their concepts via modelling and simulation. They defined and selected system architecture, refined systems requirements and developed Milestone-B acquisition documentation.
During the fourth quarter of 2002, Boeing took a 737-700 BBJ on a nine-stop, 17-day tour of the US to expose the Navy to the 737, and demonstrated its manoeuvrability and suitability for the MMA mission. At each station, Navy pilots flew the 737. In addition, Boeing took the 737 to three US and allied military bases in Europe
The contract for CAD Phase II was awarded in February 2003. It was planned to last about 11 months at first, but was later extended to 14 and then to 15 months to the end of April 2004. In the case of Boeing it had a value of 20,5 million US-Dollars. During this phase, Boeing developed and demonstrated key features of the mission systems architecture, software, displays and sensors, along with additional air vehicle performance analyses.
A draft RFP for systems development and demonstration (SDD) was released on 15 July 2003.
On 28 October 2003, the NAVAIR Maritime Surveillance Aircraft Programme office (PMA 290) released a request for proposal (RFP) for the MMA. Before that, on 30 September, a Performance Based Specification was completed as the most significant part of the RFP.
On 13 November 2003, Boeing announced that CFM International, Northrop Grumman, Raytheon and Smiths Aerospace had joined forces to form an MMA industry team. The aim would be to “provide the most affordable and effective multi-mission aircraft possible”, said Jack Zerr, MMA programme manager.
In December 2003, Boeing reported that a 737 BBJ2 with two functional mission system consoles had completed a coast-to-coast tour of US Navy bases (NAS Brunswick, Jacksonville, Norfolk, Kaneohe and Whidbey Island). Highlights of the flights included a maximum power takeoff and climb to 41000 ft, manual reversion maneuvers (no hydraulics), tactical maneuvring at 200 ft, simulated single engine maneuvers and landings in less than 2000 ft.
The US Navy planed to award a single contract for MMA System Development and Demonstration (SDD) in early 2004. That date has slipped a bit due to a “strategic pause” to incorporate Task Force ASW recommendations. An Acquisition Review board Meeting was held at Patuxent River on 11 March 2004, and announcement of the MMA competition winner was then expected for 28 May 2004.
The MMA winner was finally revealed by the Pentagon on 14 June 2004, with the Boeing-led team taking the $3.89 billion development contract. The Boeing team, which includes CFM International, Northrop Grumman, Raytheon, and Smiths Aerospace will produce seven test aircraft during the program's System Development and Demonstration (SDD) phase.
Plans call for up to 109 aircraft to be purchased by the Navy to replace its aging fleet of 223 P-3 aircraft.
In 2003, planning indicated an initial operational capability with 22 aircraft between the FY10-FY12 timeframe. As of March 2004, an IOC date of 2013 was given by NAVAIR. Notional planning foresees a first flight in 2009.

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Last updated 17 June 2004
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