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Military


Mine Resistant Ambush Protected (MRAP) II Enhanced Vehicle Program

Requirements

The MRAP II Request for Proposals (RFP) included a detailed examination of the required performance specifications. Requirements specified were defined in terms of thresholds (T) and objectives (O). Vehicle performance requirements would be met with the vehicles loaded to their gross vehicle weight (GVW). All categories, in any configuration, would be capable of operating on primary and secondary roads, off-road, on trails, and would meet all mobility parameters of this specification and all prescribed environments. The vehicle would also meet all Federal Guidelines called for in the RFP specifications of the time frame for on-road and highway operation.

Unless otherwise specified, vehicle performance requirements were with vehicles loaded to their gross vehicle weight (GVW). All requirements would be met using JP-8 (T).

All categories would have to successfully perform all operations in tropical, temperate, and desert climates (T) and arctic (O), and in geographical areas that included sand, grassland, forest, urban areas, snow and ice, mountain, and salt water (T) swamp, tundra, and jungle (O). All categories would have to successfully perform all operations in the following environmental conditions: rain, snow, hail, ice, fog, dust, sand, high humidity, solar radiation, and extreme temperatures (T).

The MRAP II vehicle shall be capable of efficiently completing its mission utilizing three variants:

  • Category-1 (6 persons (T) or more than 6 persons including driver(O) )
  • Category-2 (10 persons (T) or more than 10 persons including driver(O) )
  • Category- 3 (6 persons (T) or more than 6 persons including driver(O) )

For planning the weight requirement the RFP outlined a weight of 363 lbs per person. MRAP II vehicles were also to be re-configurable to accommodate 1 litter by 2 members of crew with on board (BII) tools in less than 10 minutes (T). MRAP II vehicle would be re-configurable to accommodate 2 litter by 2 members of crew with on board (BII) tools in less than 5 minutes (O).

All vehicles and systems/components should be capable of operating in the temperature range of -25F to 130F using standard petroleum, oil and lubricants (POLs) and without the use of kits or additional operator procedures (T).

The MRAP II vehicles would have to be capable of protecting the crew against threats as specified (T). The exact details of the threats were contained in a classified annex to the RFP's requirements (Annex A), but were known to include protection against Explosively Formed Penetrators (EFPs), as a result of operational experience during Operation Iraqi Freedom. MRAP II vehicles would have sufficient ballistic resiliency to prevent catastrophic destruction (defined as 65% of the economical value of the vehicle) to the vehicle when attacked by any one threshold threat in the Classified Annex A (T).

Also to be address in by the MRAP II were a number of issues that came to light with initial MRAP II vehicles concerning mobility in a variety of enviornments. MRAP II vehicles would be able to ascend a paved surface with a 40% grade at a speed of 10 mph (T) and ascend a paved surface with 60% longitudinal grade at a minimum of 2 Miles per Hour (MPH) in both forward and reverse without loss of stability and no wheel lift off (T). The vehicles would also be able to ascend a grade of 5% at 45 mph in a forward direction on a paved surface (T). All categories would be able to traverse a 30% paved surface side slope at a speed of 5 MPH (8 KPH) while executing a sinusoidal maneuver with no tire lift (T). All vehicles in forward and reverse gear would be able to ascend and descend a 14 inch (T) and 18 inch (O) vertical step at oblique angles from zero up to +/- 30o.

All Categories would be able to sustain a forward speed of greater than or equal to 65 mph on a paved road with a 0 % grade (T), of sustained off-road speeds (RMS = 1.5 to 4.8 inches) of no less than 5 mph (T), and of sustained road speeds over trails (RMS = 1.0 to 3.4 inches) of no less than 25 mph (T). Acceleration from 0 mph to 30 mph was required to be less than or equal to 15 seconds, while acceleration from 0 to 55 mph was required to be less than or equal to 45 seconds. MRAP IIs would be capable of operating on fuel carried in integral fuel tanks for a distance equal to or greater than 300 (T) 400 (O) statute miles, at an average speed of 45 mph on a hard level surface.

All vehicles were required to be capable of hard bottom fording in fresh and salt water to depths of at least 36 inches, including wave height, at current speeds up to five mph, without special preparation or kits (T). When fording, the engine would be capable of restarting after being stopped for 3 minutes and then operated for an additional 15 minutes (T).

The MRAP II vehicle would be capable of being transported in C-17 and C-5 aircraft (T) C-130 aircraft (O) in accordance with MIL STD 1366 as described in MIL HDBK 1791. The vehicle design would enable preparation for fixed wing air transport, and re-assembly after, to be accomplished in not more than 60 minutes using only onboard tools (O).

The basic weaponry requirement was a manned turret, similar to models used on existing MRAP IIs and up-armored HMMWVs. This weapon's station would be capable of being fitted with the M2 .50 caliber machine gun, M240 7.62mm machine gun, the M249 5.56mm squad automatic weapon, and Mk 19 Mod 3 40mm automatic grenade launcher. A requirement also existed for the capability to mount a TOW/ITAS anti-tank missile launcher and the CROWS Remote Weapon Station (RWS). Fire suppression and NBC protection equipment would also be standard, as would a suite of necessary electronic equipment including air conditioning and radios. These included the VIC-3 vehicle intercom system, VRC-103 UHF SATCOM radio, VRC-104 HF radio, VRC-110 Multi Band Radio, and VRC-111 Multiband Inter/Intra Team radio.




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