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SH-60R
The Navy’s Helicopter Master Plan prescribes reducing the variety of operational helicopters in fleet service to one primary aircraft. Plans to remaanufacture and upgrade the current fleet of Sikorsky-built H-60 S Seahawks and to procure Sikorsky’s CH-60 utility helicopter are putting the Navy closer to a achieving that goal. Within the next two decades, anyone flying in a US Navy fleet helicopte will almost assuredly be flying one of two HH-60 versions -- the SH-60R or the CH-60. The Helicopter Master Plan calls for the remanufacture of SH-60B, SH-60F and HH-60H Seahawks into a common, more versatile SH-60R configuration that will meet Navy requirements through 2015. The SH-60R will combine the traditional mission areas of the SH-60B and SH-60F, but will be more capable. With the Navy’s helicopter antisubmarine (HS) and helicopter antisubmarine light (HSL) squadrons operating the same helicopter, opportunities for adjustments in the force structure will emerge, such as reducing the number of fleet readiness squadrons that support the SH-60 fleet. The distinction between the HS and HSL communities may even disappear altogether.
The SH-60(R) Multi-Mission Helicopter Upgrade (formally called LAMPS MK III Block II Upgrade) brings improvements to the SH-60 B/F helicopters now in the fleet. The SH-60R program will give Seahawks a life extension to 20,000 flight hours, to provide a multi-mission platform capable of conducting undersea and surface warfare for the next 20 to 25 years. This upgrade improves the capability of the LAMPS MK III Weapons System to provide battle group protection and to add significant capability in coastal littorals and regional conflicts. The SH-60R’s systems will be able to deal with high numbers of air and sea contacts in a confined space, in shallow water. It will operate with a carrier group, or with a surface action group, where no air cover is available. To fight and survive in this environment, detection systems will be added to the SH-60R that include a new multimode radar, FLIR sensor, ESM system and a retrievable, active, low-frequency sonar with significantly greater processing power.
Improvements include the addition of two stores stations, a data bus, advanced low-frequency sonar, acoustic processor, multimode radar, Forward-Looking Infrared (FLIR) sensor, upgraded ESM system and integrated self-defense system. The MAD gear will be deleted. Cockpit mission system improvements include the addition of an upgraded mission computer, improved communications suite, high-resolution displays, programmable keysets and tactical aids. The SH-60R will carry AGM-119 Penguin antishipping missiles and AGM-114 Hellfire anti-armor missiles, as well as the current MK 46 and MK 50 ASW torpedoes and a door-mounted 7.62 mm machine gun.
The Upgrade represents a significant avionics modification to the SH-60 series aircraft enhancing USW, ASUW, surveillance and ID and power projection, supporting the operational requirements of full-dimensional protection. The Upgrade develops the Airborne Low Frequency Sonar (ALFS) and increases sonobuoy and acoustic signal processing using the UYS-2A Enhanced Modular Signal Processor. In addition, the aircraft will employ a Multi-Mode Radar (MMR), (including Inverse Synthetic Aperture Radar (ISAR) and imaging and periscope detection modes), an ESM upgrade, and a fully automated self protection system. The improved electronics surveillance measures system (ESM) will enable passive detection and targeting of radar sources not currently detectable. The added multi-mode radar includes an inverse synthetic aperture radar mode (permits stand-off classification of hostile threats). Additionally, the aircraft will employ a Forward Looking Infrared (FLIR) sensor, with laser designator and capability to launch Hellfire missiles.
The Airborne Low Frequency Sonar (ALFS) and increased sonobuoy processing capability for the SH-60 helicopter will maintain and improve undersea warfare mission effectiveness against the quiet submarine threat in deep and shallow water environments. The ALFS project provides a dipping sonar with demonstrated capabilities typically 3 to 6 times (square miles of ocean searched per hour) the existing deep water capability. This improvement will significantly increase battle group and independent ship protection providing improved survivability and operating flexibility. ALFS provides longer detection ranges and a greater detection capability by using lower frequencies, less signal attenuation, longer pulse lengths, improved processing and increased transmission power. ALFS utilizes the Enhanced Modular Signal Processor, designated UYS-2A, for improved sonobuoy processing capability.
LAMPS MK III completed OPEVAL in February 1982 and was found to be effective and suitable. FOT&E which tested the LAMPS MK III Block I Upgrade was completed in 1993 with similar results. The Block II Upgrade entered EMD in FY93 and building on the Block I Baseline, includes major avionics modifications. The Navy plans to install this upgrade in former SH-60B, SH-60F or HH-60H airframes that have undergone "remanufacture" in the H-60 Service Life Extension Program (SLEP), the resultant aircraft to be designated a SH-60R.
Although the airframe itself is not new, the SH-60R program has considerable risk due to the reliability problems with ALFS, higher than expected false alarm rates on the Advanced Radar Detection and Discrimination (ARPDD) program of the MMR, anticipated additional problems with the MMR and incorporation of a new cockpit that will be common to the CH-60.
Remanufacture of the SH-60B fleet has started and will continue through FY 2009. Remanufacture of the SH-60F and HH-60H fleets will begin in FY 2004 and continue through FY 2012. Lockheed Martin is the prime contractor for low-rate initial production of four SH-60Rs, with Sikorsky as major subcontractor. The SH-60R is scheduled to reach operational capability in 2002. |
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