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|Allison Broadens Onboard Electrical Power Development for Army|
New project with Leonardo DRS will power THAAD missile launcher trucks
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The OBVP system is intended for a heavier class of military vehicle – the 44-ton Oshkosh Heavy Expanded Mobility Tactical Truck (HEMTT) equipped with Terminal High Altitude Area Defense (THAAD) anti-ballistic missile launchers. OBVP will improve agility and reduce logistics costs because the vehicle will no longer have to be equipped with an external or trailered generator. (Photo: Oshkosh Defense)
The latest collaboration involves a heavier class of military vehicles – the 44-ton Oshkosh Heavy Expanded Mobility Tactical Truck (HEMTT) equipped with Terminal High Altitude Area Defense (THAAD) anti-ballistic missile launchers.
A generator will be fully integrated within the housing of an Allison 4500 Specialty Series™ transmission and installed into the HEMTT's driveline in its original configuration, without affecting vehicle functionality. In fact, the OBVP will improve agility and reduce logistics costs because the vehicle will no longer have to be equipped with a separate generator. In addition, the OBVP is intended to improve mean time between mission failures.
Allison expects to complete the first 4500SP Series with OBVP capability in 2020. When matched with Leonardo DRS power electronics, the system has the capability to produce electrical power for use on- or off-board the vehicle – up to 120 kW when the vehicle is stationary. More significantly, unlike towed generators, the system will be able to provide power – up to 55 kW – while the vehicle is on the move.
"An OBVP system will give THAAD air defense operators continuous access
to electrical power directly from the transmission without interruption.
This capability will enhance soldier effectiveness and unit readiness,"
The OBVP system is compatible with the Department of Defense's objective
of evolving from conducting operations from forward positioned bases,
The need for onboard electric power has grown as military vehicles are equipped with more sophisticated electronics including computers, air defense radar and directed energy weaponry.
"The electrical loads on vehicles have increased dramatically. It's
getting more and more difficult to produce that level of power with an
engine-driven generator/alternator. Allison is proud to be partnered
with Leonardo DRS in the development of OBVP technology that will result
in innovative and adaptive propulsion solutions that provide
capabilities not available today," said
Vehicles using OBVP technology consumed 23 percent less fuel than those
using a Quiet Tactical Generator, according to a 2016 study by the
Allison and Leonardo DRS are exploring OBVP uses throughout the full range of wheeled and tracked vehicles. In recent years, the companies have been collaborating on an OBVP system based on the Allison 3200SP™ transmission for the Family of Medium Tactical Vehicles (FMTV), which travel in support of the larger, heavy-class THAAD launcher vehicles.
The OBVP systems being demonstrated by Leonardo DRS and Allison also have potential uses off the battlefield. State and local emergency response agencies could use such systems during natural disasters to power emergency shelters, for example. When daisy chained, such systems could power hospitals, senior citizen homes, water purification plants or other vital infrastructure.
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