Return to current Issue
Back Issues: 1-04, 2-04, 3-04, 4-04,
1-05, 2-05, 3-05, 1-06

 Topics & Features:

  Armored Fighting Vehicles
  C4ISR / Wireless Networking
  Combat Aircraft
  Electronic Warfare
  Fire Support
  Future Combat Systems
  Homeland Defense
  Infantry / Urban Warfare
  Logistics & support
  Naval Systems
  Net Centric Warfare
  Precision Strike
  Protection & Survivability
  Spec-Ops, Counter Terror
  Training and Simulation
  Unmanned Systems
  Defense Exhibitions

  RSS News Feed

Related Links:

Search Defense Update:

ByGoogle

 

   Become a member
   Advertise on this page
   Send suggestions...

   Commentary




Military Applications of
Hybrid Cars and Trucks

 page 1 out of 6 >

With surging fuel prices military forces are re-examining the potential savings of alternative propulsion, hybrid cars and trucks are becoming a reality in the commercial market. "Hybrid-Electric Drive" (HED) systems are promising up to 30 – 40 percent savings, compared to current internal-combustion engines. Typical Hybrid-Electric Drive (HED) systems store regenerative power when braking and using it for acceleration and off-road maneuvering, to augment the main engine. By electronically controlling each wheel, HED systems dynamically manage the drive torque going to each wheel; accommodating any driving condition on and off-road. While HED systems have great benefits in fuel economy, improved performance and weight saving, hybrid cars still challenge users with expensive systems, primarily battery costs and sensitivity due to environmental effects.

The US Army expects hybrid-electric powered trucks and the hybrid-electric Future Combat Systems (FCS) to help the service attain its stated objective of 75 percent lower fuel consumption by 2020. Significant savings have already been demonstrated. Operating as a hybrid, with a 24-gallon tank, a truck could travel 375 miles without refueling compared to a conventionally-powered vehicle, traveling less than 60% of that range. Savings will not relate from the cost of fuel itself, but trim a considerable volume off the army logistical transportation requirements – as fuel takes up about 70 percent of the logistical tonnage haul in a heavy armored division.

When used in combat vehicles, hybrid-electric drives have even more benefits. The acoustic signature can be reduced by moving on electrical power with main engine shut off and the placement of engine exhaust below the vehicle, to minimizing noise signature when the engine is running. Thermal signature is reduced by burying the hot mufflers and manifolds deeper in the vehicle to reduce infrared signatures. When used for logistical support, hybrid electric vehicles can generate enough “exportable” power to run most field equipment currently used by the military.
 

  - Next

  Updated: 05/20/2006

Site Map

 

 

© 2002-2005 All Rights Reserved

 About us - Advertise - Terms of use