Return to current Issue
Back Issues (1-04, 2-04, 3-04, 4-04, 1-05)

 Topics & Features:

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

  RSS News Feed
 


 

 Relevant links:

  Miniature Aerial Vehicles

 

 MAV Links

  Bird-Eye 100
  Bird-Eye 500
  Casper 200
  Desert Hawk
  Dragon Eyes
  FanTail

  GoldenEye-50

  I-See

  iSTAR

  Orbiter
  Pointer

  Seagull

  Skylark

  Skylite

  Miniature EO Payload

  Zinc-Air Batteries

 


Miniature Aerial vehicles:
Propulsion and Energy Sources

< Most miniature UAVs are powered by electrical motors, which limit their endurance to 1 2 hours, enabled by the power density provided by the batteries carried on board. Although internal combustion (piston) engines could provide a good alternative, their noise signature, weight and reliability are not suitable for MAV applications. Current MAVs are using specially designed lithium primary batteries, while new high density zinc-air cells have also been introduced, to offer up to 33% higher density power compared to lithium batteries. Zinc-Air batteries are designed specifically for mini-UAV applications. Developmental items have already been tested with NASA on a micro-UAV, flying a 58 minute mission. Other designs are underway for micro UAVs such as IAI Mosquito, as part of an Israel's MOD R&D program. Future applications of DARPA's "palm power" power cells could also be applied to MAVs, offering extended range and endurance.

Other elements discussed in this article:

 


Search Defense Update:


ByGoogle

 


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

   Commentary


  Updated: 09/21/2005

   

 

2002-2005 All Rights Reserved

 Contact us - Advertise - Terms of use