Quote from
www.rctoys.com :
[
Payloads and the Draganflyer IV
The standard battery for the Draganflyer IV is the 3-cell 2100mah lithium- polymer. This battery was able to carry a payload of 4 ounces while maintaining stable and useable flight. It lifted a payload of 11 ounces off the ground a few inches, and is not controllable. Between 4 and 11 ounces the helicopter becomes less and less stable, as the rotors become unable to provide the added thrust that the gyros utilize to maintain stability.]
The camera from rctoys weights 9 grams so no problem for lifting it but I don't know how muche weight military explosives...
It's range is about 300m but their are lots of 1.2/2.4 GHz emmetors that have a range form 3 to 4 miles and some IR cameras who can film by night...
The 4 rotor aircraft is a pretty good model for an UAV. The draganflyer IV the best commercial 4 rotor aircraft I've seen but it's true that military operations need perfect qualit and the wind may make it unstable.
rctoys says that their draganflyer is "virtually indestructible" but check this post : [link=http://www.rcuniverse.com/forum/m_1258560/mpage_1/key_draganflyer/anchor/tm.htm#1258560]Draganfly iv. Anyone flew it?Control? [/link]
May that help you...