The helicopter is not carrying any weight, just those big but light training feet.
The first picture is interesting. What is under the wings.
I don't know. But it's a USMC photo of a Defense Advanced Research Agency project, so it could be either something noisy or snoopy. Of course the Composition B explosive filler charge of an M67 fragmentation grenade is only 6.6 ounces, and the weight of a M15 white phosphorous grenade is but 31 ounces.
Remember my comment was about "useful" explosives, in the content of a military attack. Just scaring people with big firecrackers would not do it.
During WWII, the British SAS fiound that their standard 8-pound demolition charge was a bit inconvenient for raiding parties going onto Afrika Corps airfields and leaving them on the aircraft. While that was acceptable for a single or double charge against a fuel storage tank, the presence of dozens of aircraft made such attacks by small groups impractical unless a smaller yet equally effective charge could be compounded. It was.
Sapper Jock Lewis came up with a pound-and-a-half demo charge that was both explosive and incendiary, powerful enough to rupture an aircraft's fuel tanks and ignite the fuel spread by the explosion. It was easy enough for a stealthy raider to carry a couple of dozen of the charges with timers, plant the things, then hopefully be on their way before the first signalled that the ball had begun.
Though the R/C aircraft-delivered devices described in the article could certainly be used in either that fashion or for use against POL storage tanks that have so far resisted several terrorist explosive attacks, the use of a grenade-sized warhead could also be used against a crowd at a synagogue or political event- a Likud rally, perhaps. Neither should the idea that one might be used as a follow-on *gotcha* attack following a suicide bomber event, in hopes of killing emergency rescue workers and ambulance personnel.
But I suspect that the real value of small R/C aircraft such as the one pictured will be to train rookie pilots, who'll then go on to operate larger remotely piloted aircraft. And I'd expect that fitting the 2-kilogram warhead of a PG-7 antitank rocket for the RPG-7 launcher could be done without too much difficulty to a slightly larger aircraft once the pilot had learned how to control a smaller one- which could make life difficult for both Merkava tank crews and officials in armoured limosines.
