Israel is spending $50 million to buy new models of the Hermes 900 UAV. This is a follow on to a 2007 order for $30 million worth of similar Hermes 450s. Last year, Israeli aircraft manufacturer Elbit conducted the first flight test of its Hermes 900 UAV. This vehicle is similar in size (and appearance) to the American Predator (both weighing about a ton), but the Israeli vehicle is built mainly for endurance. It has a 10 meter (31 foot) wingspan. The Hermes can stay in the air for 36 hours, and has a payload of 650 pounds (300kg). This means that, with its cruising speed of 125 kilometers an hour, the Hermes 900 has a max range of 4,500 kilometers. Thus the Hermes 900 could fly to Iran (1,500 kilometers distant), do some reconnaissance, and return. Although the 900 has a quiet engine, it is fairly visible, even at its highest altitude (nearly 10,000 meters/30,000 feet). So a trip to Iran and back is unlikely, even if it is quite possible.
The Hermes 900 is basically a stretched and bulked up Hermes 450, which is a 450 kg (992 pound) aircraft, with a payload of 150 kg. It can also carry Hellfire missiles. The Hermes 450 is 6.5 meters (20 feet long) and a 11.3 meter (35 foot) wingspan. It can stay in the air for up to 20 hours per sortie, and fly as high as 6,500 meters (20,000 feet). The Hermes 450 is the primary UAV for the Israeli armed forces.