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Alleged Iranian UAV captured by Israel is 'copy' of US' Sentinel UAV by Staff Writers Moscow (Sputnik) Feb 13, 2018
A drone captured by the Israeli Air Force over the weekend, which Israel claims belongs to Iran, is essentially a "copy" of a Lockheed Martin Sentinel drone made for the US Air Force and Central Intelligence Agency that was shot down in Iranian skies in 2011 by Iranian forces. "It's a copy of a similar system that fell in Iran," Israeli Brig. Gen. Tomer Bar told Defense News Monday. "They more or less duplicated it." The IDF reportedly launched yet another series of missile attacks on Syrian soil February 7. A few days later, the Israeli Defense Forces said they had downed an Iranian drone and carried out attacks on Iranian targets in Syria. Syrian forces defended their territory by downing an Israeli F-16, forcing the pilots to eject. The Kremlin has called on both sides to de-escalate the situation "in favor of avoiding any steps that could lead to a new round of dangerous confrontations in the region." When Israel said that an Iranian drone had been intercepted over Israeli airspace, Tehran denied that any of its military equipment was even in the area. "Reports of downing an Iranian drone flying over Israel and also Iran's involvement in attacking an Israeli jet are so ridiculous... Iran only provides military advice to Syria," Iran Foreign Ministry spokesman Bahram Qasemi said February 10. According to an expert at the Fisher Brothers Institute for Air and Space Strategic Studies, it certainly would have been within Tehran's capability to have a Sentinel-like unmanned aerial vehicle operating in the region. "There are two copies that Iran made out of the [Sentinel]. One is Shahed 171, and this is supposed to be jet powered and for reconnaissance missions. Then there is the other variant of this vehicle - similar in design to RQ-170, with a piston engine and a propeller - named Saeqeh. This variant was shown in 2016 armed with four laser-guided munitions," said Tal Inbar, director of UAV studies at the institute. The drone identified by the IAF general was said to be a Shahed 171 aircraft. Source: Sputnik News
Improving drone performance in headwinds Sendai, Japan (SPX) Feb 12, 2018 Is it a bird? Is it a plane? The prevalence of multi-rotor drones has increased dramatically in recent years, but in headwinds they pitch upwards unpredictably. Engineers from Tohoku University, Japan, have shown that angling the rotor blades of a quad-rotor unmanned aerial vehicles by just 20 degrees can reduce pitching by a quarter. Their work is published in the International Journal of Micro Air Vehicles. Multi-rotors have gotten much smaller since the turn of the century, and they have many u ... read more
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