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The AeroVironment RQ-11 Raven is a small hand-launched remote-controlled unmanned aerial vehicle (or SUAV)〔()〕 developed for the United States military, but now adopted by the military forces of many other countries. The RQ-11 Raven was originally introduced as the FQM-151 in 1999, but in 2002 developed into its current form,〔 〕 resembling an enlarged FAI class F1C free flight model aircraft in general appearance. The craft is launched by hand and powered by a pusher configuration electric motor. The plane can fly up to at altitudes of appx above ground level (AGL), and over above mean sea level (MSL), at flying speeds of 28–60 mph (45–97 km/h).〔(【引用サイトリンク】title=RQ-11 Raven )〕 ==Design and development== The Raven RQ-11B UAV system is manufactured by AeroVironment. It was the winner of the US Army's SUAV program in 2005, and went into Full-Rate Production (FRP) in 2006. Shortly afterwards, it was also adopted by the US Marines, and the US Air Force for their ongoing FPASS Program. It has also been adopted by the military forces of many other countries (see below). More than 19,000 Raven airframes have been delivered to customers worldwide to date. A new Digital Data Link-enabled version of Raven now in production for US Forces and allies has improved endurance, among many other improvements. The Raven can be either remotely controlled from the ground station or fly completely autonomous missions using GPS waypoint navigation. The UAV can be ordered to immediately return to its launch point simply by pressing a single command button. Standard mission payloads include CCD color video cameras and an infrared night vision camera. The RQ-11B Raven UAV weighs about 1.9 kg (4.2 lb), has a flight endurance of 60–90 minutes and an effective operational radius of approximately 10 km (6.2 miles). The RQ-11B Raven UAV is launched by hand, thrown into the air like a free flight model airplane. The Raven lands itself by auto-piloting to a pre-defined landing point and then performing a 45° slope (1 foot down for every 1 foot forward) controlled "Autoland" descent. The UAV can provide day or night aerial intelligence, surveillance, target acquisition, and reconnaissance. In mid-2015, the U.S. Marine Corps tested the Small Secure Data Link (SSDL), a device that fits onto a Raven's nose to provide beyond line-of-sight communications for Marines down to squad level. Acting as communications nodes for ground forces has become an important function for UAVs, but has been restricted to larger platforms like the RQ-4 Global Hawk or RQ-21 Blackjack. At just 25 cubic centimeters (3 inches by 5.3 inches by 1.6 inches) and weighing , the SSDL is the smallest, lightest, and lowest-power VHF/UHF software-defined radio certified, and allows the small Raven UAV to extend communications for troops in the field.〔(Data link lets even small UAVs serve as secure comm nodes ) – Defensesystems.com, 1 July 2015〕 In August 2015, selected units began receiving upgrades to their Raven sensors. The Raven Gimbal is a camera that replaces the fixed day or night camera that required moving the entire aircraft to look with a 360-degree gimbal with day and night settings that can switch between white hot, black hot, and color without landing and swapping sensors. The payload also replaces the stationary front camera with a single front-mounted lens.〔(Troopers receive new Raven UAS camera upgrade ) – Army.mil, 21 August 2015〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「AeroVironment RQ-11 Raven」の詳細全文を読む スポンサード リンク
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