translation 10 无人机.docx

Unmanned Aerial Vehicle(UAV)Anunmanned aerial vehicle(UAV), commonly known as adrone, is anaircraftwithout a humanpilotonboard. Its flight is either controlled autonomously by computers in the vehicle, or under theremote controlof a navigator, orpilot(in military UAVs called aCombat Systems Officeron UCAVs) on the ground or in another vehicle.There are a wide variety of drone shapes, sizes, configurations, and characteristics. Historically, UAVs were simple remotely pilotedaircraft, but autonomous control is increasingly being employed. Their largest use is withinmilitaryapplications. UAVs are also used in a small but growing number of civil applications, such asfirefightingor nonmilitary security work, such as surveillance of pipelines. UAVs are often preferred for missions that are too dull, dirty, or dangerous for manned aircraft.HistoryThe earliest attempt at a powered unmanned aerial vehicle wasA. M. Lows Aerial Target of 1916.Nikola Tesladescribed a fleet of unmanned aerial combat vehicles in 1915.A number ofremote-controlledairplane advances followed, including theHewitt-Sperry Automatic Airplane, during and afterWorld War I, including the first scale RPV (Remote Piloted Vehicle), developed by the film star andmodel airplaneenthusiastReginald Dennyin 1935.More were made in the technology rush duringWorld War II; these were used both to train antiaircraft gunners and to fly attack missions.Jet engineswere applied after World War II, in such types as theTeledyne RyanFirebee Iof 1951, while companies likeBeechcraftalso got in the game with theirModel 1001for theUnited States Navyin 1955.Nevertheless, they were little more than remote-controlled airplanes until theVietnam Era.The birth of U.S. UAVs (called RPVs at the time) began in 1959 whenUnited States Air Force(USAF) officers, concerned about losingpilotsover hostile territory, began planning for the use ofunmannedflights.This plan became intensified whenFrancis Gary Powersand his secretU-2were shot down over theSoviet Unionin 1960. Within days, the highlyclassifiedUAV program was launched under the code name of Red Wagon.The August 2 and August 4, 1964, clash in theTonkin Gulfbetween naval units of the U.S. and North Vietnamese Navy initiated Americas highly classified UAVs into their first combat missions of theVietnam War.When the Red Chineseshowed photographs of downed U.S. UAVs viaWide World Photos,the official U.S. response was, no comment.Only on February 26, 1973, during testimony before theUnited States House Committee on Appropriations, did the U.S. military officially confirm that they had been utilizing UAVs inSoutheast Asia(Vietnam).While over 5,000 U.S. airmen had been killed and over 1,000 more were either missing in action (MIA), or captured (prisoners of war/POW); the USAF100th Strategic Reconnaissance Winghad flown approximately 3,435 UAV missions during the war,at a cost of about 554 UAVs lost to all causes. In the words of USAFGeneralGeorge S. Brown, Commander,Air Force Systems Commandin 1972, The only reason we need (UAVs) is that we dont want to needlessly expend the man in the cockpit.Later that same year, GeneralJohn C. Meyer, Commander in Chief,Strategic Air Command, stated, we let the drone do the high-risk flying. the loss rate is high, but we are willing to risk more of them.they save lives! During the 1973Yom Kippur War, Syrian missile batteries in Lebanon caused heavy damage to Israelifighter jets. As a result, Israel developed the first modern UAV. Israel pioneered the use of UAVs for real-time surveillance, electronic warfare and decoys. The images and radar decoying provided by these UAVs helped Israel to completely neutralize the Syrianair defensesat the start of the1982 Lebanon War, resulting in no pilots downed. With the maturing and miniaturization of applicable technologies as seen in the 1980s and 1990s, interest in UAVs grew within the higher echelons of the U.S. military. In the 90s the U.S. Department of Defense began to buy UAVs from Israel. The Navy bought the Pioneer UAV, which is still in use. Many of these Israeli and newly developed U.S. UAVs were used in the 1991 Gulf War.UAVs were seen to offer the possibility of cheaper, more capable fighting machines that could be used without risk to aircrews. Initial gene