| 词条 | BAE Systems SkyEye | ||||||||||||||||
| 释义 |
The BAE Systems SkyEye is a reconnaissance UAV developed in the United States in the early 1970s by Developmental Sciences Inc, later called Developmental Sciences Corporation, a division of Lear Astronics Corporation and ultimately part of BAE Systems. Developmental Sciences Inc was one of the first US companies to investigate battlefield UAVs, flying the first prototype of the SkyEye series in 1973, leading to the first flight of the improved R4E variant in 1981. The R4E has been continuously refined since then in a sequence of subvariants. The R4E SkyEye is in service with a number of countries, including Egypt and Morocco, for battlefield surveillance, and has also been used commercially for pesticide spraying. Apparently a few stock R4Es were also purchased by the US Army's South Command in Latin America and used for border patrols. The US Army had also considered a variant of it, the McDonnell Douglas Sky Owl, for the short-range UAV competition. As the Sky Owl, McDonnell Douglas leveraged it into the company's proposal for the Army competition, but apparently it proved generally inferior to the RQ-5 Hunter. The SkyEye has the common pusher-propeller twin-tailboom configuration, but it has distinctive slightly swept wings and antennas on top of the tailplanes. It is powered by a UAV Engines Limited (UEL) 39 kW (52 hp) rotary engine. The SkyEye can carry two underwing stores along with its other payload. It lands on a retractable centerline skid or can be recovered by parachute. Specifications (R4E SkyEye){{aerospecs|ref= |met or eng?=eng |crew=None |capacity=180 lb (82 kg) payload |length m=4.10 |length ft=13 |length in=5 |span m=7.32 |span ft=24 |span in=0 |swept m= |swept ft= |swept in= |rot number= |rot dia m= |rot dia ft= |rot dia in= |dia m= |dia ft= |dia in= |width m= |width ft= |width in= |height m= |height ft= |height in= |wing area sqm= |wing area sqft= |swept area sqm= |swept area sqft= |rot area sqm= |rot area sqft= |volume m3= |volume ft3= |aspect ratio= |empty weight kg= |empty weight lb= |gross weight kg=570 |gross weight lb=1,250 |lift kg= |lift lb= |eng1 number=1 |eng1 type=UEL |eng1 kw=39 |eng1 hp=52 |eng1 kn= |eng1 lbf= |eng1 kn-ab= |eng1 lbf-ab= |eng2 number= |eng2 type= |eng2 kw= |eng2 hp= |eng2 kn= |eng2 lbf= |eng2 kn-ab= |eng2 lbf-ab= |max speed kmh=200 |max speed mph=125 |max speed mach= |cruise speed kmh= |cruise speed mph= |range km= |range miles= |endurance h= >8 |endurance min= |ceiling m=4,600 |ceiling ft=15,000 |glide ratio= |climb rate ms= |climb rate ftmin= |sink rate ms= |sink rate ftmin= |armament1= |armament2= |armament3= |armament4= |armament5= |armament6= }}{{aircontent |see also= |related= |similar aircraft= |lists= }} ReferencesThis article contains material that originally came from the web article [https://web.archive.org/web/20110902194407/http://www.vectorsite.net/twuav.html Unmanned Aerial Vehicles] by Greg Goebel, which exists in the Public Domain. External links
5 : United States military reconnaissance aircraft 1970–1979|Unmanned aerial vehicles of the United States|British Aerospace aircraft|Single-engined pusher aircraft|Twin-boom aircraft |
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