|ASN-104/105 Unmanned Reconnaissance Aerial Vehicle
Date:2010-02-06 Source:internet By:globalmil Viewed:
ASN-104 (D-4) unmanned aerial vehicle (Chinese Internet).
The ASN-104 (also known as D-4) tactical unmanned reconnaissance aerial vehicle (URAV) was developed by Xi'an ASN Technology Group Company, a commercial company of the Northwest Polytechnic University (NPU) in early 1980s. The ASN-105 is an improved variant introduced in the early 1990s. The ASN-104/105 was the first generation indigenous tactical URAV in service with the PLA, designed for battlefield reconnaissance, day/night surveillance, border patrol, artillery spotting, and aerial photography and prospecting roles.
NPU began to develop a lightweight tactical battlefield surveillance UAV in the early 1980s. The resulted D-4 (ASN-104) made its first flight in October 1983 and entered batch production in 1985. The D-4 was designed for military reconnaissance and civil aerial photographic survey. The onboard optical and night vision cameras can provide real-time TV images of the battlefield within 60km range. The ASN-105 was developed in the mid-1980s based on the ASN-104, but with an extended range of 100km and an improved ground control system.
The ASN-104 has high-mounted wings, slightly tapered from roots to tips. The ASN-105’s wings are high-mounted, straight to the midsection, and tapered from mid-wing to tips. The engine is a single, prop-driven engine in the nose section. The fuselage is round and tapers to front and rear, with fixed landing pads. The tail flats are high-mounted on the body and equally tapered. The fin is equally tapered.
The ASN-104/105 is powered by a HS-510 four cylinder dual ignition air cooled piston engine with a power rating of 22kw. The engine uses ordinary automobile fuel.
A complete UAV system comprises six UAVs and a ground control station. The ground control station consists of a command & control vehicle, a mobile control vehicle, a mobile photo processing vehicle, and a mobile television image processing vehicle. The UAV is launched by rocket boosters from a mobile launcher, and recovered by parachute. The UAV is fitted with an under-fuselage impact absorbing device to minimise the damage caused during recovering.
The UAV is fitted with an aerial photographic camera and a television imaging system with night vision channel. The imagery intelligence can be transmitted to the ground station in real-time, or stored in data storage devices. In a typical mission, the photographic camera can cover an area of up to 1,700 square kilometres. The size of the photo is 18cm X 18cm. Later variants could carry night vision devices and CCD cameras.
The ground station of the ASN-104 includes the radio tracking system, radio remote-control system, radio positioning and television image processing equipment. Each control station has two crewmembers: a navigator/commander and a UAV controller. If necessary, the radio tracking and remote-controlling systems can be disintegrated from the command and control vehicle and become man-portable. The aerial photographic photos and television images are processed in the mobile photo processing vehicle (dark room) and the mobile television image processing vehicle respectively.
The ground control station of the ASN-105 system (Source: Chinese Internet).
The ASN-105 has an integrated radio tracking/remote-controlling system which can perform the tracking and controlling of the UAVs. The system is fully computerised. The UAV can fly according to the pre-programmed autopilot, and can be switched into remote-controlling mode at any stage of the flight. The system can be assisted by a tripod-mounted signal relay system, which can be carried by crewmembers in the mountain regions to receive and re-send the image signals.
Weight: Max take-off 140kg; Max mission payload 30kg
Speed: Max 250km/h; Cruising 150km/h
Flight endurance: 2 hours
Service ceiling: 3,200m
Remote control distance: 60km (ASN-104), 100km (ASN-105)
翼展： 4.3 米
机长： 3.32 米
机高： 0.93 米
重量： 最大起飞140 公斤；最大任务负载30 公斤
速度: 最大 250 公里/小时；巡航 150 公里/小时
航程： 300 公里
续飞力： 2 小时
升限： 3,200 米
遥控距离： 60 公里（ASN-104），100 公里（ASN-105）
Last update: 1 February 2009
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