Northrop BQM-74 Chukar
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BQM-74 Chukar | |
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Role | Unmanned Aerial Vehicle
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Manufacturer | Northrop |
First flight | 1965 |
Introduction | 1968, U.S. Navy
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The BQM-74 Chukar is a series of aerial target drones produced by Northrop. The Chukar has gone through three major revisions, including the initial MQM-74A Chukar I, the MQM-74C Chukar II, and the BQM-74C Chukar III. They are recoverable, remote controlled, subsonic aerial target, capable of speeds up to Mach 0.86 and altitudes from 30 to 40,000 ft (10 to 12,000 m).
Description
The BQM-74E is propelled during flight by a single
Drones are capable of being recovered following a training exercise. A parachute is deployed by remote control or if the remote control link is severed and a flotation kit can be added for sea-based recovery. If recovery of the drone is required, special telemetry warheads are used on the defensive missile in place of explosives. This telemetry warhead is desirable since it allows for extensive analysis of the performance of the defensive missile, including miss distance information that determines if a real warhead would have damaged the target. A direct hit would likely destroy the drone. Gunnery systems would use non-explosive dummy munitions. Since gunnery systems are aimed in front of a moving target so it will fly through the blast-fragments, dummy munitions do not have to directly hit a target. Analysis of radar data would determine if actual explosive munitions would have damaged the target drone.
Development
MQM-74A Chukar I
The Chukar series began in the early 1960s with a
The MQM-74A had a neatly tapered cigar-shaped fuselage, straight mid-mounted wings, an underslung jet engine with the intake under the wings, and a conventional tail configuration with the tailplanes set in an inverted vee. It was powered by a Williams International WR24-6 turbojet engine with a thrust of 121 pounds (538 N), and was launched by RATO booster from the ground or a ship. The Navy purchased 1,800 MQM-74A Chukar Is. Several hundred more were purchased in total by NATO for a multinational test range on the island of Crete, as well as the Royal Navy and the Italian Navy.
XBQM-108
In the mid-1970s, the US
MQM-74C Chukar II
The Navy liked the Chukar I but wanted a somewhat faster version, and in the early 1970s Northrop developed the improved experimental MQM-74B, which was followed by the production MQM-74C Chukar II. The Chukar II is difficult to distinguish from the Chukar I, but the Chukar II is slightly scaled up and uses an uprated Williams WR24-7 turbojet with 180 pound (800 N) thrust, giving it a top speed of 590 mph (950 km/h).
Like the Chukar I, the Chukar II is ground or ship launched only. At least 1,400 Chukar IIs were built, mostly for the US Navy, but other customers included NATO, the United Kingdom, West Germany, Greece, Iran, Italy, Japan, the Netherlands, Saudi Arabia, and Spain.
BQM-74C Chukar III
In 1978, the US Navy requested a still more sophisticated drone, and Northrop responded with the BQM-74C Chukar III. This improved variant is visibly different from its predecessors, featuring a more cylindrical fuselage, in contrast with the tapered fuselage of its predecessors.
The BQM-74C incorporates a microprocessor-based autopilot that allows it to be programmed for much more sophisticated flight operations. The BQM-74C can be air launched as well as ground launched. The original engine was the Williams WR24-7A AKA J400-WR-402, with 180 pound (800 N) thrust, but in 1986 production was upgraded to the J400-WR-403 with 240 pound (1070 N) thrust. The BQM-74C is stressed for maneuvers of up to 6Gs. More than 1,600 BQM-74Cs have been built.
Northrop built ten BQM-74C Recce UAVs for tactical reconnaissance for US Navy evaluation, but this variant did not go into production.
BQM-74E Chukar III
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The BQM-74C has now been replaced in production by the BQM-74E, which is externally all but identical but incorporates the uprated J400-WR-404 engine as standard, and has a third greater range and endurance than its predecessor.
On 6 January 2015 PHT, Filipino fishermen recovered a drone of this kind floating off in the waters near Patnanungan, Quezon Province, Philippines. [1] The US Embassy in Manila said that the drone was actually fired four months earlier during American naval exercises off Guam and was just washed ashore in the Philippines through ocean currents. The country's Department of Foreign Affairs spokesperson Raul Hernandez appeared to support the US Embassy explanation, adding that at no time was the aerial target drone launched nor did it fly or crash within the Philippine territory. Human rights groups and even left-wing inclined groups/organizations have either condemned, criticized or called for an investigation regarding the incident, saying that drones can be used for surveillance and they can be used for actual combat operations, as well as suggesting it is used on spying on activities of the communist New People's Army as part of counterinsurgency efforts. However, Maj. Harold Cabunoc, spokesperson of the Philippine Army, denied that drones were taking part in the fight against rebels.[2]
Future versions
In the 1980s, Northrop built a next-generation target, the NV-144, that was substantially bigger and faster than the Chukar III, but the NV-144 did not enter production. The latest and current effort by Northrop Grumman to improve the Chukar is the BQM-74F variant of the Chukar (previously called the Target 2000). The BQM-74F has general configuration along the lines of the BQM-74C, but features swept wings, an empty weight of 600 pounds (270 kilograms), an uprated engine with 300 pound (1.33 kN) thrust, speed of up to Mach 0.93, and a design lifetime of 20 flights. The BQM-74F will be able to simulate a range of different aircraft and cruise missiles. It will also be able to tow targets and decoys, and will be compatible with current Chukar support systems and infrastructure. The Navy awarded Northrop Grumman a development contract in 2002, and the first BQM-74F was unveiled on August 22, 2005, with its first flight taking place seven days later at the naval air station in Point Mugu, California.[3][4]
Persian Gulf War combat use
In the 1991
The Chukar drones that were available were usually launched from
A 40-person team of specialists, obtained from disbanded ground-launched cruise missile units (see
When the
The drones flew over 500 kilometers (310 miles) at 630 km/h (390 mph), then began to circle
USS Chancellorsville accident
On 16 November 2013, a BQM-74E hit and damaged the USS Chancellorsville (CG-62), slightly injuring two sailors and making a hole in the superstructure just above the deck. The drone was supposed to turn away more than a mile from the cruiser during exercises to test the latest version of the Aegis Combat System, but instead continued straight into the ship.[6]
Specifications
General characteristics
- Crew: 0
- Length: 12 ft 11 in (3.94 m)
- Wingspan: 5 ft 9 in (1.76 m)
- Height: 2 ft 4 in (0.71 m)
- Empty weight: 271 lb (123 kg)
- Gross weight: 549 lb (249 kg)
- Powerplant: 1 × Williams J400-WR-404
turbojet , 240 lbf (1.1 kN) thrust Performance
- Maximum speed: 606 mph (972 km/h, 527 kn)
- Endurance: 1 hours 8 minutes
- Service ceiling: 40,000 ft (12,000 m)
See also
- History of UAVs decoys
Designation sequence: BGM-71 – MIM-72 – UGM-73 – BQM-74 – BGM-75 – AGM-76 – FGM-77
References
Citations
- ^ Jonas Cabiles Soltes, "US-made drone falls in Masbate waters", inquirer.net (Online news site of the Philippine Daily Inquirer), 7 January 2013
- ^ Tarra Quismundo, Jonas Cabiles Soltes and Mar Arguelles, "DFA backs US claim drone fired in Guam 4 months ago", inquirer.net (Online news site of the Philippine Daily Inquirer), 8 January 2013
- ^ "The BQM-74F Northrop Grumman". www.wmof.com.
- ^ "Northrop Grumman and U.S. Navy Successfully Conduct First Flight of Navy's Most Advanced Aerial Target". Northrop Grumman Newsroom.
- ISBN 9781480804562.
- ^ Jeanette Steele (18 November 2013). "Navy investigates drone mishap Why did 13-foot drone not turn away from ship, as programmed?". San Diego Union-Tribune.
Sources
- Designation-systems.net
- This article contains material that originally came from the web article Unmanned Aerial Vehicles by Greg Goebel, which exists in the Public Domain.