Dassault Mirage 4000
Dassault%20%20Mirage%204000%20Jet%20Fighter%20Aircraft.jpgDeveloped as a private venture, the Mirage 4000 was designed to fulfil both interception and low-altitude penetration roles, and was fundamentally a scale-up of the Mirage 2000. The prototype, originally known as the Super Mirage 4000, was flown on 9 March 1979, achieving Mach=1.6 during its first flight and Mach=2.2 five weeks later, on 11 April, during its sixth flight. Powered initially by two SNECMA M53-2 turbofans with afterburning thrust of 8500kg, the Mirage 4000 introduced a number of advanced features, including the extensive use of boron and carbonfibre composites for structures, and computer-derived aerodynamics and a fly-by-wire active control system making possible a rearward CG. Built-in armament consisted of two 30mm cannon and external ordnance loads in excess of 8000kg could be distributed between 11 external stations. The single prototype was re-engined with M53-5 turbofans with afterburning thrust of 8790kg during the course of its flight test programme. No production contract was placed for the Mirage 4000, but in 1986, the prototype was re-engined with M53-P2 engines and participated in the Rafale programme.

Dassault Mirage 4000
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Specification
MODEL Mirage 4000
ENGINE 2 x SNECMA M53 turbofans, 10000kg
DIMENSIONS
Wingspan 12.0 m 39 ft 4 in
Length 18.7 m 61 ft 4 in
Wing area 73.0 m2 785.76 sq ft
PERFORMANCE
Max. speed 2333 km/h 1450 mph
Ceiling 20000 m 65600 ft
Range w/max.fuel 3700 km 2299 miles
ARMAMENT 2 x 30mm cannons, weapons on ten hardpoints
* The "Mirage 4000" was a scaled-up version of the Mirage 2000, initially powered by twin SNECMA M53-2 engines. It was originally announced in late 1975 as the "Delta Super Mirage", intended to compete with the US McDonnell-Douglas F-15 Eagle heavy fighter. A mockup was displayed two years later and first flight was on 9 March 1979, with Jean-Marie Saget at the controls. It appeared at the Paris Air Show later in the year. The aircraft was privately funded, with Dassault having an eye on Middle Eastern users, particularly the Saudis and the Iraqis. The company also thought it could be a good replacement for the AA's Mirage IV bomber.
Mirage 4000 versus Mirage 2000

The Mirage 4000 leveraged off of Mirage 2000 technology, but had an empty weight 74% greater than that of the Mirage 2000. The Mirage 4000 was partly built of composite materials. It had an FBW AFCS and canards mounted on the air intakes. It was intended to be used as an interceptor and for low-level strike, with a warload of 8 tonnes (17,600 pounds) carried on 11 stores pylons. Extensive internal fuel tankage gave it long range. Like other Mirage delta fighters, it was fitted with twin 30 millimeter cannon. The cockpit layout was analog, though it did have a HUD; a Thomson-CSF Cyrano 500 radar, a more powerful derivative of the RDM fitted to the Mirage 2000, was considered but not fitted.

DASSAULT MIRAGE 4000:images.jpeg
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spec metric english
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wingspan 12 meters 39 feet 4 inches
wing area 73 sq_meters 758.8 sq_feet
length 18.7 meters 61 feet 4 inches
empty weight 13,000 kilograms 28,660 pounds
typical loaded weight 17,000 kilograms 37,500 pounds

maximum speed 2,445 KPH 1,520 MPH / 1,320 KT
service ceiling 20,000 meters 65,600 feet
combat radius 2,000 KM 1,245 MI / 1,080 NMI
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Only one prototype was built, flying in tests and demonstrations during the early 1980s, during which it was updated to SNECMA M53-5 engines. The Saudis, having obtained F-15s, were not interested, and the Iraqis, strapped for cash due to their war with Iran, couldn't afford it. The AA was focused on buying Mirage 2000s. The prototype was finally grounded and parked in 1983 — to be hastily refurbished in 1985, when the Saudis started talking about a buy. The prototype was repainted in spiffy desert camouflage colors and went through its paces for several years, but the Saudi deal kept dragging out and finally died. Dassault officials suspected that the Saudis had caved in to pressure from their American friends to drop the deal.
Dassault Mirage 4000images1.jpeg

By that time, Dassault was focused on what would become the Rafale and the Mirage 4000 was old news. The prototype evaluated some technologies for the Rafale, finally performing its last flight on 8 January 1988. The aircraft remained parked until 1992, when it was passed on to the Musee de l'Air in Paris, to be refurbished again and put on display in 2002.
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