Dassault Mystère IV
|MD.454 Mystère IV|
|Dassault Mystère IVA preserved at the Musée de l'Air.|
|First flight||28 September 1952|
|Primary users||French Air Force
Indian Air Force
Israeli Air Force
|Developed from||Dassault Mystère|
|Variants||Dassault Super Mystère|
Design and development
The Mystère IV was an evolutionary development of the Mystère II aircraft. Although bearing an external resemblance to the earlier aircraft, the Mystère IV was in fact a new design with aerodynamic improvements for supersonic flight. The prototype first flew on 28 September 1952, and the aircraft entered service in April 1953. The first 50 Mystere IVA production aircraft were powered by British Rolls-Royce Tay turbojets, while the remainder had the French-built Hispano-Suiza Verdon 350 version of that engine.
France was the main operator of the Mystère IV and at the peak usage operated 6 squadrons. Most of the aircraft were purchased under a United States Offshore Procurement contract and many were returned to US custody after they were retired. In April 1953 the United States government and the United States Air Force placed an order for 223 aircraft to be operated by the French.
The Mystère IV became Israel's first swept-wing fighter when an order for Mystère IIs was changed to 24 Mystère IVs in 1955, which were delivered from April to June 1956, equipping 101 Squadron. A further 36 were delivered in August 1956, with a final aircraft, equipped for reconnaissance duties, delivered in September 1956.
On 29 October, when Israel attacked Egypt in the opening move of what became known as the Suez Crisis, invading the Sinai Peninsula, the Mystères of 101 Squadron were deployed on both air-to-air and ground attack missions. On 30 October 1956 the Mystère IV got its first kill when eight aircraft fought 16 Egyptian Air Force MiG-15s. The Mystères shot down one MiG while a second MiG and one of the Mystères were damaged. One the next day, two Mystères engaged claimed four Egyptian De Havilland Vampires shot down, with another MiG-15 and a MiG-17 claimed later that day. Israeli Mystères flew a total of 147 sorties during the war, for the loss of a single aircraft, shot down by ground fire on 2 November.
A second squadron, 109 Squadron was equipped with the Mystère IV in December 1956, while 101 Squadron passed its Mystères to 116 Squadron in November 1961. Israel planned to replace the Mystère IV with the Douglas A-4 Skyhawk, but 109 and 116 Squadron still operated the French fighter on the outbreak of the Six-Day War. The Mystère was used as a ground attack aircraft during the war, flying 610 sorties, claiming three Arab aircraft (two MiG-17s and a Jordanian Hawker Hunter) shot down for the loss of seven Mystères, five to ground fire and two by enemy fighters (one by an Egyptian MiG-21 and one by a Jordanian Hunter flown by PAF pilot Saiful azam).
The Mystère was finally retired from Israeli service on 18 March 1971.
India procured 104 of aircraft in 1957 and used them extensively in the Indo-Pakistani War of 1965.
On 16 Sept 65 a Mystère IVA shot down a Pakistani L-19. On 7 September 1965 an Indian Mystère shot down a Pakistani Lockheed F-104 Starfighter in a raid over Sargoda. The Mystère pilot Devayya was awarded the Maha Vir Chakra posthumously, 23 years after the battle.
The phasing out of the aircraft started soon after the 1965 Indo-Pakistani War, though it saw further action in the Indo-Pakistani War of 1971, it was completely phased out of the Indian Air Force by 1973.
- Mystère IV
- Prototype powered by a Rolls-Royce Tay 250 engine
- Mystère IVA
- Production fighter-bomber, 421 built, first 50 with the Rolls-Royce Tay 250 the remaining 371 with a French derivative of the Tay, the Hispano-Suiza Verdon.
- Mystère IVB
- In addition to production Mystère IVA, Dassault developed an upgraded Mystère IVB with either Rolls-Royce Avon (first two prototypes) or SNECMA Atar 101 (third prototype) afterburning engine and a radar ranging gunsight. Six pre-production aircraft were built but the project was abandoned in favour of the promising Super Mystère. In 1954, French pilot Constantin Rozanoff was killed while doing a low-level flyover of this aircraft.
- Mystère IVN
- Dassault also proposed a two-seat all-weather interceptor version called Mystère IVN. The aircraft was equipped with the AN/APG-33 radar in an arrangement similar to North American F-86D Sabre Dog, powered by a Rolls-Royce Avon turbojet, and armed with 55× 68 mm Matra rockets in a retractable belly tray. The first prototype flew on 19 July 1954. AdA eventually decided to purchase Sud Aviation Vautour and F-86K Sabre for the interceptor role but the Mystère IVN prototype continued to fly for several years as a testbed for radar equipment.
- French Air Force, 241 delivered
- Indian Air Force, 110 delivered
Specifications (Mystère IVA)
Data from The Complete Book of Fighters
- Crew: 1
- Length: 12.89 m (42 ft 31⁄2 in)
- Wingspan: 11.12 m (36 ft 53⁄4 in)
- Height: 4.60 m (15 ft 1 in)
- Wing area: 32.06 m² (345.1 ft²)
- Empty weight: 5,860 kg (12,919 lb)
- Loaded weight: 8,510 kg (18,100 lb)
- Max. takeoff weight: 9,500 kg (20,944 lb) 
- Powerplant: 1 × Hispano-Suiza Verdon 350 turbojet, 34.32 kN (7,716 lbf)
- Maximum speed: 1,110 km/h (600 knots, 690 mph) at sea level
- Range: 915 km (494 nmi, 570 mi) without external tanks, 2,280 km (1,231 nmi , 1,417 mi) with external tanks
- Service ceiling: 15,000 m (49,200 ft) 
- Rate of climb: 40 m/s (7,874 ft/min)
- Guns: 2× 30 mm (1.18 in) DEFA cannons with 150 rounds per gun
- Rockets: 55 air-to-air rockets in retractable pack
- Bombs: 1,000 kg (2,200 lb) of payload on four external hardpoints, including a variety of bombs, rockets or Drop tanks
- Related development
- Aircraft of comparable role, configuration and era
- Related lists
- Swanborough, Gordon; Green, William A (2001). An Illustrated anatomy of the world's fighters: the inside story of over 100 classics in the evolution of fighter aircraft. Osceola, WI: MBI Pub. p. 196. ISBN 0-7603-1124-2.
- Orbis 1985, pp. 3605-1608
- Aloni Air Enthusiast March/April 2005, pp. 15–16.
- Aloni Air Enthusiast March/April 2005, pp. 17–18.
- Aloni Air Enthusiast March/April 2005, p. 18.
- Aloni Air Enthusiast March/April 2005, p. 19.
- Aloni Air Enthusiast March/April 2005, p. 20.
- Aloni Air Enthusiast March/April 2005, pp. 21–23.
- Aloni Air Enthusiast March/April 2005, p. 23.
- "Devvaya", Maha Vir Chakra Recipients, Bharat Rakshak.
- B. Harry (2 September 2006). "IAF COMBAT KILLS - 1965 INDO-PAK AIR WAR" (PDF). orbat.com. Retrieved 9 September 2010.
- Aloni Air Enthusiast March/April 2005, p. 16.
- Green and Swanborough 1994, p. 149.
- Aloni Air Enthusiast March/April 2005, p. 15.
- Bridgman 1955, p. 139.
- Aloni, Shlomo (March–April 2005). "Swept-Wing Backbone: Mystère IVAs in Israeli Service". Air Enthusiast (116): 12–23. ISSN 0143-5450.
- Bridgman, Leonard (1955). Jane's All The World's Aircraft 1955–56. New York: McGraw-Hill.
- Donald, David; Lake, Jon, eds. (1996). Encyclopedia of world military aircraft. AIRtime Publishing. ISBN 1-880588-24-2.
- Green, William; Swanborough, Gordon (1994). The Complete Book of Fighters. New York: Smithmark. ISBN 0-83173939-8.
- Kopenhagen, W, ed. (1987). Das große Flugzeug-Typenbuch [The large airplane type book] (in German). Transpress. ISBN 3-344-00162-0.
- The Illustrated Encyclopedia of Aircraft. Part Work 1982–1985. Orbis Publishing.
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