Addition to Ouragans and Mysteres posted while ago.
Many thanks to Hood for help and encouragement.
Note: good sources - photographs and drawings - of these aircraft are somewhat scarce, therefore these drawings may be rather far from perfect in that respect.
Between 1954 and 1958 four Ouragan fighters were adapted to rough field operations with twin-wheeled main langing gear and landing parachute. Idea was mainly to allow them operate as ground-attack aircraft in Algeria. They were nicknamed "Barougan" - a portmoneau of Arabic "baroud" (battle) and Ouragan. After extensive trials most were reconfigured back to standard configuration.
France, Dassault MD.450 Ouragan/Barougan
Eleventh pre-production Ouragan was built in 1952 with solid nose and lateral intakes and designated MD.450-11 (after serial number) or MD.450-30L (after 30mm cannon and lateral intakes). It was a testbed for a planned MD.451 Aladin nightfighter that later evolved into Mystere IIIN (see below).
France, Dassault MD.450-11 Ouragan (MD.450-30L)
Part of the Ouragan development process was a project to create twin-seated radar-equipped (AI Mk.17 or APG-33) night fighter designated MD.451 Aladin, then MD.453 Harmattan and finally MD.453 Mystere IIIN or Mystere de Nuit. Only one prototype was completed and was first flown in 1952 but never equipped with radar due to project being cancelled in favor of more promising Mystere IVN (see below), while the aircraft itself was later used as testbed for ejection seats.
France, Dassault MD.453 Mystere IIIN (Mystere de Nuit)
Further development of Mystere IVA led to Mystere IVB, which, in fact shared with it's predecessor only wings, horizontal tail surfaces, main landing gear and some equipment. Prototype was first flown in 1953, followed by six more examples. Development was cancelled in favor of Super Mystere.
France, Dassault MD.454 Mystere IVB
In parallel with Mystere IVB a slightly (1,17m) twin-seat night-fighter Mystere IVN was developed. It was to be equipped with APG-33 radar, two 30mm cannons and retractable pack for 52 68mm rockets. Prototype was flown in 1954 but further development was cancelled on cost and performance (insufficient endurance and some issues with radar) grounds in favor of Vautour and purchase of US F-86D's. On 31 may 1955 Jacqueline Auriol flying Mystere IVN achieved Women's Speed Record of 1151 km/h on base of 12,3km. Later the plane was used as testbed in development of radar equipment, including AIDA and ALADIN radars.
France, Dassault MD.454 Mystere IVN