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| Dassault Mirage G | |
|---|---|
| Name | Dassault Mirage G |
| Caption | Mirage G prototype |
| Type | Experimental variable-geometry fighter |
| Manufacturer | Dassault Aviation |
| First flight | 1967 |
| Status | Cancelled |
Dassault Mirage G
The Dassault Mirage G was a French experimental variable-sweep wing fighter prototype developed by Dassault Aviation during the 1960s in response to requirements from the French Air Force and potential export customers such as the Royal Air Force, United States Air Force, and Indian Air Force. Conceived amid contemporaneous programs like the General Dynamics F-111, Grumman F-14 Tomcat, and Mikoyan-Gurevich MiG-23, the Mirage G sought to merge high-speed performance with short-field handling through a pivoting wing and advanced aerodynamics under designers influenced by figures such as Marcel Dassault and airborne research centers like ONERA. Despite promising flight tests and evaluations against projects including the SEPECAT Jaguar and Dassault Mirage F1, shifting strategic priorities and budgetary pressures led to program termination before production.
Development began at Dassault Aviation following feasibility studies influenced by earlier variable-geometry experiments in the United Kingdom and United States, drawing on knowledge from projects at BAC, Hawker Siddeley, Grumman, and the Rockwell International studies. Motivations included meeting specifications from the Armée de l'Air and export opportunities in nations such as Brazil, Argentina, and Israel, while competing with designs from Lockheed and Saab. Initial prototypes were funded through cooperative arrangements involving the French government and Dassault shareholders after consultations with French defense ministers associated with cabinets of Georges Pompidou and Charles de Gaulle policy planners. Flight testing commenced in the mid-1960s with prototypes evaluated at airfields used by Centre d'essais en vol and referenced against flight data from the F-111A and Tornado demonstrators.
The Mirage G featured a shoulder-mounted variable-sweep wing mounted to a slender fuselage derived from the company's experience with the Dassault Mirage III and Dassault Mirage 5, combined with intake design knowledge from the Dassault Étendard series and tailplane arrangements reminiscent of the Dassault Balzac and Dassault Mercure research work. Powerplants under consideration included variants of the SNECMA Atar turbojet and options such as the Pratt & Whitney TF30 to satisfy requirements from potential partners like McDonnell Douglas and General Electric. Avionics drew on equipment common to Thales Group suppliers, integrating radar and navigation packages comparable to those in the Dassault Mirage F2 and systems tested on SEPECAT Jaguar prototypes. Structural materials employed aluminum alloys and limited composites similar to those used in contemporary Panavia Tornado studies; control systems explored fly-by-wire concepts being developed at institutions including ONERA and research groups linked to Supersonic Transport programs.
Dassault proposed several variants to meet diverse customer needs, analogous to other families such as the F-14 Tomcat and MiG-23 lines. Proposed configurations included a single-seat interceptor comparable to the Mirage III lineage, a two-seat trainer similar to Dassault/Dornier Alpha Jet arrangements, and a ground-attack derivative with strengthened airframe and weapon pylons akin to Dassault Mirage 2000N mission adaptations. Export versions were marketed with varying powerplants and avionics suites to appeal to air arms like the Argentine Air Force, Brazilian Air Force, and Indian Air Force, and proposals included navalized conversions for carriers operated by French Navy and potential customers such as Royal Navy. Mock-ups displayed to delegations from Embraer and state delegations emphasized interoperability with NATO-standard armaments used by forces such as the United States Navy and Royal Australian Air Force.
Operational use was limited to flight testing and evaluation at French test centers and demonstration sorties at airshows attended by delegations from Farnborough Airshow, Paris Air Show, and exhibitions frequented by representatives from Israel Aircraft Industries and Sukhoi. Prototype sorties compared handling with contemporary variable-geometry aircraft like the MiG-23 and F-111, providing data on takeoff performance, transonic acceleration, and approach stability that informed later Dassault projects such as the Mirage 2000 and export studies for the Alpha Jet family. The program was progressively curtailed amid competing procurement decisions that favored simpler fixed-wing designs like the SEPECAT Jaguar and strategic keuzes influenced by ministries associated with Valéry Giscard d'Estaing and budgetary constraints shaped by defense reviews in the 1970s.
General characteristics and performance figures were tentative and varied by proposed configuration; designs referenced parameters from the Mirage III and F-111 families. Typical projected specifications included: - Crew: 1–2 in trainer/interceptor variants as found in Alpha Jet and Mirage F1 - Powerplant: single SNECMA Atar or alternative Pratt & Whitney TF30 comparable to engines in the F-111 and F-14 - Variable-sweep wing: sweep range analogous to the MiG-23 and F-14 - Avionics: radar and navigation suites sourced from suppliers linked to Thales Group and compatible with NATO systems used by Royal Air Force and United States Air Force
Although never entering mass production, the Mirage G influenced Dassault's subsequent design philosophy and contributed technical lessons to projects like the Mirage 2000 and studies for the Rafale development lineage, while informing collaborative European efforts epitomized by the Panavia Tornado program. The program's cancellation reflected broader shifts observable in procurement decisions by actors such as the French government and procurement offices in capitals including Brasília, Buenos Aires, and New Delhi, and paralleled contemporary cancellations in the United Kingdom and United States where variable-geometry programs faced cost scrutiny. Surviving prototypes and documentation have been studied by aerospace historians from institutions like Musée de l'Air et de l'Espace and academic researchers at École Polytechnique and ISAE-SUPAERO, preserving the Mirage G's role as a technical stepping stone in European combat aircraft evolution.
Category:Dassault aircraft Category:Experimental aircraft