Designed as a single-seat ground-attack aircraft, the Sud-Est SE.2410 Grognard (Grumbler – a nickname for a soldier of Napoleon’s Old Guard) prototype flew for the first time on 30 April 1950. Powered by two 2197kg thrust Hispano-Suiza Nene 101 turbojets mounted one above the other in the fuselage and aspirated via a dorsal inlet, the Grognard I flew as a single¬-seater with wings swept at 47 degrees.
A second prototype, the SE.2415 Grognard II, flew in February 1945. Both designs suffered from flutter-induced problems. The definitive production version would have been the SE.2418, which was to have been powered by Rolls-Royce Tay turbojets, but the SO Vautour was selected to meet the Armee de l’Air’s ground-attack requirement instead.
SE.2410 Grognard
Engine: 2 x 2197kg Hispano-Suiza Nene 101 turbojets
Wingspan: 13.57 m / 44 ft 6 in
Wing area: 495 sq.ft
Length: 15.40 m / 50 ft 6 in
Height: 17 ft
Empty weight: 24,508 lb
Loaded weight: 31,967 lb
Max. speed: 1038 km/h / 645 mph at 4920 ft
Ceiling: 11590 m / 38050 ft
ROC: 5315 fpm
Range: 853 km / 530 miles
Armament: 2 x 30mm cannon, bombs and rockets
Crew: 1
All Aero 