Role: Attack
Origin: Russia
Manufacturer: Ilyushin
First flight: 1953
Class: Prototype
Built: 7

[i]
The Ilyushin Il-40 (NATO reporting name: Brawny) was a two-seat Soviet jet-engined armored ground-attack aircraft. The first prototype flew in 1953 and was very successful except when it fired its guns, as their combustion gasses disturbed the airflow into the engines and caused them to flameout or hiccup. Remedying this problem took over a year and involved the radical change of moving the engine air intakes all the way to the very front of the aircraft and repositioning the guns from the tip of the nose to the bottom of the fuselage, just behind the nosewheel. The aircraft, now resembling a double-barreled shotgun from the front, was ordered into production in 1955. Only five production aircraft had been completed before the entire program was canceled in early 1956 when the VVS discarded its close air-support doctrine in favor of tactical nuclear weapons on the battlefield.

[Variants]
Il-40 – First prototype
Il-40P – Second prototype and five production aircraft.
Il-40K – (korrektirovshchik – corrector) – Artillery spotter, three-seater with spotter-navigator in glazed nose cockpit.
Il-40T – (torpedonosets) – Torpedo bomber, three-seater with navigator in glazed nose with optically flat panels for weapon aiming.
Il-42 – Late 1960s revival of the Il-40 concept, beaten in competition with the Sukhoi T-8 (prototype Su-25)
Il-102 – Ultimate iteration of the Il-40/Il-42, with modern avionics and engines, also beaten by the Sukhoi T-8.

[Specs]
Crew: two
Length: 17.215 m (56 ft 5¾ in)
Wingspan: 17 m (55 ft 9½ in)
Height: 5.76 m (18 ft 10 5/8 in)
Wing area: 54.1 m² (582.4 ft²)
Empty weight: 8,500 kg (18,750 lb[1])
Loaded weight: 16,600 kg (36,600 lb)
Max. takeoff weight: 17,600 kg (38,810 lb)
Powerplant: 2 × Tumansky RD-9V turbojets
Dry thrust: 2,600 kgf (25 kN) (5730 lbf) each
Thrust with afterburner: 3,250 kgf (31.9 kN) (7170 lbf) each

Maximum speed: 993 km/h (617 mph)
Range: 1,320 km (808 mi (with drop tanks))
Service ceiling: 11,600 m (38,000 ft (Il-40))
Wing loading: 31.5 kg/m² (64.5 lb/ft²)

Guns:
4 × AM-23 23 mm cannon in the fuselage nose.
1 × AM-23 23 mm cannon in remotely controlled rear turret.
Bombs: up to 1,400 kg (3,100 lb) of bombs in four wing bomb bays and four underwing pylons carrying bombs, rockets or drop tanks.

All data is from wikipedia.