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  • Ilyushin IL-40 (Brawny) Ground-Attack Aircraft Prototype

    The Ilyushin IL-40 Brawny ground attack platform existed in only seven prototypes before the design was dropped from contention.

     Updated: 5/1/2017; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com

    Following World War 2 (1939-1945) the ground attack role was still very much a consideration for world air forces. It was envisioned that the next war in Europe would take place between the Soviet Empire and European powers as well as the United States. With this would come a major ground war involving many tanks and, to counter this threat, dedicated ground attack aircraft were still in need.

    The early 1950s saw the first frontline combat use of jet-powered fighters (through the Korean War) and bombers were soon surpassed by jet-powered designs. Additional work on turbojets meant that they were made more efficient, compact, reliable and powerful. Single engine jets were becoming commonplace and proven in such stellar designs as the Soviet Mikoyan-Gurevich MiG-15 and the North American F-86 "Sabre" lines.

    Work on a new ground attack platform for the Soviet Air Force began in 1950 by the Ilyushin concern with jet powerplants being the focus. Up to know, the company was well-known for its World War 2-era contribution of the two-seat, prop-driven IL-2 "Sturmovik" which was more or less an armored flying tank of sorts. For the new design, the engine installations became a pair of Mikulin AM-5 turbojets developing 4,740 pounds thrust and set in nacelles alongside a largely tubular metal airframe. The cockpit was set aft of a long nose cone assembly and a conventional, single-finned rudder approach was given to the tail with mid-set horizontal planes featured. The wing mainplanes were swept back 35-degees and given large boundary layer fences for the needed control at high speeds. A tricycle undercarriage, wholly wheeled and completely retractable into the design, added a most modern element. Three dive brakes allowed for improved control when coming into an attack action. The crew was two and they seated in tandem with full cockpit armoring planned due to the low altitude levels the aircraft was expected to attack in. Each crew position was also to feature an ejection seat.

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    Ilyushin IL-40 (Brawny) Technical Specifications

    Service Year: 1953
    Type: Ground-Attack Aircraft Prototype
    National Origin: Soviet Union
    Manufacturer(s): Ilyushin - Soviet Union
    Production Total: 7

    Structural (Crew Space, Dimensions and Weights)

    Operating Crew: 2
    Length: 56.46 feet (17.21 meters)
    Width: 55.77 feet (17.00 meters)
    Height: 18.90 feet (5.76 meters)

    Weight (Empty): 18,739 lb (8,500 kg)
    Weight (MTOW): 38,801 lb (17,600 kg)

    Installed Power and Standard Day Performance

    Engine(s): 2 x Tumansky RD-9V turbojet engines developing 7,170 pounds of thrust each with afterburner.

    Maximum Speed: 617 mph (993 kph; 536 knots)
    Maximum Range: 820 miles (1,320 km)
    Service Ceiling: 38,058 feet (11,600 meters; 7.21 miles)

    Armament / Mission Payload

    ORIGINAL (Standard):
    6 x 23mm Nudelman-Rikhter NR-23 cannons in upper nose section.
    1 x 23mm Nudelman-Rikhter NR-23 cannon in remote-controlled tail barbette.

    REVISED (Standard):
    4 x 23mm AM-23 cannons in lower nose section
    1 x 23mm Nudelman-Rikhter NR-23 cannon in remote-controlled tail barbette.

    Up to 3,100 lb of internal and external stores to include conventional drop bombs and air-to-surface rockets (in-wing bomb bays as well as underwing hardpoints).

    Global Operators / Customers

    Soviet Union (cancelled)

    Model Variants (Including Prototypes)

    IL-40 - Base Product Designation; initial prototype.

    IL-40P - Revised prototype with extended jet intakes and underfuselage cannon armament; one prototype with five production-quality airframes completed.

    IL-40K - Proposed artillery spotting aircraft

    IL-40T - Proposed torpedo bomber aircraft

    IL-42 - Revised IL-40 for new ground attack requirement.

    IL-102 - Revised IL-42 for ground attack requirement; model of 1982.