No. 10774. Breguet Bre 462 B4 Vultur French Air Force
Photograph from Service historique de l’armée de l’air

Breguet Bre 462 B4 Vultur

08/31/2011. Remarks by Johan Visschedijk: "In 1935 the Société Anonyme des Ateliers d'Aviation Louis Breguet produced the Bre 460 M5 Vultur light bomber and strike aircraft, powered by two Gnome-Rhone 14Krsd engines, only one example was produced.

The Bre 460 M5 was developed into the Bre 462 B4, fitted with new engines, reduced cabin glazing area, a new tail, and enhanced equipment; the first of two examples produced was flown in October 1936.

The second aircraft was briefly registered F-AKIB, eventually both aircraft ended up with the Vichy AF and were scrapped in 1942. The Br 462 B4 is pictured here while being jacked up for landing gear cycling tests with running engines.

TYPE. Twin-engined multi-seat medium bomber monoplane.
WINGS. Low-wing cantilever monoplane. Wing in three sections, a centre-section of parallel chord and thickness, and two outer-sections tapering in chord and thickness from the roots to the elliptic tips. Structure consisted of two steel "I"-section spars braced together to form a girder, and a number of three-piece light alloy (L.2R) former-ribs fixed to the spars by gusset-plates and rivets. Leading-edge covered with light alloy sheet (L.2R). Upper surface of wing covered with light alloy strips running at right angles to spars, lower surface between the two spars covered with fabric. Entire straight trailing-edge provided with slotted flaps, in four sections for each half-wing. The inner pairs acted as camber-changing flaps and the outer as ailerons.
FUSELAGE. Metal structure in two sections, rectangular forward and oval aft. Structure built up of a number of cross-frames, interconnected by stringers and covered with stressed sheet riveted on in longitudinal panels. The whole fuselage was of light alloy (L.2R).
TAIL UNIT. Monoplane type with fins and rudders at the extremities of the tail-plane. Steel spars and light alloy ribs. Tail-plane and fin covered with light alloy sheet, rudder and elevators with fabric. Trimming-tabs in rudder and elevators.
UNDERCARRIAGE. Retractable type. In two separate units, each unit consisted of a fork carrying an "Electron" wheel and backwardly inclined struts, which did break inwardly to raise the wheel until it was buried almost entirely within the engine nacelles. Hydraulic retraction. Wheels had balloon tires and brakes. Steerable tail-wheel.
POWER PLANT. Two Gnome-Rhone 14No fourteen-cylinder dual-row air-cooled geared and supercharged engines developing 950 hp each at 12,136 ft (3,700 m). Welded steel-tube mountings attached to front spars of centre-section. Three-bladed controllable-pitch airscrews. Double-walled NACA cowlings. Fuel tanks in wings.
ACCOMMODATION. In nose there was a gun position armed with a machinegun or light automatic canon, and below, a position for the navigator-bomber, provided with transparent panels for forward and downward observation, bomb-sights, releases, etc. Behind this was the wireless-operator's position and installation for camera. Over the leading-edge of the wing was the pilot's compartment seating two in tandem with dual controls. Then followed the internal bomb compartment. Above trailing-edge of wing was a second gunner's position, and below, in the tail of the forward portion and below the after-portion of the fuselage, was a third gunner's position with a complete field of fire aft and below. Passage through the fuselage connected all positions. All positions provided with parachute exits.
Span 67 ft 3 in (20.5 m)
Length 48 ft 7 in (14.82 m)
Height 13 ft 9 in (4.2 m)
Wing area 624 sq.ft (58 sq.m)
Empty 9,570 lb (4,350 kg)
Crew 704 lb (320 kg)
Movable military equipment 1,342 lb (610 kg)
Bombs 2,200 lbs (1,000 kg)
Fuel and oil 4,224 lb (1,920 kg)
Loaded 18,040 lb (8,200 kg)
Max speed at sea level 198.7 mph (320 kmh)
Max speed at 13,120 ft (4,000 m) 238.3 mph (390 kmh)
Climb to 6,560 ft (2,000 m) 7 min 20 sec
Climb to 13,120 ft (4,000 m) 13 min 50 sec
Service ceiling 20,000 ft (6,100 m)
Range 1,240 mls (2,000 km)."

Created August 31, 2011