Bloch MB.150-MB.157

1st Flight 1937

The Bloch MB.150 to MB.157 was a French low-wing monoplane fighter aircraft developed and produced by Société des Avions Marcel Bloch.

It featured all-metal construction, complete with a retractable undercarriage and a fully enclosed cockpit.

Redesigns of the MB.150 design led to the improved MB.151 and MB.152 which entered squadron service with the Armée de l’Air.

By the outbreak of the Second World War, around 120 aircraft had been delivered to the Armée de l’Air but most were not sufficiently equipped to be considered operational.

An improved MB.155 had greater range.

Ordered into production in 1940, only ten aircraft had been completed by the Fall of France.

The MB.157, a further improved model with a heavier and more powerful engine, was completed during the Vichy era.

Though it demonstrated promising performance, it did not enter production.

Variants

MB.150

Single MB.150.01 prototype powered by a single Gnome-Rhône 14N-07

MB.151

MB.151.01 prototype and MB.151.C1 initial production versions powered by 920hp Gnome-Rhône 14N-35 engines

MB.152

MB.152.01 prototype and MB.152.C1 up-rated production versions produced in parallel with 151.C1, powered by 1,050hp Gnome-Rhône 14N-25 engines.

MB.153

Single MB.153.01 prototype with Pratt & Whitney R-1830 Twin Wasp engine

MB.154

Proposed version with Wright R-1820 Cyclone engine.

MB.155

MB.155.01 prototype converted from a MB.152 and MB.155.C1, production versions powered by Gnome-Rhône 14N-49 engines.

MB.156

Proposed version with Gnome-Rhône 14R engine.

MB.157

Single prototype of advanced version, converted from the MB.152 and equipped with a 1,590hp Gnome-Rhône 14R-4 engine.

Specifications

Crew: 1

Length: 9.1 m (29 ft 10 in)

Wingspan: 10.54 m (34 ft 7 in)

Height: 3.03 m (9 ft 11 in)

Wing area: 17.32 m2 (186.4 sq ft)

Empty weight: 2,158 kg (4,758 lb)

Gross weight: 2,693 kg (5,937 lb)

Max take-off weight: 2,800 kg (6,173 lb)

Powerplant: 1 × Gnome-Rhône 14N-25 14-cyl. two-row air-cooled radial piston engine, 805 kW (1,080 hp)

or 1 x Gnome-Rhône 14N-49 engine rated at 820 kW (1,100 hp)

Propellers: 3-bladed variable-pitch propeller

Performance

Maximum speed: 509 km/h (316 mph, 275 kn)

Cruise speed: 450 km/h (280 mph, 240 kn)

Range: 600 km (370 mi, 320 nmi)

Service ceiling: 10,000 m (33,000 ft)

Time to altitude: 2,000 m (6,600 ft) in 3 minutes 24 seconds

Wing loading: 155.4 kg/m2 (31.8 lb/sq ft)

Power/mass: 0.182 hp/lb (0.299 kW/kg)

Armament

2 × 20 mm Hispano-Suiza HS.404 cannon with 60-round drum magazines

2 × 7.5 mm (0.295 in) MAC 1934 M39 machine guns with 500 rpg

or

4 × 7.5 mm (0.295 in) MAC 1934 M39 machine guns with 500 rpg.

………………………………………………………………………………………………………………………………………………………………………………………………………………………………..

Share on facebook

Share on facebook