Bloch MB.170 Series

Specifications

1st Flight 1934

Crew: 3

Length: 12.23 m (40 ft 1 in)

Wingspan: 17.92 m (58 ft 10 in)

Height: 3.55 m (11 ft 8 in)

Wing area: 38 m2 (410 sq ft)

Empty weight: 5,612 kg (12,372 lb)

Gross weight: 7,175 kg (15,818 lb)

Powerplant: 2 × Gnome-Rhône 14N 14-cylinder air-cooled radial piston engine, 772 kW (1,035 hp) each

Propellers: 3-bladed variable-pitch propellers

Performance

Maximum speed: 530 km/h (330 mph, 290 kn) at 5,200 m (17,060 ft)

Cruise speed: 460 km/h (290 mph, 250 kn) at 4,000 m (13,120 ft)

Range: 1,650 km (1,030 mi, 890 nmi)

Service ceiling: 11,000 m (36,000 ft)

Time to altitude: 8,000 m (26,250 ft) in 11 minutes

Armament

Guns: 2 × fixed, forward-firing 7.5 mm (.295 in) MAC 1934 machine guns in the wings

2 × 7.5 mm MAC 1934s in the dorsal position

3 × 7.5 mm MAC 1934s on aft-firing mounts

Bombs: 400 kg (880 lb) of bombs – usually 8 50 kg (110 lb) or 16 22 kg (48.5 lb) bombs internally plus 6 x 22 kg bombs or flares under wing (As an alternative, 175 illumination bombs carried internally plus 6 x 22 kg bombs or flares under wing for nighttime photographic missions)

 

 

Variants

MB.170

MB.170.01 – The first prototype, equipped as reconnaissance aircraft, powered by Gnome-Rhône 14N-06 engines.

MB.170.02 – The second prototype, equipped as light bomber, powered by Gnome-Rhône 14N-06 engines.

MB.171

MB.172

MB.173

MB.174

MB.174.01 – The original MB.174 prototype, powered by Gnome-Rhône 14N-49 engines.

MB.174A.3 – Original production version, powered by Gnome-Rhône 14N-49 engines.. 56 built

MB.175

MB.175.01 – The original MB.175 prototype, powered by Gnome-Rhône 14N-48 engines.

MB.175B.3 – Second production version. 23 built, plus 56 unarmed aircraft for the Luftwaffe, powered by Gnome-Rhône 14N-48 engines.

MB.175T – Post-war torpedo bomber version for the Aeronavale. 80 built.

MB.176 –

MB.176.01 – The original MB.176 prototype, powered by two Pratt & Whitney R-1830 SC 3-G Twin Wasp engines

MB.176B.3 – Production version. 5 built

MB.177 – Single prototype, powered by two Hispano-Suiza 12Y-31 inline engines.

MB.178 – Further development, construction halted by arrival of German forces.

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