Bloch MB.150

Bloch MB.150
MB.150
Model of a Bloch MB.152
Role single seat Interceptor Fighter
Manufacturer SNCASO
First flight October 1937
Primary user Armée de l'Air
Number built ca. 663

The Bloch MB.150 was a French low-wing, all-metal monoplane fighter aircraft with retractable landing gear and enclosed cockpit developed by Société des Avions Marcel Bloch as a contender in the 1934 French air ministry competition for a new fighter design.

Contents

Development

Although the competition was won by the Morane-Saulnier M.S.406 prototype, development proceeded culminating in the first attempted flight of the MB.150.01 prototype in 1936. Unfortunately, the aircraft proved unable to leave the ground. With modifications consisting of a strengthened wing of greater area, revised landing gear, and installation of a 701 kW (940 hp) Gnome-Rhone 14N-0 radial engine with a three-blade constant speed propeller, the MB.150 finally flew in October 1937.

Handed over to the Centre d'Essais du Materiel Aerien (CEMA) for service trials, its performance proved sufficiently interesting to warrant further development. This brought, at the very beginning of 1938, a small increase in wing span and installation of a 14N-7 engine. When trials were completed in late spring 1938, SNCASO was awarded an order for a pre-production batch of 25 of these aircraft.

No such production of the MB-150.01 occurred, the aircraft being totally unsuitable for mass production.[1] Redesign would lead to the MB.151.01 and MB.152.01 prototypes, developed and produced in parallel. By the outbreak of World War II, some 120 had reached the Armée de l'Air, but few of them were flyable, most missing their gunsights and propellers.

The MB.153 and MB.154 were intended as testbeds for American engines, but only the former flew, and when it crashed, a few days later, damaged beyond repair, pursuit of these alternatives also ceased. Instead, attention shifted to extending the range of the MB.152. This was achieved by moving the cockpit aft in order to make room for a new fuel tank. Other modifications included a slightly broader wing and revised aerodynamics around the cowling. The result, designated MB.155 performed favourably in flight tests and was ordered into production in 1940, however only 10 aircraft had been completed by the Fall of France. Under the terms of the armistice, the remaining 25 on the production line were completed and delivered into Vichy service. From there, some eventually made their way into the Luftwaffe after 1942.

The final member of the family, the MB.157 utilised a far more powerful engine and eventually became a very different aircraft as the design evolved from the MB.152 to accommodate the larger and heavier powerplant. Unfinished at the time of the armistice, it was ordered to be completed and flown under German supervision. Demonstrating superb performance, it was taken to Orly where the powerplant was removed for testing within a wind tunnel. The excellence in the design was confirmed. It was later destroyed in an Allied air raid.

Operational history

MB.151s and MB.152s equipped nine Groupes de Chasse (fighter groups) during the Battle of France, but they were largely outmatched by the faster Messerschmitt Bf 109E. Six groupes continued to fly in the Vichy French Air Force until this was disbanded on 1 December 1942, the aircraft being passed over to the Royal Romanian Air Force by the Germans.[2]

Though the Greek government had ordered 25 MB.151s, actually only nine of these were exported to Greece. They flew with the 24th Moira Dioxis (Fighter Squadron) of the Hellenic Royal Air Force in Elefsina against the Italians and Germans, scoring several air-to-air victories until 19 August 1941, when the last MB.151 was shot down.

During World War II, the Bloch MB.152 had destroyed at least 188 enemy aircraft, and lost about 86 of their own. They proved tough aircraft, able to stand considerable battle damage, and a good gunnery platform,[2] but with many problems: poor agility, poor weapon reliability, poor range (600 km, but here the Bf 109E was only slightly better, around 660 km), and were notably underpowered.

In 1944, several surviving MB.152s were liberated at an airfield in mid-southern France. After being flight-tested and evaluated, and painting out the balkenkreuzen and swastikas, they were fitted with more powerful American engines and went up against the last remnants of the Luftwaffe with the Free French.[citation needed]

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 Gnome-Rhône 14N-35 engines (144 built)
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. (482 built)
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. Not built.
MB.155
MB.155.01 prototype converted from a MB.152 and MB.155.C1 production versions powered by Gnome-Rhône 14N-49 engines (35 built)
MB.156
Proposed version with Gnome-Rhône 14R engine. Not built.
MB.157
Single prototype of advanced version, converted from the MB.152 and equipped with a 1,580hp Gnome-Rhône 14R engine.

Operators

 France
Armée de l'Air
  • Groupe de Chasse I/1
  • Groupe de Chasse II/1
  • Groupe de Chasse II/6
  • Groupe de Chasse I/8
  • Groupe de Chasse II/8
  • Groupe de Chasse II/9
  • Groupe de Chasse III/9
  • Groupe de Chasse II/10
  • Groupe de Chasse III/10
  • Escadrille de Chasse I/55
Aéronavale
  • Escadrille AC2
  • Escadrille AC3
 Germany
Luftwaffe
 Greece
Royal Hellenic Air Force
  • 24th Moira Dioxis RHAF
 Poland
Polish Air Forces in exile in France
  • Groupe de Chasse 1/145 Varsovie[3]
 Romania
Royal Romanian Air Force
France Vichy France
Armée de l'Air de l'Armistice[4][5]
  • Groupe de Chasse I/1 (at Lyon-Bron, reserve unit)
  • Groupe de Chasse II/1 (at Luc)
  • Groupe de Chasse I/8 (at Montpellier-Fréjorgues)
  • Groupe de Chasse II/8 (at Marignane)
  • Groupe de Chasse II/9 (at Aulnat, reserve unit)
  • Groupe de Chasse III/9 (at Salon-de-Provence)
  • Groupe de Chasse I/13 (at Nîmes-Garons)
  • Groupe de Chasse III/13 (at Nîmes-Garons)

Specifications (MB.152C.1)

Data from French Fighters of World War Two[6]; French Aircraft from 1939 to 1942[7]

General characteristics

  • Crew: one, pilot
  • Length: 9.10 m (29 ft 10 in)
  • Wingspan: 10.54 m (34 ft 7 in)
  • Height: 3.20 m (9 ft 11 in)
  • Wing area: 17.32 m² (186 ft²)
  • Empty weight: 2,158 kg (4,758 lb)
  • Loaded weight: 2,693 kg (5,937 lb)
  • Max takeoff weight: 2,800 kg (6,173 lb)
  • Powerplant: 1 × Gnome-Rhône 14N-25 14-cylinder, two-row, air-cooled radial engine, 757 kW (1,030 hp)

Performance

Armament

See also

Aircraft of comparable role, configuration and era

Related lists

References

Notes
  1. ^ Leyvastre and Courteville 1978, p. 181.
  2. ^ a b Green 1960, p. 30.
  3. ^ Belcarz 2007, pp. 47-56.
  4. ^ Cristesco 1967, p. 12.
  5. ^ Ehrengardt 1968, p. 19.
  6. ^ Brindley 1971, p. 25.
  7. ^ Breffort and Jouineau 2004, p. 36.
Bibliography
  • Belcarz, Bartłomiej. Morane MS 406C1, Caudron Cyclone CR 714C1, Bloch MB 151/152 (Polskie Skrzydła 2) (in Polish), Sandomierz, Poland: Stratus, 2004. ISBN 83-89450-21-6. About the use of the MB.151/152 by Polish Pilots of the Armée de l'Air.
  • Breffort, Dominique and André Jouineau. French Aircraft from 1939 to 1942, Volume 1: from Amiot to Curtiss. Paris, France: Histoire & Collections, 2004. ISBN 2-915239-23-1.
  • Brindley, John F. French Fighters of World War Two, Volume One. Windsor, UK; Hylton Lacy Publishers Ltd., 1971. ISBN 0-85064-015-6.
  • Cristesco, Michel. The M.Bloch 151 & 152 (Aircraft in Profile number 201). Leatherhead, Surrey, UK: Profile Publications Ltd., 1967. No ISBN.
  • Ehrengardt, Christian-Jacques with Michel Cristesco and Raymond Danel. Bloch 152 Spécial. Paris, France: IPMS France, 1968.
  • Green, William. War Planes of the Second World War, Volume One: Fighters. London: Macdonald & Co.(Publishers) Ltd., 1960 (10th impression 1972). ISBN 0-356-01445-2.
  • Joanne, Serge. Le Bloch MB-152 (Histoire de l'aviation 13) (in French). Outreau, France: LELA Presse, 2003. ISBN 2-914017-12-X. (In French)
  • Joanne, Serge. Marcel Bloch 151/152. Sandomierz, Poland/Redbourn, UK: Mushroom Model Publications, 2007. ISBN 83-89450-28-3.
  • Leyvastre, Pierre and Pierre Courteville. "Bloch's Fighters: the Contentious Combatants". Air International, April 1978, pp. 179–189, 204–205.
  • Marchand, Patrick. Bloch 150, 151, 152, 155, 157, 700 C1. Le Muy, France: Les éditions d'Along, 2000. ISBN 2-914403-10-0. (In French)
  • Pelletier, Alain. French Fighters of World War II in Action (Aircraft Number 180). Carrollton, TX: Squadron/Signal Publications, Inc., 2002. ISBN 0-89747-440-6.

External links


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