Brochet Designations

hesham

hesham

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Hallo,

Brochet MB-40 :high wing light aircraft powered by one 65 hp Cont A65 engine.
Brochet MB-60 :tandem two seat high wing cabin monoplane developed from MB-50.
Brochet MB-73 :was MB.70 with 85 hp Cont. A.65-85 engine.
Brochet MB-76 :was MB.70 with 90 hp Cont C.90-14F engine.
Brochet MB-83 :was MB.80 converted with 90 hp Cont. C.90-14F ENGINE.
Brochet MB-84 :was MB.70 converted with 65 hp Cont. A.65 engine.

Brochet MB.130 twin engined light aircraft
 
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The completing;


MB-1C was a glider of 1934
MB-10 was single seat glider.
MB-20 was a parasol wing motor glider monoplane which became Avia-50 before completing.
MB-21 was appeared in 1951, a M Darnaud proposed installing a 60 hp Salmson 9Adr in a 2-seat tandem MB 20 derivative.
MB-30 was single seat open cockpit pylon-mounted high wing monoplane.
MB-31 was originally built under contract as the Letord-Brochet 'Libellule' powered by a single 32 hp Menguin HO2. engine.
MB-40 was began as a 1936 for M Thierry Prieur as another Letord-Brochet Project. Work was begun on two airframes which were to be 45 hp Salmson radial-powered MB 30 derivatives,two members of the Aéro-club de Suresnes completed one of these airframes with a 65 hp Continental in 1949 as the MB 40 we know .
MB-50 was developed from MB-30 with various engines.
MB-60 was a tandem two seat high wing cabin monoplane developed from MB-50,powered by an 80 hp Salmson 5-cylinder radial engine.
MB-70 was developed from MB-60 with 45 hp Salmson engine.
MB-71 was MB-70 with 75 hp Minie 4DC-32 engine.
MB-72 was MB-70 with 65 hp Cont. A.65 engine.
MB-73 was MB.70 with 85 hp Cont. A.65-85 engine.
MB-74 & MB-75 as below in reply # 4
MB-76 was MB.70 with 90 hp Cont C.90-14F engine.
MB-80 was MB-70 with wide fuselage and 75 hp Minie 4DC-32B engine.
MB-81 was MB-80 with Hirth 500-B2 engine.
MB-82 ------?
MB-83 was MB.80 converted with 90 hp Cont. C.90-14F engine.
MB-84 was MB.70 converted with 65 hp Cont. A.65 engine.
MB-90 was a biplane with tricycle gear for towing gliders,Project.
MB-100 was MB-80 with modified tail and cabin,and 100 hp Hirth HM504A-2 engine.
MB-101 was MB-100 with tropical flying modifications.
MB-110 was four seat enlarge MB-100 and more powerful engine.
MB-120 was MB-80 lighter wings modified flaps and Cont. C.90 engine.
MB-130 was twin boom high-wing light pusher aircraft Project,with 160 hp engine.
MB-130/II was a agricultural low-wing monoplane Project of 1955,with chemical tanks.
MB-130/III was a twin-boom low-wing light pusher monoplane Project,powered by one 145 hp Continental engine.
 
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From TU 211,

the Brochet MB-1C was a glider of 1934,followed by MB-10,but was not the same design.
 
Thanks hesham. A few notes ...

This designation MB 1C is very odd. In any case, if this design dates to 1934, then MB 10 didn't follow it - the MB 10 'Ginette' preceded it by three years.

The 1934 MB 20 was a parasol motor-glider achieved by combined the wings of a wrecked Avia 15A glider with a Brochet-designed fuselage. A 25 Poinsard engine and pusher prop were mounted above the wing (in line with the wings support pylon). The MB 20 was all but complete but untested when Avia took over the project. Before formal testing commenced, Ing. Ramond Jarlaud simply substituted some standard Avia parts (in anticipation of future production versions). That didn't happen and the sole MB 20/Avia 50 MP crashed in 1935.

MB 21 - In 1951, a M Darnaud proposed installing a 60 hp Salmson 9Adr in a 2-seat tandem MB 20 derivative. Darnaud proposed the designation MB 21 for this variant. AFAIK, this proposal never went anywhere.

The MB 31 wasn't twin-engined, rather it originally had a two-cylindered engine. It was originally built under contract as the Letord-Brochet 'Libellule' powered by a single 32 hp Menguin HO2. Later it was re-engined with a 25 hp Poinsard as F-WEAJ. Finally, it became the MB 31 as F-PEAJ once a 40hp Salmson 9AD radial was installed.

The MB 40 began as a 1936 for M Thierry Prieur as another Letord-Brochet project. Work was begun on two airframes which were to be 45 hp Salmson radial-powered MB 30 derivatives. Prieur failed to come through with the money and the two almost-completed airframes went into storage. Two members of the Aéro-club de Suresnes completed one of these airframes with a 65 hp Continental in 1949 as the MB 40 we know.

MB 50 Pipistrelle: Engines included 27 hp Saroléa, 27 hp Aubier et Dunne Jaguar 810, 40 hp Train, and 40 hp Salmson 9Abd.

The sole MB 60 Barbastelle was powered by an 80 hp Salmson 5-cylinder radial.

The one-offs MB 74 and MB 75 are frustratingly-difficult to find information on ...

The MB 74 (n°19) was registered as F-PEVY in April 1955 and operated out of the Aérodrome de Persan-Beaumont (now LFPA) by the Aéro club G Thomain. Obiously it was an MB 70 derivative but of what sort? The MB 75 (F-PHJF), based out of Lyon Bron (LFLY), is listed c/n 77 BIS (but, obviously, that is not a Brochet numéro de construction).

Another odd c/n is 'n° 01/05' for the 'MB 501'. I'm assuming that this is an informal designation for an MB 50 variant but who knows? The 'MB 501' was registered F-PGIK until cancelled in April 1983.
 
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Thanks for that hesham. This Salut Les Spotters reference gets odder. What Jean Noël calls the Type 1C does seem to be a reference to the 1931 MB 10 'Ginette'. But then Noël immediately segues into the 1934 MB 20 and MB 30!

Below is a chronology cribbed from here: http://avions.brochet.free.fr/Histoire1.html

January 1931: Maurice Brochet begins construction of a glider in his workshop at the Hôtel des Voyageurs at Plaisir-Grignon station (Seine and Oise).

April 1931: Brochet's glider is flown successfully by Georges Abrial at Plaisir Grignon.

June 1931: Maurice Brochet's 'Ginette' glider flown at Beynes-Thiverval by Mr. Poirier (commissioner of Aero-Club de France who, two months later, would pass Brochet's A brevet).

BTW: Some sources refer to the MB 20 as a "planeur à moteur auxiliaire" rather than a true motor-glider. It seems a slim distinction and Avia had no such doubts - their designation 50 MP stood for 'Moteur Planeur'.

Outside of this MB designation list is the 1945 Brochet Beynes-CAU motor-glider. Nicknamed 'Le Brocheteau', this was a Grünau Baby II sailplane fitted with a 25 hp AVA HO2 pusher. Construction for the Club Aéronautique Universitaire (CAU) was shared between Constructions Aéronautiques Maurice Brochet and Neauphle le Château. https://www.j2mcl-planeurs.net/dbj2mcl/planeurs-machines/planeur-fiche_0int.php?code=2567

BTW: Poinsard and Mengin engines keep coming up with Brochet designs. It should be noted that these 1933 1,249 cc HO2 engines were designed by René Poinsard for manufacture by the Établissements Pierre Mengin. Thus, the Poinsard 25 hp is also known as the Mengin Type B. The geared version of the Type B produced 32 hp for take-off (29hp at 1,450 rpm prop speed). Although it has no Brochet connection, there was also a 1935 longer bore HO2 designated Mengin Type C, later dubbed 2A.01. Later on, Établissements Pierre Mengin becomes Genete-Hochet-Mengin with its 1938 Model GMH (producing 40hp at higher rpm) and an experimental 1940 72 hp HO4 Hochet-Mengin using Type C cylinders.[/B]
 
The Brochet MB.130 was apparently called the Attila (though I cannot find my source for that name at the moment).
It was a reference to the famous saying about the fierce Hun: "Wherever he passed through, grass no longer grew." Appropriate enough for an agricultural aircraft carrying chemical to kill weeds!
 

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