Denhaut & Bellanger-Denhaut Aircraft & Projects

hesham

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Hi,


Mr. Francois Denhaut was a great French designer,he worked for many
companies and also he had his own firm,he designed with Bellanger
many projects;


1- single-engined four seat tourist biplane project of 1919.
2- twin-engined flying boat biplane project.
3- twin-engined Amphibian biplane project.
4- two seat glider biplane,actually built.
5- four-engined submersible biplane project,(I translate it by my self,but not sure).


Also in 1930,he designed a three engined torpedo bomber flying boat project,
intended to compete in 1930 contest.


The aircraft actually built by Bellanger-Denhaut was the BD.22 flying boat.


Source; Francois Denhaut createur d'Hydravions
 

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Stargazer2006

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Very very nice! Thanks a lot for sharing these great flying boat designs.

The use of the word "surmarin" came as a surprise to me, I'd never heard it before. It was the exact equivalent of the English "supermarine", a word that was briefly used in the early days of aviation to describe a flying boat, until it became the name of a company.
 

Stargazer2006

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Not a project, but not very well known, the Denhaut Hy.479 flying boat:
 

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Stargazer2006

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Unidentified Bellanger-Denhaut flying boats:
 

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Stargazer2006

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Unidentified Donnet-Denhaut flying boat:
 

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hesham

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Yes,you are right,


may be it was DD.9,which was also fitted with 300 hp engines,
 

hesham

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Hi,


also he designed in 1919,a four engined long range flying boat project.
 

hesham

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Hi,


also in the report,he designed an amphibian,tourist and a flying boat projects until 1940s,
but no drawings was survivor.
 

hesham

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Hi,


here is a patent for Denhaut early flying boat.


http://retroplanes.free.fr/photo/Courrier%2035%20A5.pdf
 

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hesham

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What was Bellanger N.12 ?;

http://www.avia-it.com/act/biblioteca/periodici/PDF%20Riviste/Aeronautica/L'Aeronautica%201929%20011.pdf
 

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hesham

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From Avions magazine;

DD.1 was a 80 hp Le Rhone engined single seat flying boat
DD.2 was a 160 hp Canton-Unne engined two-seat anti-submarine flying boat
DD.3 was a 140/150 hp HS two-seat flying boat biplane
DD.4 was a 160 hp Lorraine engined two-seat flying boat biplane
DD.5 ------?
 

hesham

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Also from the same source;

DD.6 was a 200 hp HS engined two-seat high speed recce flying boat
DD.7 was a 200 hp HS engined three-seat bomber and maritime flying boat
DD.8 was a 200 hp HS engined two-seat bomber flying boat
DD.9 was a 275 hp HS engined three-seat combat biplane flying boat
DD.10 was a 400 hp HS twin engined patrol flying boat
 

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hesham

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From TU issue 211,

there was anther Project for tourist airplane,powered by one 150 hp engine,and had
a retractable landing gear.
 

toura

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hi all
look
 

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hesham

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toura said:
hi all
look

Yes my dear Toura,

we know it from long time,but this Project is new,and not mentioned in this report.
 

hesham

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hesham said:
From Avions magazine;

DD.1 was a 80 hp Le Rhone engined single seat flying boat
DD.2 was a 160 hp Canton-Unne engined two-seat anti-submarine flying boat
DD.3 was a 140/150 hp HS two-seat flying boat biplane
DD.4 was a 160 hp Lorraine engined two-seat flying boat biplane
DD.5 ------?

From TU 205 magazine,maybe this one was DD.5;

- was a 230 hp Lorraine engine flying boat,one aircraft was built.
 

hesham

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From TU 211,

maybe there was anther Project for torpedo bomber from 1932,rather than the
Project of 1930 ?.
 

Aubi

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Hi everybody, first time posting here.
That article from Avions no.89 claims some ten variants Donnet-Denhaut flying boats, but only four of them got standard name - DD.2, DD.8, DD.9 and DD.10. All others DD numbers mentioned by Hesham are designations "invented" or proposed by the author of the article who tried to explain the difference. Designations in the DD line were assigned retroactively, after the war. Known variants according to that article are (names as used by the French navy):

1) unnamed prototype from 1915, powered by 80 hp Le Rhone engine; retroactively named DD.1
2) Donnet-Denhaut Canton Unné 160 hp - 36 (or 90?) machines from the first series; retroactively named DD.2
3) Donnet-Denhaut Hispano-Suiza 140/150 hp - second series, minor differences given by new engine; some 195 ordered, older sources claim 365, presumably including latter variants with Lorraine engines; also designated as DD.2,
4) Donnet-Denhaut Lorraine 160 hp - larger wings, new engine; 130 ordered
5) Donnet-Denhaut Hispano-Suiza 200 hp Reconnaissance Rapide - basically just DD 150 hp with new engine; 65 machines
6) Donnet-Denhaut Hispano-Suiza 200 hp biplace (or bombardement) - basically just DD 160 hp Lorraine with new engine, around 500 built; retroactively named DD.8
7) Donnet-Denhaut Hispano-Suiza 200 hp triplace - similar to 200 hp biplace, another gunner behind the wings, twin machine guns; used around the Dunkirk areaby the French and the US Navy; 100 (80?) ordered; retroactively named DD.9
8) Donnet-Denhaut Lorraine 230 hp - similar to 200 hp biplace, engine with four-bladed propeller, prototype only
9) Donnet-Denhaut Hispano-Suiza 275 hp - verry different plane with equal-span wings, new tail, armament as 200 hp triplace; 30 ordered just after the Armistice, most used by the machine gunners school at Hourtin
10) Donnet-Denhaut Hispano Suiza 400 hp bimoteur or Donnet-Denhaut BM - large twin-engined patrol seaplane for high seas, 200 hp engines mouned in tandem; 30 ordered, most probably never delivered due to the Armistice, DD.10

For me, mystery machines are the Donnet-Percherons, the P.10 and P.15. Le Fana de l'Aviation 1987/03 claims they were built as prototypes but never flown, but I didnt found any other info.
 

hesham

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Welcome aboard Aubi,

and thank you for this Info,about Donnet-Percheron,here is more Info.
 

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hesham

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From Aviation magazine 1970,

all activities to Denhaut.
 

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burunduk

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Hi, colleagues!

May be you have a photo or a sketch of the Donne-Denhaut P.15 flying boat? I'd be very grateful.
 

hesham

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From TU 193.
 

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