Breguet Stratospheric Transports

[Adler]

Hello, my first time starting a thread on here so excuse me if I did something wrong.

Between 1941 and 1945 Breguet studied a series of 3 aircraft projects of very large proportions designed to carry large quantities of passengers and freight at high altitudes. The projects were known as the Breguet Stratospheric Transports, and officially designated as Breguet 850 and 851. All 3 aircraft were to be of a twin fuselage configuration, with passengers and freight compartments being situated within both the wings and fuselage. The project advanced to mockup and wind tunnel testing, however was cancelled in 1945.

The information comes from Jean Leyvastre's book "Les Avions Breguet 1940-1971", which is in French. I have attached text and diagrams from the book below, if anyone is able to translate them.

If anyone has any additional information on this project, please post.

 

[hesham]

Welcome abaord Adler,

and from TU magazine,here is another caption to them,

https://www.secretprojects.co.uk/threads/bréguet-flying-boat-projects-and-prototypes.8598/

 

[Adler]

Found this other diagram, appears to be the 220 ton proposal.

 

[publiusr]

With electric motors of today much smaller than radials—multi-propeller designs may make a comeback…or so I hope.

Foolish, I know—but every time I see a twinjet (fuel sipping or no) overhead…I can feel another part of my soul dissolving.

 

[Adler]

One flaw of this design that I only now figured is that the 220/230 ton aircraft, in accordance with the above diagram I posted, was to only have 8 gear wheels on 4 chassis stands. This means that each wheel would carry a load of 27 tonnes assuming equal weight distribution, while in reality, some wheels would carry even more weight.

There's a reason why large aircraft nowadays have 10 - 20 wheels; had the Bregeut 850, or even the 851 been built, the French would have ended up with a Douglas XB 19 situation.

 

[Adler]

Breguet 850 model using aforementioned books and articles, with inspiration from other Breguet aircraft of comparable era and role wherever details were missing. Found the software very recently and not fluent with it, so I expect the model is not perfect. Let me know of any inaccuracies so I can resolve them.

 

[gabrielorosco]

Breguet 850 model using aforementioned books and articles, with inspiration from other Breguet aircraft of comparable era and role wherever details were missing. Found the software very recently and not fluent with it, so I expect the model is not perfect. Let me know of any inaccuracies so I can resolve them.


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Looks awesome! Now make the 1.000 ton version