Dewoitine bomber projects

[Apophenia]

It seems the Dewoitine entry at the same contest.

Very interesting. I wasn't aware that Dewoitine had prepared a design to meet Programme Technique A20. Do you know which design number?

The only Dewoitine 'bomber' I can think of was the D.770/D.771 but that was to another 1937 Programme Technique, A51 for an AB2 or Assaut Bombardement.

Other 4-engined bombers developed at that time were the Centre NC.223 (not sure to which requirement) and the Bloch MB-135 and Breguet Bre 482 (both to Programme Technique A21 for a 4-place medium bomber). No doubt I'm forgetting others.

 

[Deltafan]

Hi

(...)
Very interesting. I wasn't aware that Dewoitine had prepared a design to meet Programme Technique A20. Do you know which design number?
(...)

D.800 :

Length : 20,15 m
envergure : 29,81 m
engines : 4 x 1030 hp Hispano-Suiza 14AA-08
weight empty : 10898 kg
weight max : 18391-18666 kg
speed max : 457 km/h (5000 m)

90% of a 1/1 scale model was built. But because of the problems with the Hispano-Suiza 14AA engines, (Dewoitine asked Gnôme-Rhône 14 N engines with similar power, but the government wanted to allow only less powerful engines for the D-800) Dewoitine stopped the project.


For the A21 programme, Dewoitine had the following projects :

D.810 : with two engines (G&N 14P, 18L or 18P were foreseen)
D.820 : with four 860 hp H-S 12 Ydrs engines (22,71 x 13,32 m / 6 262 - 11 012 kg / 535 km/h (4000 m))
D.821 : with four 660 hp G&N 14 M6/7


Source : LES AVIONS DEWOITINE Raymond Danel et Jean Cuny, DOCAVIA / Editions Larivière 1982 (p. 239 to 242)

 

[Deltafan]

Cheers Deltafan -- great stuff on the D.800 series. Any images in LES AVIONS DEWOITINE?
(...)

Yes, the D-800 in LES AVIONS DEWOITINE and the D-820 in LEO 45, AMIOT 350 ET AUTRES B4 of Cuny and Danel too. But i have problems with my computer. I will try to give the two drawings later.

 

[Apophenia]

Thanks Deltafan. I look forward to that.

 

[Jemiba]

"Did AFM give any powerplant details?"

Four Hispano Suiza 12Y in two tandem groups, driving contra props.

 

[Apophenia]

Four Hispano Suiza 12Y in two tandem groups, driving contra props.

Wow! I wouldn't have thought that there was space. Clever way to get contra props without complicated gearing, though.

Thanks Jens!

 

[Deltafan]

Cheers Deltafan -- great stuff on the D.800 series. Any images in LES AVIONS DEWOITINE?
(...)

Yes, the D-800 in LES AVIONS DEWOITINE and the D-820 in LEO 45, AMIOT 350 ET AUTRES B4 of Cuny and Danel too. But i have problems with my computer. I will try to give the two drawings later.

Well, i did not forget ;D
.
It seems that tonight my connexion goes good. I try to give the two drawings (i hope that they will stay... :-\)
Can somebody says to me if he can see the drawings ?

 

[lark]

All fine..."Loud and clear" thanks.

 

[Deltafan]

OK, thanks Lark

 

[toura]

HI ALL
From an old "aviation magazine"
who know more about the Dewoitine d 660 project
for a fast bomber dated 1935 ?

 

[airman]

Dewotine D.660 was interesting for those times !

 

[Grey Havoc]

Looks like it it might have been another victim of the (government inspired) chaos the French aviation industry was in at the time.

 

[toura]

Hi Grey Havoc
Yes, you're right

 

[alertken]

AdlA's Spec. of May,1938 was issued, inter alia, to Consolidated. Payload/range could either: o'erleap the Siegfried Line...or hit Baku from Syria. Some US/UK writers have the sense that after Austrian Anschluss politicians despaired of sourcing a heavy bomber locally, because many Frenchmen feared Fascism and enthused for Bolshevism-as-its-counter, while many held quite the reciprocal position. See the schisms in France caused by the Spanish Civil War. Neither half could be relied upon to build a bomber which could be used against "our" side, so the job went to LB-30, later adapted/adopted by USAAC as B-24.

Could French posters speak to this, please.

 

[alertken]

Thank you. Revisionist UK historians defend Appeasement as policy to divert Fascists eastwards. PM Baldwin, 29/7/36: “If there is any fighting in Europe to be done I should like to see the Bolshies and the Nazis doing it” H.M-Hyde,Br.Air Policy Between the Wars,Heinemann,1976,P389. He was speaking to a group of MPs inc. Churchill, and J.Moore-Brabazon, who was sacked as Minister of Aircraft Production, 2/42, for saying: “it suits us” that USSR was doing most of the dying.