Boeing YB-40 Flying Fortress (Full Version)

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Yaab -> Boeing YB-40 Flying Fortress (9/21/2017 6:52:27 PM)


Operational only in ETO. Learned about it just yesterday.

https://en.wikipedia.org/wiki/Boeing_YB-40_Flying_Fortress



Grfin Zeppelin -> RE: Boeing YB-40 Flying Fortress (9/21/2017 7:07:23 PM)

Allied shenengians, in Germany it would have also required dive bombing capability. This is what this plane obviously lacked to be successfull

Regards
Hermann Göring



Yaab -> RE: Boeing YB-40 Flying Fortress (9/21/2017 7:17:08 PM)

For years I have believed that He-177 was a twin-engine bomber. I guess YB-40 must have its own secrets.



rustysi -> RE: Boeing YB-40 Flying Fortress (9/22/2017 5:34:47 PM)

Known about them for a long time now. An attempt to turn some B-17's into gunships to escort deep raids. Not successful for various reasons.

quote:

in Germany it would have also required dive bombing capability.


Failure of being able to differentiate between a tactical and strategic air force.

quote:

For years I have believed that He-177 was a twin-engine bomber.


The result of trying to give a four engine strategic bomber a tactical capability. Better stated as a failure of doctrine.



spence -> RE: Boeing YB-40 Flying Fortress (9/22/2017 8:07:23 PM)

The He-177?

I think that Goering/Udet destroyed its usefulness and delayed its deployment by demanding that it be capable of dive-bombing.

Wasn't its powerplant overly complicated by putting two engines in each engine nacelle and then having counter-rotating propellors. Was that arrangement necessary to get it to dive-bomb?



tanksone -> RE: Boeing YB-40 Flying Fortress (9/22/2017 9:10:59 PM)

And another what if...[:D]



[image]local://upfiles/12681/99F14D20ACA746E0B1B07F4BD6E437F4.jpg[/image]



spence -> RE: Boeing YB-40 Flying Fortress (9/22/2017 10:49:48 PM)

A more aerodynamic nose arrangement of 8 x .50 cals on the PV-2D (only 30 or so delivered out of 500 ordered because the war ended).



[image]local://upfiles/9007/1E59F112ED6E4A729267CA1EDD9CF39B.jpg[/image]



Reg -> RE: Boeing YB-40 Flying Fortress (9/23/2017 2:04:05 AM)


Other B-17 field modifications.... [:)]

[image]http://2.bp.blogspot.com/-DWeu655ISnM/U19nIsKDMXI/AAAAAAABCnU/DaO_3g6sggQ/s1600/vPnIXXV.jpg[/image]

The 20mm nose gun was ordered removed once the engineers got wind of it as the B-17 nose was not stressed for a weapon of this size. Supposedly the pilots couldn't read their instruments while the weapon was firing due to the vibrations. [X(]



Yaab -> RE: Boeing YB-40 Flying Fortress (9/23/2017 7:20:48 AM)

Matches the reports of B-25 noses being damaged from gun vibrations.



Denniss -> RE: Boeing YB-40 Flying Fortress (9/23/2017 8:48:32 AM)

The dive bombing requirement excluded the use of 4 single engines - no wing would be able to cope with the stresses during recovery from dive.
Germany had no large engine powerful enough for such a big bomber (the Jumo 222 never materialized) so they had to couple two smaller engines.
This beast actually worked from late 43/early 44 after fixing many problems especially with the too tight engine installation.



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