No BMW aero engines past 1930?

[tomo pauk]

Perhaps BMW goes under with the economnic crisis of 1929-31, or perhaps they sell their aero engines business to another company in order to focus into making cars? At any rate, BMW is no longer a player in the German aero industry. How might th things develop, with regards with aero engines for German aircraft past 1935, and especially past 1940?
This being a zero sum game, Germany spends the 'war budget' more in the other engine companies. More/better DB and/or Jumo engines? Bramo steps in in a major fashion?

 

[Koopernic]

The electrical engineering company Siemens had radial and rotary engine spinoffs Siemens-Schukert and Siemens and Halske which were restructured into BRAMO (BRAndenberg MOtor) and this was many years latter then absorbed by BMW. The BRAMO side of things was actually pretty good, they developed the BMW 003 jet and the BMW 139 18 cylinder rdial that powered the first prototypes of the Fw 190. Since BMW managment were calling the shots it was never produced in quantity.

So if BMW isn't around BRAMO doesn't get absorbed and probably has less competition and stays independent. I suspect not much changes. Im not sure of the power potential of the BMW/Bramo 139 versus the BMW 801 but if it is less then maybe development of the Jumo 222 or DB604 is pushed or possibly the DB603 or Jumo 213 to fill the gap.

Argus is around and has enormous potential as an engine maker. Witness the Argus AS412 and AS413 24 cylinder H block engines of 4000hp.

Hirth Motoren made small engines but it was shaping up to be a manufacturer of Turbo-Chargers eg for the Hirth HM 508 to power the 2100NM range He 116 mail plane to fly over the Himalayas.

There is also Klockner Molner to step in. Germany is not short of people able to make engines that could switch to aviation. MAN as well.

 

[tomo pauk]

The electrical engineering company Siemens had radial and rotary engine spinoffs Siemens-Schukert and Siemens and Halske which were restructured into BRAMO (BRAndenberg MOtor) and this was many years latter then absorbed by BMW. The BRAMO side of things was actually pretty good, they developed the BMW 003 jet and the BMW 139 18 cylinder rdial that powered the first prototypes of the Fw 190. Since BMW managment were calling the shots it was never produced in quantity.

BMW 139 was BMW's project. It was a 14 cylinder engine, with a built-in failure (three bearings between the crank throws).
Bramo's 14 cylinder engine was called 329.

So if BMW isn't around BRAMO doesn't get absorbed and probably has less competition and stays independent. I suspect not much changes. Im not sure of the power potential of the BMW/Bramo 139 versus the BMW 801 but if it is less then maybe development of the Jumo 222 or DB604 is pushed or possibly the DB603 or Jumo 213 to fill the gap.

DB 603 with uninterrupted development might be possibly the best bet. Although, we might probably see even more of Jumo 211s and DB 601s/605s produced, as well as the Bramo 323s and the Bramo's 2-row radial. It might be also that Germany tries to make G&R 14N and 14R in Germany proper past 1940.

With all this said - what aircraft gets what past 1940? Bf fighters certainly stay as-is, while the Fw 190 gets the DB engine instead of the BMW? What about Do 217? The Ju-288 1st tested with DB 603? If the problems of the DB engines appear as historically, perhaps a more substantial and earlier push towards service-worthy jet engines?

 

[Koopernic]

BMW 139 was BMW's project. It was a 14 cylinder engine, with a built-in failure (three bearings between the crank throws).
Bramo's 14 cylinder engine was called 329.



DB 603 with uninterrupted development might be possibly the best bet. Although, we might probably see even more of Jumo 211s and DB 601s/605s produced, as well as the Bramo 323s and the Bramo's 2-row radial. It might be also that Germany tries to make G&R 14N and 14R in Germany proper past 1940.

With all this said - what aircraft gets what past 1940? Bf fighters certainly stay as-is, while the Fw 190 gets the DB engine instead of the BMW? What about Do 217? The Ju-288 1st tested with DB 603? If the problems of the DB engines appear as historically, perhaps a more substantial and earlier push towards service-worthy jet engines?

The absence of the BMW 801D2 would release a large amount of high octane fuel potential. This would allow higher boost levels for the Jumo 211 or higher CR. It may even have meant the getting a DB605A optimised for this fuel.

 

[GrauGeist]

There were other engine manufacturers that could have stepped up:
Maybach
Hirth
KHD/Breuckner
Walter
Then there were Italian engines like the Alfa Romeo 1101 that might have been useful if it had been allowed to fully develop.