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Author Topic: Any additional information about the Svenska Flygmotor Mx project?  (Read 1337 times)

Offline Hardrada55

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 Here's what I have so far.

"Svenska Flygmotor started the Mx project during the summer 1941, intended for the Jx and Bx fighters, to be ready in 1947."

I wonder what the Jx and Bx aircraft were? 

"Its configuration would have been two V-12s in an X-configuration.  Diameter 1.28 m, 54 litre stroke volume, injection pump, overhead cams, turbo compressor, power up to 2500 hp."

Half of 54 Liters is about 1650 ci.  Was this project two Merlins in an X configuration, like the Vulture was two Peregrines in the X configuration?  In effect, similar to a 3300ci Vulture?  I think the Ford V-12 was 1650 ci with double overhead cams, so it could be an X version of the Ford engine. 
 
« Last Edit: January 03, 2016, 08:54:16 am by Hardrada55 »

Offline Apophenia

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Re: Any additional information about the Svenska Flygmotor Mx project?
« Reply #1 on: January 04, 2016, 09:43:34 am »
Mx Project cylinder tests were conducted late 1943. In late 1944, a single 6-cylinder bank ready for testing. The Mx Project closed down in 1945.

I suspect that the "Jx and Bx fighters" were actually future fighter and bomber projects - B for Bombflygplan, J for Jaktflygplan. These projects were probably at an early definition phase ... or the Flygvapnet would have assigned them P for Provflygplan designations.

Offline Hardrada55

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Re: Any additional information about the Svenska Flygmotor Mx project?
« Reply #2 on: June 12, 2018, 06:26:32 am »
Found this information online.  "...at the end of 1941, was commissioned to develop a 24-cylinder air-cooled piston engine of 2 200 hp called Mx. It was built as a six-cylinder star engine in four underlying wreaths."  Sounds like an engine similar to the AS Wolfhound. 

Offline Kevin Renner

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Re: Any additional information about the Svenska Flygmotor Mx project?
« Reply #3 on: June 17, 2018, 08:09:45 am »
Found this information online.  "...at the end of 1941, was commissioned to develop a 24-cylinder air-cooled piston engine of 2 200 hp called Mx. It was built as a six-cylinder star engine in four underlying wreaths."  Sounds like an engine similar to the AS Wolfhound.

Or an air cooled Jump 222

Offline Apophenia

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Possibly of interest ...

Kritiska År: Formativa moment för den svenska flygplansindustrin 1944–1951 by Kristoffer Strandqvist, 2008
https://www.aef.se/Kopierade_dokument/Kritiska_ar.pdf (see pp 106-108)

(Para-phrased) Authorization came from Flygförvaltningens in November 1941 for SFA to develop an aero-engine producing 2,200 hp (with further development potential). Three configurations were examined - a liquid-cooled dubbel DB-motor; an air-cooled H-engine (dubbel boxermotor); and an air-cooled radial. At the end of February 1943, the radial layout was selected.

Later, it seems, a conclusion is drawn that Jx could be built with licensed DB605s without too much disruption of the Swedish aero-engine industry (ie: the DB605 would fill the gap until new jet engines appeared). Development work continued until 1945 for its own sake, rather than to result in a finished engine ...

The mention of an H-engine layout is interesting. Possible the same type connected with early incarnations of the J27?

Going back to the Jx and Bx ... on pg.96 there is mention of "projekteringsutkast för 1- och 2-motorigt fpl för MX" or single- or twin-engine aircraft projects for the Mx engine.

BTW, what was the Flygplan 24 project?