How many power the AH FW190D9 have??

[HoHun]

Hi Knegel,


>this calculated comparison show a very similar fast 109F4 in low/med alt.

The Me 109F-4 was actually tested. However, it was apparently run at 2700 rpm/1.42 ata, which might not have been cleared all of the time.

Using a slightly slower Me 109F-4 test as basis, the Me 109F-4 running at 2500 rpm/1.35 ata would outrun and outclimb the Spitfire IX with Merlin 61 easily below 7 km, but above that, the Spitfire would be superior.

The Spitfire V would actually hold a slight speed advantage at sea level, breaking even at 2 km. Otherwise, it's completely outclassed by the Me 109F-4.

The Me 109F-4 would be slower than the Fw 190A through the entire altitude range, except around the Fw 190A's gear change altitude. It would of course outclimb the Fw 190A by a generous margin.

Regards,

Henning (HoHun)

[Crumpp]

this calculated comparison show a very similar fast 109F4 in low/med alt.

That is true for flight testing on the BMW801D and BMW801D halb.  

I have flight test's from 1941 and the BMW801D is not faster than the BMW801C 2.

Now the BMW801D2 is a different story, especially after June 1942 when the knock limited performance is greatly improved.


All the best,

Crumpp

[Mister Fork]

Anyone have the engine torque curve chart for the Fw190D-9?

[HoHun]

Hi Crumpp,

>That is true for flight testing on the BMW801D and BMW801D halb.  

Since the BMW 801 history continues to confuse me, what was the BMW 801D halb?

Regards,

Henning (HoHun)

[Crumpp]

Since the BMW 801 history continues to confuse me, what was the BMW 801D halb?

Well for BMW801C series we find the BMW801C0, BMW801C1, and BMW801C2.  The BMW801C2 being the major production variant with a few C0's/C1's to be found.

The BMW801D halbneu is one of several sub types of the D series but only the BMW801D2 entered large-scale production.  From what I see, BMW developed the BMW801D halbneu by placing the new supercharger gearing of the D series on a BMW 801C2motor instead of the 3 stage originally envisioned.  It becomes the BMW801D which did enter production for a short KB run and equips a handful FW-190A2's and the FW-190Aa3.  The BMW801D1 never entered production AFAIK and the improved cylinders and higher compression ratio becomes the BMW801D2.

By 1943 the individual motor designations drop off the Luftwaffe supply reference codes.  By then you cannot order anything but a BMW801C2 or BMW801D motor.

 


BMW has a very confusing system of designating engines.  The BMW801E/F series often appear to change designations interchangeably at times.  I have several reports that refer to the BMW801F but are actually testing either the H series or S series.  Eventually the E/F series becomes just the F-series which splits into the H-1, S-1, and S-2 motors.  The BMW801E series becomes coupled with the all hydraulic FW-190A10.  The war ends before it's production date is reached.

It becomes even more confusing when you add the Luftwaffe supply codes.  An F66 is not the same motor as an F602, yet both have a BMW801D2 as the base motor.

All the best,

Crumpp