Fw-190 Dora-9 vs P-51D Mustang

Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules

eh, Contrary to what?

I would rather represent myself, thank you... Besides just to make it clear, and short, my position being:

8th AAF FC had it,
15th AAF FC did not (to my best knowledge)
the RAF FC/ADGB didnt, save for a handful of Sqns on anti diver missions, when that ended, even those didnt get it anymore
the 2nd TAF didnt get it either, not until jan/febr 45, and only for Spit sqns (tiffies/tempest wouldnt benefit anways). As per Berger, the stuff was troublesome and they reverted back to lower graded b4 the war ended.. in short in real operstional use, they had, for about two months at the wars end, at +25 a spit 9 that was equal to the boosted G6s and G14s the jerries had for a year by then, and were already phasing out by 1945...

A couple of ironies I like to mention...

- Though the brits produced the stuff mostly, yanks used almost all of it for their fighters
- while MW and his bunch were campaigning for this 150 stuff for years, quite obviously in hope that this was the magic stuff Allied planes had and LW ones didnt, our research reveals the jerries had it a year before the brits, and produced and used the magic stuff in far greater quanties.. not that it would matter IMHO that much, just being a bit here
 
Last edited:

Kurfurst - if my memory of your dispute with Mike Williams regarding the delivery of 150 fuel is correct you made several statements that the 8th AF did not have the fuel operational until the fall of 1944.

If my memory is not correct and you supported his claims that the fuel was delivered in June and operational in all 15 Fighter Groups then let me apologize. Are you now in agreement with the timing?

As to 8th had it and Jerries didn't - that isn't my thesis. Mine is the 8th had it and used it effectively to boost emergency power quite effectively and it was in service from late June through the end of the war. Period. The end.

Regards,

Bill
 
To cut it short, I have no problem with the 8th AAF deliveries... the numbers are there (20 000 tons per month IIRC, and that through the conflict from about June 44.)

The only thing I am unsure about are P-47s and esp. the P-38s - the latter were, more or less, withdrawn at around the time the new juice arrived. The other thing that is hazy is wheater 72" or 75" was the limit on Mustangs; that they used the fuel and enjoyed a significant boost in performance (and some maintance difficulties, re: spark plug life) is not.

The RAF otoh is another question though.
 

The aircraft was maintained by a former Luftwaffe crew chief that my father personally paid to keep the three servicable aircraft (Me 109G two seater, Fw 190A two seater, and Fw 190D-9) in excellent shape. I suspect he (Blackgang) was motivated by pride in the ships he maintained and may have had a vested interest in staying on the payroll by keeping them in good flying shape.

As to flying the airplane to its limits - hard to say and I would speculate 'no way of knowing' . He was motivated to beat Fortier's and Hovde's and Elder's butts in the rat races - he was extremely competitive. He was a 2200 hour pilot before leaving Training Command and joining the 355th. He only had 3 hours in a Mustang when he flew his first mission and shot his first german a/c down and had only 20 more hours when he downed two 109s and a probable over Bergen on June 20.

He was regarded as the best 'stick man' by many that flew with him - so I would say in 25 hours he would have found most of the 'do's and don'ts' in the Dora but could not say whether a very good pilot could become very skilled in the Dora in that time.

Ditto the 109G and the 190A. They were rather unique with two seat config so who knows what the handling characteristics were.

I have enjoyed this discussion - you are knowledgable about your subjects

Regards,

Bill
 

Kurfurst - let me do a little digging. First "72" was the recommended max boost for 5 minutes (max) and engines were blown.. there are documented examples of "75" but my father never used that much boost to my knowledge.

The 1650-9 in the P-51H was rated at 80" with the Simmonds boost control and 90" when WI (and all eles) functioned properly. The placard was 80" for WEP

I believe the 47D-25 and above used the 150 octane fuel but I am NOT certain
 
Last edited:

The Germans had 150 grade C3 fuel in 1943?

http://www.fischer-tropsch.org/Tom Reels/Linked/A5464/A5464-0638-0654 Item 6A.pdf

Why was 150 octane not found in the test results?

See also Report No. 2197 dated Sept. 16 1943.
 
Butcher, you're getting close to the edge. If you can't post something that contributes to the thread, don't post. If you have a beef with a Mod, I would suggest taking it up in a PM - not open in a thread.

verstehen Sie?
 
With all respect to the rules of the forum i must say that shooting german pilots after paqachuting was a quite common practice for american pilots.

Trying to civilize war fighting is a mostly useless enterprise. Brutality occurs and to criticize one side or the other is usually a hypocritical effort by those who were not in the situation. As far as shooting airmen in parachutes, my thoughts are this, that airman in the parachute represents a deadly enemy asset who may climb into a plane tomorrow and shoot down a bomber or fighter and kill countrymen of mine, or me. I doubt anyone would blame a soldier for shooting a sniper in the back trying to flee a position because his gun jammed, he could get another gun. A pilot could do the same only be more deadly. He is not surrendering, only moving to another position. I am sure that most of the occurrences of shooting airmen in parachutes were over enemy territory where they could return to combat. In my opinion, it should be command policy if over enemy territory. If this sounds barbaric I am sorry, but war is barbaric.

This does not cover obvious atrocities that are even beyond the uncivilized nature of war like starving civilians to death or gassing them to eradicate a race, test chemicals or germs on civilians to determine effects, or to march POWs to collapse and then bayonet them because they fell. These had no contribution to the conclusion of the war. I won't tell you I don't have a problem with some of the fire bombings or the A-bomb, but I do believe they contributed to the shortening of the war, some more than others.

It bothers me that people sit back in an easy chair and pass judgment on events occurring sixty years ago in situations in the heat of battle where emotions and adrenalin generated from life-threatening battle may generate brutality. We've seen this with policemen in car chases. In the Pacific, there were no prisoners taken by the Japanese, or the Marines. That was the accepted nature of war there.


3)Generally speaking P51 and Dora are in the same performance class. P51 is superior as escort fighter. D9 is superior as general air superiority fighter up to 7000m

Based on test reports and German performance reports, the P-51B, at fighter weight, flies nose to nose with the Fw-190D-9 in airspeed and climb up to 4500m, but by 6000m, the P-51B was clearly superior in these areas, especially airspeed. The P-51D was slight less capable than the B, but not by a whole lot and slightly better than the Fw-190D-9 at 6000m and significantly so at 7600m.

(D13 with jumo 213f is superior at all altitudes, with 213EB ,db603L even challenges P51H performance without sacfificing armor ,armour, and structural strength as -H did (the reason that did not see Korea service)

You need to justify your comment about the armor, the P-51H was lightened by using the Spitfire load factors for design and the Spitfire was not noted for being a weak design. I have no data that indicates reduction of armor was not part of this lightening. As far as the D13 is concerned, being a bit facetious, was there more than one?

I'll comment on Korea later.

D9 has better power loading=better acceleretion+ wing loading (not much of a difference)+ ,wide blade propellers =better roc

Actually, the ROC of the Fw-190D-9 was only better than the P-51B at 3000m and then only about 200 f/m better (4134 f/m to 3900 f/m). Below that they were equal, above that the P-51 was increasing in advantage.
The P-51D had a larger disadvantage, only catching up to the Fw at 6000m.



I don't understand the rationale behind this comment. It is well documented, in engineering test by USAAF and RAF, that increased boost allowed by improved fuel significantly improved performance. As result of these tests, the P-51 was cleared by AAF Materiel Command to go to 75" Hg although there was some operational limitations to 72". So you are saying the testers really didn't know what they were doing? Sure, there were concerns, but apparently worth the effort.

If we accept your claims about 72" HG there was answer in form of C3+MW50 213A=2240ps, 213EB, 213F,DB603EC, DB603LA ,DB603L , 222E/F , all these engines ready for productin but the boys of B17s had other opinion .

It is interesting to note that the Merlin 1650-9, a contemporary of the above engines was capable of 2240 hp and was still two thirds the size of the DB603 and 77% the size of the Jumo 213 and was 300 lbs lighter than either.

Some other contemporary allied fighter engines were the awesome Pratt and Whitney R-2800-57 which produces 2800 hp at 10,000 m (33k ft) in the P-47M/N, the P&W 3460 (powering the XP-72 and the F2G) producing 3000 to 3450 hp, and various British engines. All these engines, including the Germans, were obsolete.

Finally i must say that i am very sceptical about the 487mph of P51H . But maybe i am wrong.

The 487 mph I believe is a North American calculation. I believe a more realistic number is between 470 to 480 mph.


I agree with you completely. I have never understood why the Germans did not develop a dominating high altitude point defense fighter, a much easier job that a dominating escort fighter, in 1943 when they should have anticipated increasing American escorting aircraft. Even the P-47s and P-38s could have been expected to increase in performance and certainly in quantity, they already had very good high altitude performance. The Germans really needed a good high altitude fighter by early '44. I do not think the Dora would have been the answer. It still could not out perform the allied escorts at bomber altitude and above. Maybe an early Bf-109K.

2) Why P51H was not chosen for Korean war service?

In my opinion there are probably two main reasons, first was the proliferation of P-51Ds and parts, and second, the P-51H was designed specifically to be a high performing air-to-air fighter based on the proven lighter Spitfire load factors. By 1950, the AF had abandoned prop planes for air-to-air and thus needed better air-to-ground capability which the heavier built P-51D would be a better selection.


3) I have not the slightest respect for M.Williams and his site. The man is biased ,cooks up evidences and documents , compares aplles with oranges. Kurfust has exposed him many times , has proven his in purpose wrong statements .

All the data I use from this site is data from flight test or military/contractor documents and I suspect drgondog does the same. So, if you have proof that these have been altered to benefit a side, present it. Otherwise, this comment adds nothing to the discussion.
 
With all respect to the rules of the forum i must say that shooting german pilots after paqachuting was a quite common practice for american pilots.

Trying to civilize war fighting is a mostly useless enterprise. Brutality occurs and to criticize one side or the other is usually a hypocritical effort by those who were not in the situation. As far as shooting airmen in parachutes, my thoughts are this, that airman in the parachute represents a deadly enemy asset who may climb into a plane tomorrow and shoot down a bomber or fighter and kill countrymen of mine, or me. I doubt anyone would blame a soldier for shooting a sniper in the back trying to flee a position because his gun jammed, he could get another gun. A pilot could do the same only be more deadly. He is not surrendering, only moving to another position. I am sure that most of the occurrences of shooting airmen in parachutes were over enemy territory where they could return to combat. In my opinion, it should be command policy if over enemy territory. If this sounds barbaric I am sorry, but war is barbaric.

This does not cover obvious atrocities that are even beyond the uncivilized nature of war like starving civilians to death or gassing them to eradicate a race, test chemicals or germs on civilians to determine effects, or to march POWs to collapse and then bayonet them because they fell. These had no contribution to the conclusion of the war. I won't tell you I don't have a problem with some of the fire bombings or the A-bomb, but I do believe they contributed to the shortening of the war, some more than others.

It bothers me that people sit back in an easy chair and pass judgment on events occurring sixty years ago in situations in the heat of battle where emotions and adrenalin generated from life-threatening battle may generate brutality. We've seen this with policemen in car chases. In the Pacific, there were no prisoners taken by the Japanese, or the Marines. That was the accepted nature of war there.


3)Generally speaking P51 and Dora are in the same performance class. P51 is superior as escort fighter. D9 is superior as general air superiority fighter up to 7000m

Based on test reports and German performance reports, the P-51B, at fighter weight, flies nose to nose with the Fw-190D-9 in airspeed and climb up to 4500m, but by 6000m, the P-51B was clearly superior in these areas, especially airspeed. The P-51D was slight less capable than the B, but not by a whole lot and slightly better than the Fw-190D-9 at 6000m and significantly so at 7600m.

(D13 with jumo 213f is superior at all altitudes, with 213EB ,db603L even challenges P51H performance without sacfificing armor ,armour, and structural strength as -H did (the reason that did not see Korea service)

You need to justify your comment about the armor, the P-51H was lightened by using the Spitfire load factors for design and the Spitfire was not noted for being a weak design. I have no data that indicates reduction of armor was not part of this lightening. As far as the D13 is concerned, being a bit facetious, was there more than one?

I'll comment on Korea later.

D9 has better power loading=better acceleretion+ wing loading (not much of a difference)+ ,wide blade propellers =better roc

Actually, the ROC of the Fw-190D-9 was only better than the P-51B at 3000m and then only about 200 f/m better (4134 f/m to 3900 f/m). Below that they were equal, above that the P-51 was increasing in advantage.
The P-51D had a larger disadvantage, only catching up to the Fw at 6000m.



I don't understand the rationale behind this comment. It is well documented, in engineering test by USAAF and RAF, that increased boost allowed by improved fuel significantly improved performance. As result of these tests, the P-51 was cleared by AAF Materiel Command to go to 75" Hg although there were some operational limitations to 72". So you are saying the testers really didn't know what they were doing? Sure, there were concerns, but apparently worth the effort.

If we accept your claims about 72" HG there was answer in form of C3+MW50 213A=2240ps, 213EB, 213F,DB603EC, DB603LA ,DB603L , 222E/F , all these engines ready for productin but the boys of B17s had other opinion .

It is interesting to note that the Merlin 1650-9, a contemporary of the above engines was capable of 2240 hp and was still two thirds the size of the DB603 and 77% the size of the Jumo 213 and was 300 lbs lighter than either.

Some other contemporary allied fighter engines were the awesome Pratt and Whitney R-2800-57 which produces 2800 hp at 10,000 m (33k ft) in the P-47M/N, the P&W 3460 (powering the XP-72 and the F2G) producing 3000 to 3450 hp, and various British engines. All these engines, including the Germans, were obsolete.

Finally i must say that i am very sceptical about the 487mph of P51H . But maybe i am wrong.

The 487 mph I believe is a North American calculation. I believe a more realistic number is between 470 to 480 mph.


I agree with you completely. I have never understood why the Germans did not develop a dominating high altitude point defense fighter, a much easier job that a dominating escort fighter, in 1943 when they should have anticipated increasing American escorting aircraft. Even the P-47s and P-38s could have been expected to increase in performance and certainly in quantity, they already had very good high altitude performance. The Germans really needed a good high altitude fighter by early '44. I do not think the Dora would have been the answer. It still could not out perform the allied escorts at bomber altitude and above. Maybe an early Bf-109K.

2) Why P51H was not chosen for Korean war service?

In my opinion there are probably two main reasons, first was the proliferation of P-51Ds and parts, and second, the P-51H was designed specifically to be a high performing air-to-air fighter based on the proven lighter Spitfire load factors. By 1950, the AF had abandoned prop planes for air-to-air and thus needed better air-to-ground capability which the heavier built P-51D would be a better selection.


3) I have not the slightest respect for M.Williams and his site. The man is biased ,cooks up evidences and documents , compares aplles with oranges. Kurfust has exposed him many times , has proven his in purpose wrong statements .

All the data I use from this site is data from flight test or military/contractor documents and I suspect drgondog does the same. So, if you have proof that these have been altered to benefit a side, present it. Otherwise, this comment adds nothing to the discussion.
 

Users who are viewing this thread