HP 5156

Report from JG 11 on 29th [October 1944] on mock air battle between Fw 190A-9 and Me 109 AS/MW 50.

A Schwarm of Me 109 at 8,000 metres climbed up to attack a Rotte of Fw 190 at 10,000 metres. On the turn with 1.1 boost, the Me 109 Schwarm outclimbed the Fw 190 Rotte by about 200 metres and at the same time without fully opened throttles and not flying flat out, they outturned the Fw 190 Rotte. First attack was from above and behind with 1.1 boost and flaps retracted and a normal steep turn without opening to maximum possible speed, the Fw 190A-9 was easily overtaken and outturned.

Second attack from behind and below on the number one of the Rotte, aircraft was easily overtaken, outturned and outstripped in the inside turn. On full throttle it is easily possible to outclimb the A-9 without losing position since speed can be reduced by throttling back and doing very tight turns.

Appreciation: Me 109 AS/MW 50 obviously superior at high altitude to the Fw 190A-9.

Secondly, now known that on July 14th, Air Officer for Technology issued instructions for preventing burning out of pistons on DB 603 and DB 605AS with methyl alcohol water injection.

HP 5282

Report from Wunstorf on 28th on experiences with MW 50 on Me 109. When aircraft is in climbing position with 1.7 atmospheres boost, oil supply is endangered because of insufficient return.

In two cases in Wunstorf a broken big end resulted from too extended climb, climb should therefore be as shallow as possible. Comment: contrast report on performance in HP 5156.


Two deciphered German signals (ULTRA intelligence) from October 1944. Comparisons between friendly aircraft are an unusual thing to find amongst this material and here JG 11 seems to support what postwar writers have always said, that the Messerschmitt fighter was better at high altitudes than the radial-engined variants of the Focke-Wulf.

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