Do 335 A-10, A-11 or A-12?
 

Hello,

Different publications name the Do 335 two seat trainer aircraft as A-10, A-11 or A-12 variant. Which of these is correct and what exactly was their difference? Unfortunately, I don't have access to wartime documents of the Do 335 that would answer my question.

Roger

Re: Do 335 A-10, A-11 or A-12?
 

This link suggests some engine differences between A-10 and A-12 aircraft.

Don

Re: Do 335 A-10, A-11 or A-12?
 

Hello,
this is what i know about the difference beetween A-10/A-12:

A-10 was built from a A-0 preserial cell
Do 335 V11 CP+UL
2x DB 603 A-2
Do 335 V12 CP+UM
2x DB 603 A-2
They were rebuilt by Dornier and went to Rechlin.

A-12 was built from a A-1 serial cell

I don´t know the type A-11.

Source:Die deutsche Luftrüstung 1933-1945 Heinz J. Nowarra

Herzliche Grüsse aus Oberschwaben,

Wolfgang

Re: Do 335 A-10, A-11 or A-12?
 

The following Versions is listed in the RLM Flugzeug-Programm Nr. 227 dated 15.12.1944:
Do 335A-0 Engine: 2 x 603A/E On order 10; Deliverd to 30.11.44: 3.
Do 335A-10 Schul 2 x 603E. On order 20. Delivered to 30.11.44: 0
Do 335A-Z Fernerk. 4 x 603E/G. On order 4. Deliverd to 30.11.44: 0
Do 335A-1 Zerst. 2 x 603E/G. On order: 20. Delivered to 30.11.44: 1
Do 335A-6 Nacht 2 x 603E/G. On order 190. Delivered to 30.11.44: 0
Do 335A-1 Schul 2 x 603E/G. On order 70. Delivwered to 30.11.44: 0
Do 335B-2 Zerst. 2 x 603E/G. On order 560. Deliverd to 30.11.44: 0
Do 335B-4 Zerst. 2 x 603L. On order 400. Delivered to 30.11.44: 0
Do 335B-6 Nacht 2 x 603E/G. On order 675. Delivererd to 30.11.44: 0
Do 335B-8 Nacht 2 x 603L. On order 755. Delivered to 30.11.44: 0.

I am sure there must have been significant differences in the armaments and other equipments.

Re: Do 335 A-10, A-11 or A-12?
 

A-10 > Jumo 213, none completed
A-11 > DB605A, 2 prototypes completed (M11, 12)
A-12 > DB605E, 8 completed or under construction

Smith, Creek, Hitchcock Do335 book

Re: Do 335 A-10, A-11 or A-12?
 

Hello!

Only one Do 335 was built with Jumo 213.
Do 335 V7 CP+UG 2x Jumo 213
This machine was delivered to Junkers as flying engine tester.
CP+UG was destroyed in Dessau by an allied bomb attack.

Herzliche Grüsse aus Oberschwaben,

Wolfgang

Re: Do 335 A-10, A-11 or A-12?
 

Thank you all for the information you provided. Apparently, there are some conflicting sources.

Smith/Creek mention the Industrie Lieferplan 226/2 dated 22 September 1944 on p.53 in their Do 335 book:
A-10: based on the A-1, built at Dornier Löwenthal
A-11: based on the A-1, but built by the Luther Werke in Braunschweig
A-12: based on the B-6, built by the Luther Werke
A-13: based on the B-4, built by the Luther Werke

On p.64 they mention a TLR document dated 1 November 1944 that confirms that the A-10 were to be built at Löwenthal, while the A-11 and A-12 were to be built by the Luther Werke.

On p.86 they show an extract from the Lieferplan dated 15 November 1944:
A-11: conversion of the A-1 with DB 603 E/G, Luther Werke
A-12: conversion of the B-6 with DB 603 G, Luther Werke
A-13: conversion of the B-4 with DB 603 L, Luther Werke

The completed trainer Do 335 were probably all conversions from A-0 aircraft that were fitted with the DB 603 and were most likely converted at Oberpfaffenhofen (maybe except the first 2, V11 and V12). They were most likely A-10 subtypes. But the Lieferplan 22 Sep 1944 stated that they were conversions from A-1 and built at Löwenthal. If we assume that Lieferplan from September was outdated already by winter 1944 in terms of designations of subtypes, there is still a conflict with the information based on the RLM Flugzeug-Programm Nr. 227 from 15 December 1944 (provided by Seaplanes above), which states that the A-10 was fitted with 2 x 603 E.

Quite confusing. I assume that designations for subtypes changed from 1944 to 1945 and some documents related to planned aircraft, while others to actually built aircraft.

Regards,

Roger