Junkers EF 61

[Jemiba]

In Luftfahrt International N°33 I've found this drawing depicting the
EF 61, the upper one as long range/high altitude recce aircraft, the lower
as bomber:

 

[Wurger]

Hi Jens,

its amazing the ammount of "good stuff" coming from old magazines. Thanks for sharing.

P.s. Are you sure about the captions? The upper one seems like a bomber (this is "news" to me), and I`ve seen the lower one`s with fully glazed cockpit as a high altitude reconnaissance airplane.

 

[Jemiba]

I'm not sure, it's just, what the author of that article says. Actually, both are looking different from
the EF 61 prototypes, at least with regards to the nose.

 

[toura]

Hi all
From " Le fana de l'aviation" n° 66

 

[blackkite]

Hi! JuEF61 V1 3-side view.

Completed in 1937, Engine : DB601 with turbocharger and inter cooler, Pressurized cabin, Wing span : 27m, Length : 14.36m.
Two aircrafts were completed(V1, V2) and lost by accident(control surface flatter and pressurized cabin window break).

Source : AIREVIEW'S GERMAN MILITARY AIRCRAFT IN THE SECOND WORLD WAR, KANTOSHA, TOKYO, JAPAN, 1958

 

[blackkite]

Hi! JuEF61 picture.

Source : ILLUSTRATED WARPLANE HISTORY, LUFTWAFFEN WARPLANE, GREEN ARROW, ISBN4-7663-3252-0

This source says that JuEF61 had no turbocharger. Which is correct this source or that source? :-\

 

[toura]

IF I understand (?) here, I show the 2 prototypes
and Jens give us 2 proposed futur developments !

 

[Maveric]

...

 

[Jemiba]

IF I understand (?) here, I show the 2 prototypes
and Jens give us 2 proposed futur developments !

I think. Paul is right, the prototypes were just that, aircraft for testing the high altitude equipment
(engines, pressure cabin), the drawings show, what the service types could have look like.
As I read, there were for example problems with producing large glazed canopies, so only small
windows could be used.

 

[toura]

And the studies for Junkers ef 61 finised with the
Junkers Ju 86 P and R ,,,???

 

[Jemiba]

In the Luftfahrt International article it is said, that the EF 61 "led to the Ju 86 P and R". That sounds,
as if those types were direct developments of the EF 61 and that's a little bit misleading, to my opinion.
The EF 61 was a new design, started during 1935, whereas the Ju 86 first flew already in 1934. But the
gained experience and maybe complete subsystems were used for the modified high-altitude versions
of the Ju 86.

 

[toura]

yes, Jens, I think so. THANKS. BYE

 

[blackkite]

Hi!


http://www.unicraft.biz/index.html

 

[toura]

More for EF 61 from "Le fana de l aviation"

 

[Justo Miranda]

Hi

 

[toura]

Hi Justo.
THE SAME........

 

[Justo Miranda]

 

[blackkite]

Junkers JuEF61

Type: High-Altitude research aircraft. Origin: Junkers Flugzeug und Motorenwerke AG Models: V1 and V2 First Flight: 1936 Engine: Model: Daimler-Benz DB 600A Type: Inverted V12 liquid-cooled Number: Two Horsepower: 950 hp Dimensions: Wing span: 88 ft. 7 in. (27.00m) Length: 47 ft. 0.75 in. (14.34m) Height: Unknown Wing Surface Area: N/AWeights: N/A Performance: Maximum Speed: About 217 mph (350 kph) Initial Climb: N/A Service Ceiling: Designed to exceed 49,200 ft. (15,000m) Range: N/A Armament: Provision for single MG 15. Payload: Four 551 lb. (250 kg) bombs internally. Comments: Both aircraft crashed. Sources: Gunston, Bill & Wood, Tony - Hitler's Luftwaffe, 1977, Salamander Books Ltd., London

 

[Stargazer]

Topic split from the "EF Designations" topic.

 

[Aurum]

As far as I understand, EF-61 had ordinary DB 600 installed on. If so, how could it operate at the altitudes over 10 km with adequate efficiency (speed and range)?
Usually the aircrafts which ware to operate at hight altitudes had engines that needed additional boost with air cooling in intercooller and enlarged radiators square.
Does something known about this regarding EF-61?