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Author Topic: Junkers Projects and Prototypes 1919 - 1939  (Read 67917 times)

Offline Cy-27

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #30 on: February 24, 2013, 06:09:05 am »
I have just finished an East German book (source details below) on Hugo Junkers career.
 
The text has references to Junkers Project numbers which I had never come across before (probably familar to Junkers aficionados !).
 
For completeness, here are Gunter Schmitt's cross-references of project types:
 
Junkers Project 1 - Junkers J3 - first light metal aircraft
Junkers Project 2 - Junkers J5 - small light , low-wing cantilever monoplane in three planned versions designed but never built
Junkers Project 3 - Junkers J6 - high-wing cantilever monoplane from August 1917. At the wars end the protoype was half-completed at Dessau
Junkers Project 4 - Junkers R1 - four engine giant monoplane heavy bomber project in two versions, both low-wing.
Junkers Project 5 - Junkers R2 - twin engine giant monoplane heavy bomber project.
Junkers Project 6 - Junkers R3 - four engine giant flying boat project.
Junkers Project 7 - Junkers J12 - four seat passenger aeroplane project.
Junkers Project 8 - Junkers J14 - ten seat passenger commercial project.
Junkers Project 9 - Junkers R4 - three engine giant monoplane 1920 project.
Junkers Project 10 - Junkers JG1 - four engine project for a mid-wing monoplane, a 1920 Schulterdecker.
Junkers Project 11 - Junkers Junkerissime - large land and marine aircraft project with four engines for 60-64 passengers from 1921.
Junkers Project 12 - Junkers J1000 - the design named Riesenente (Giant Duck!), 1924 flying wing project.
Junkers Project 13 - Junkers Ju.X - transport seaplane project derived from the Junkerissime in 1928.
Junkers Project 14 - Junkers Ju.Y - 100 ton transport project.
 
Sources:
Hugo Junkers and his Aircraft (Gunter Schmitt) Transpress (GDR) 1988 ISBN 3344003038

Offline hesham

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #31 on: February 24, 2013, 07:34:54 am »
Excellent Cy-27,thank you.

Offline Wurger

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #32 on: February 24, 2013, 11:32:11 am »
Hi Cy-27,
 
can you please continue the transcription of Junkers aircraft projects as far as the book goes? Does it builds also on post-Hugo Junkers?
Cheers

Offline Cy-27

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #33 on: February 24, 2013, 11:44:14 pm »
The book covers Junkers designs up to the death of Hugo Junkers in February 1935. Subsequent aircraft designs by the firm are not covered.
 
I will post projects mentioned that are not covered elsewhere on the forum as and when I get free time.

Offline Wurger

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #34 on: February 25, 2013, 02:47:06 am »
Thanks.

Offline Cy-27

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #35 on: February 28, 2013, 01:25:11 am »
More on Junkers Project numbers ...
 
Junkers Project 7 - Junkers J12 - four seat passenger aeroplane project.
 
This was a Junkers project to develop th J10 into a four seat (1 pilot, 3 passengers) light passenger aircraft. Parts from the J10 were to be utilised but the actual fuselage was higher and wider. Design work was completed in January 1919. Work was halted when difficulties arose with mating the cabin to the fuselage. All data below is estimated.
 
Engine: Mercedes D IIIau (118 kW / 160 hp) engine
Wing Span: 12.25 m
Length: 8.25 m
Height: 3.00 m
Wing Area: 25.00 sq m
Maximum Speed: 170 km/h
Ceiling: 6,000 m
 
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Junkers Project 8 - Junkers J14 - ten seat passenger commercial project.
 
This strutted monoplane had a crew of two and eight passengers in four rows of two. The final plans for the machine were dated 10 July 1919 and showed a twin tail with two wing mounted engines.
 
Engine: 2 x  Daimler D IIIa (118 kW / 160 hp) or 2 x BMW IIIa (136 kW / 185 hp) engines
Wing Span: 24.30 m
Length: 12.9 m
Height: 3.50 m
Fuselage Width: 3.8 m
 
 
Source:

Hugo Junkers and his Aircraft (Gunter Schmitt) Transpress (GDR) 1988 ISBN 3344003038

Offline hesham

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #36 on: February 28, 2013, 04:54:40 am »
Very nice my dear Cy-27.

Offline Cy-27

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #37 on: February 28, 2013, 11:18:23 am »
More on the Junkers Project numbers

Junkers Project 9 - Junkers R4 - three engine giant monoplane 1920 project.
 
The draft plan for this design was 22 April 1920. Distinctive central teardrop shaped fuselage with a nose engine and two more embedded in the wings. Flight deck for two, with accomodation fo 24 passengers in six rows of four with a central aisle. All details below are estimated.
 
Engines: 3 x  Unknown engines
Wing Span: 38.0 m
Length: 24.0 m
Height: 5.50 m
Wing Area: 240 sq m
 
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Junkers Project 10 - Junkers JG1 - four engine project for a mid-wing monoplane, a 1920 Schulterdecker.
A trial construction started in 1920. Even with two of the four engine unavailable, it was believed that the JG1 could still fly at a height of 1,000 m at 110 km/h. Those parts finished by 1921 were destroyed due to the terms of the Treaty of Versailles restricting certain constuctions. Hovever, two sections of fuselage and one wing section (see image below) were hidden in the Junkers teaching exhibition, only to be destroyed in 1945.
 
Engines: 4 x  Unknown (191 kW / 260 hp) engines
Wing Span: 36.0 m
Wing Area:  sq m
Empty Weight: 9,000 kg
 
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Junkers Project 11 - Junkers Junkerissime - large land and marine aircraft project with four engines for 60-64 passengers from 1921.
 
see http://www.secretprojects.co.uk/forum/index.php/topic,5965.msg48584.html
 
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Junkers Project 12 - Junkers J1000 - the design named Riesenente (Giant Duck!)
 
A 1924 flying wing project / cavity wing canard design.
 
see http://www.secretprojects.co.uk/forum/index.php/topic,177.msg1006.html#msg1006
and
http://www.secretprojects.co.uk/forum/index.php/topic,6893.msg150772.html#msg150772
 
Sources:
Hugo Junkers and his Aircraft (Gunter Schmitt) Transpress (GDR) 1988 ISBN 3344003038
 
 

Offline Cy-27

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #38 on: February 28, 2013, 03:30:08 pm »
The last of the Junkers project number 1 to 14...

Junkers Project 13 - Junkers "Ju.X" - a transport seaplane project derived from the Junkerissime in 1928.
 
A future development of the Junkerissime flying boat design from 1921. No records exist for an official designation in the Junkers Dessau archive so Schmitt allocated "Ju.X" to this type.

Work on this large passenger flying boat started in 1928. Two fuselage hulls with a new box tail unit which joined the two hulls. It had raised pairs of airscrews above the wing in tandem. The cockpit was on the port hull only which gave the design an asymmetrical appearance head-on. No technical details.
 
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Junkers Project 14 - Junkers "Ju.Y" - 100 ton transport project.
 
As with the Ju.X, no company records exist for the designation of this project in the Junker Dessau archive so Schmitt allocated "Ju.Y" to this type. The outline design plan carried the reference "F.B.5243" and "Nurflugel-Flugzeug".

It was a 1930 design for a giant transport flying wing. It was to have ten diesel engines integrated into the thick middle wing area. It was to have an intermediate transmission and extension shaft to drive the ten pusher propellers located in the trailing wing.

There were possible two versions of this design, one with a tail and short rear fuselage and one without. It had a swept back outer wing. All details below estimates only.
 
Engines: 10 x Unknown Diesel (753kW / 1,000 hp)
Crew: 20
Passengers: 100
Maximum Take-off Weight: 100 tons
Freight Payload: 5 tons
 
Sources:
Hugo Junkers and his Aircraft (Gunter Schmitt) Transpress (GDR) 1988 ISBN 3344003038

Offline hesham

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #39 on: February 28, 2013, 03:50:34 pm »
Oh,that's fantastic,thank you my dear Cy-27.

Offline Retrofit

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #40 on: February 28, 2013, 10:08:35 pm »
Junkers Project 14 - Junkers "Ju.Y" - 100 ton transport project.
 
As with the Ju.X, no company records exist for the designation of this project in the Junker Dessau archive so Schmitt allocated "Ju.Y" to this type. The outline design plan carried the reference "F.B.5243" and "Nurflugel-Flugzeug".

It was a 1930 design for a giant transport flying wing. It was to have ten diesel engines integrated into the thick middle wing area. It was to have an intermediate transmission and extension shaft to drive the ten pusher propellers located in the trailing wing.

Thanks for all those information, Cy-27!
Here-under a drawing of the project Y from the book "Nurflügel" by R. Horten and P. Selinger (H. Weishaupt Verlag-1985).
 
« Last Edit: February 28, 2013, 10:10:18 pm by Retrofit »

Offline Cy-27

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #41 on: March 02, 2013, 03:35:05 am »
Junkers Junkerissime layout from the 1998 book Junkers Grossflugzeuge...
 
Source:
 Junkers Grossflugzeuge (H.J.Nowarra) Motorbuch Verlag (1998) ISBN 3613012243
« Last Edit: March 02, 2013, 03:40:25 am by Cy-27 »

Offline Cy-27

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #42 on: March 02, 2013, 03:39:38 am »
Junkers J.1000 model from the 1998 book Junkers Grossflugzeuge...

 
Source:
Junkers Grossflugzeuge (H.J.Nowarra) Motorbuch Verlag (1998) ISBN 3613012243

Offline hesham

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #43 on: March 02, 2013, 05:06:57 am »
Thank you my dear Cy-27,


do you have a drawing to J.28 two seat fighter project ?.

Offline Cy-27

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Re: Junkers Projects and Prototypes 1919 - 1939
« Reply #44 on: March 02, 2013, 06:02:41 am »
Hesham - No J28 I'm afraid, but I did find a JG.1 drawing on a disk drive secured back in 2003 ! Sorry, source unknown, looks like a scan from a book.