Raab-Katzenstein Designations

Apophenia

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Fritz Raab worked first with Dietrich (under Richard Dietrich, Raab was also test pilot) before forming Raab-Katzenstein with former Dietrich collegue Kurt Katzenstein.

Photo of 'Erka 25/32' aka the Raab-Katzenstein RK 25/32 is from Flugsport Nr.17, 17 August 1932.

Note: this topic previously included AEKKEA-Raab and Dietrich Designations. These have now been moved:

AEKKEA http://www.secretprojects.co.uk/forum/index.php/topic,12469.0.html

Dietrich-Gobiet/Dietrich Flugzeugwerke Designations
http://www.secretprojects.co.uk/forum/index.php/topic,12470.0.html
 

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Apophenia

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Re: AEKKEA, Raab-Katzenstein, and Dietrich designations

Raab-Katzenstein Flugzeugwerk GmbH (RaKa) Designations


Also see:

Dietrich-Gobiet/Dietrich Flugzeugwerke Designations

AEKKEA-Raab Designations
______________________________________________________

Raab-Katzenstein Glider [Raab-Katzenstein Glider - 1921?]

Raab-Katzenstein L.U.G.C. VI - [SIRIS]

Raab-Katzenstein RK 1 Schwalbe (Swallow), 2-seat cantilever biplane, 5-cyl radial
- 1926 prototype rebuilt from Dietrich DP XI
- Orig. designated Kl I or K I Schwalbe
- Pintsch Schwalbe II (Vienna)
- Rheinische FR-2 Schwalbe (improved Raab-Katzenstein RK 1)

Raab-Katzenstein RK 2 Pelikan (Pelican), 2-seat biplane trainer, 7-cyl radial (16 to China)
- aka RK II or K II, K IIa (eg D-0841), K IIb (eg D-0816), K IIc (eg D-0834)
-- NB: RaKa was the German Cirrus agent, hence the number of Hermes-engined RK 2s
-- http://www.flickr.com/photos/sdasmarchives/5956297186/ inline RK 2
-- http://www.flickr.com/photos/sdasmarchives/5956296998/ radial RK 2

Raab-Katzenstein RK 3 - (??)
Raab-Katzenstein RK 4 - (??)
Raab-Katzenstein RK 5 - (??)

Raab-Katzenstein RK 6 - 2-seat biplane trainer, Mercedes (?), eg D-1061, '70, D-1152, '56

Raab-Katzenstein RK 7 - Schmetterling (Butterfly), 1926 biplane glider/motor-glider
- RK 7: (Glider) Mixed wood/steel-tube constr., span 8.50 m
- RK 7: (Motor-Glider) 1 x 14 hp DKW 2-stroke,* span 8.00 m
-- * Possibly the 175 cc ARE 175 motorcycle 1-cylinder.?
-- See: Reply #16 https://www.secretprojects.co.uk/forum/index.php/topic,11929.msg337133.html#msg337133

Raab-Katzenstein RK 8 - Marabu, civil LVG C.VI conv.
- RK 8 : eg D-1114/W.Nr.40, D-1216/W.Nr.41, SIRIS
-- http://histaviation.com/rk_12_motte.html

Raab-Katzenstein RK 9 - Grasmücke (Meadow Warbler), 2-seat biplane trainer, 3-cyl Anzani
- planned as a 1928 'Volksflugzeug'
- RK 9a eg D-1446 (W.Nr.323), D-1525 (W.Nr.325), D-1575 (W.Nr.352), etc.
- Grasmücke also used as a single-seat aerial advertising aircraft

Raab-Katzenstein RK 10 - [Project] no details
- RK 10: 1 x Maybach engine

Raab-Katzenstein RK 11 - [Project] Single-engined biplane pax a/c
- RK 11 : [??]
- RK 11a: Pilot under wing open cockpit, encl. cabin for 4 passeners
-- See Rely #4 below

Raab-Katzenstein RK 12 - [Project] Motte (Moth)
- RK 12: Planned licensed DH.60 Cirrus Moth
-- 1 x ADC Cirrus, DLV consid. structure too weak
-- http://histaviation.com/rk_12_motte.html

Raab-Katzenstein RK 13 - [??]
Raab-Katzenstein RK 14 - [??]
Raab-Katzenstein RK 15 - [??]

Raab-Katzenstein RK 16 - [Project] advertising a/c
- RK 16: 2-seat, 4-engined* 3-bay biplane, span 20 m
-- Intended for illuminated advert signage at night
-- * 4 x 4 Benz Bz 4, BMW IV , or Junkers L5 inlines
-- http://histaviation.com/rk_16.html

Raab-Katzenstein RK 17 - [Project] 1 + 4/5 airliner
- RK 17: 1 x Junkers L5 water-cooled 6-cyl inline

Raab-Katzenstein RK 18 - (??)
Raab-Katzenstein RK 19 - (??)
Raab-Katzenstein RK 20 - (??)
Raab-Katzenstein RK 21 - (??)

Raab-Katzenstein RK 22 - Opel-Raab-Katzenstein (RK 9 with solid-propellant Sander rocket)
- an 'Ente' canard design (RK number unknown) was also proposed but Rabb and Opel fell out.

Raab-Katzenstein RK 23 - (??)
Raab-Katzenstein RK 24 - (??)

Raab-Katzenstein RK 25 - aka 'Erka', Argus As8
- RK 25 'Ruhrland' racing aircraft, aka Raka 25
- RK 25/32, 2-seat, low-wing monoplane racer/tourer, presum. same as RK 32
- NB: Anatole Gobiet acquired rights and sold them to Sweden

Raab-Katzenstein RK 26 - Tigerschwalbe (Tiger Swallow[tail]), 2-seat biplane trainer
- Raab-Katzenstein F 1 Tigerschwalbe
- Raab-Katzenstein RK 26a
- ASJA Sk.10 Tigerschwalbe, rights acquired from Anatole Gobiet
- Pintsch TigerSchwalbe
- Fieseler Fi-1, D-1616/D-EVUK (W.Nr.103)

Raab-Katzenstein RK 27 - 1928 40m Parseval blimp, D-RK27, 2 x 35 hp/26 kW Anzani

Raab-Katzenstein RK 28 - - [Project] 2- seat trainer
- RK 28: 1 x Bristol Jupiter, no other details
-- 'RK 28' also often seen as a typo for RK 26

Raab-Katzenstein RK 29 - 1930 touring biplane, Sh 14, D-1898 (W.Nr.112), D-1899 (W.Nr.113)

Raab-Katzenstein RK 30 - [??]
Raab-Katzenstein RK 31 - [??]

Raab-Katzenstein RK 32 - [SIRIS], 1932, 120hp Argus-powered, related to RK 25 (?)
- NB: RK 25 D-1489 (W.Nr.85) is also listed as a "RK 25/32" or "Raab-Katzenstein 25-32"

At some point Raab Katzenstein (Raka/Kassel) also built a Bleriot XI replica (W.Nr.967).

Also, does anyone know anything about DH Moths being licenced by RaKa?
http://www.flightglobal.com/pdfarchive/view/1927/1927 - 0735.html
 
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Retrofit

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Re: AEKKEA, Raab-Katzenstein, and Dietrich designations

Apophenia said:
Photo of 'Erka 25/32' aka the Raab-Katzenstein RK 25/32 is from Flugsport Nr.17, 17 August 1932.

Nice aircraft!
Any 3V drawing available?
Thanks in advance!

PS: Just find this side view of the open cockpit RK-25 version on:
http://cnum.cnam.fr/CGI/fpage.cgi?4KY28.116/327/100/588/0/0
 

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Apophenia

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Raab-Katzenstein 3-views

Thanks Retrofit. The RK-25 looks quite different without its canopies!

Here's a few 3-view drawings
 

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Jemiba

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As an addition: Rk 11a : Project for a civil single engined aircraft for 4 passengers.
Drawing from
Wolfgang Wagner "Der deutsche Luftverkehr - Die Pionierjahre 1919 - 1925",
but no other data given.

 

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Apophenia

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Excellent find Jens! Size aside, you can still see a Pelikan relationship.
 

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Apophenia

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Thanks for the correction Jens. I'm not sure where I got the 'parasol' idea from :eek:

http://commons.wikimedia.org/wiki/File:ErsterFlugzeugSchlepp1927-03-15.jpg
 

memaerobilia

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Jemiba;
Is the magazine article about the restoration of the RK-7?
It was returned to Berlin, by and for the Deutsches Technikmuseum, in recent years.
 

Jemiba

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memaerobilia said:
.. Is the magazine article about the restoration of the RK-7?

No, the article is generally about the history of this company, which is quite unknown even here.
But thaks for the clue, will have a closer look during my next visit there.
 

memaerobilia

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Thank you, Jemiba;
I am not certain if the RK-7 IS restored, yet? I thought, perhaps, the German article was written because there was news of its restoration. In 2007, I arranged for the RK-7 to go back to Germany, to the Deutsches Technikmuseum, who intended to restore it. They had been trying to acquire it for some 25 years..At the time of the initial agreement, only the fuselage and tail sections were known, Later the same source located the wings and the landing gear, as well. So it MAY possibly still be in storage, awaiting its restoration schedule, in Berlin.
 

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Crimso

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On this page
http://www.flightglobal.com/pdfarchive/view/1929/1929-1%20-%200703.html
there is strange "high-speed" Raab-Katzenstein (2nd photo)
There is not much info in the text, except that it had Cirrus "Hermes" engine and this little info:
"The latter is a particularly clean machine and has a top speed of round about 130 m.p.h., but the landing speed is also high and would appear to be rather unsuitable for the bad ground over which the tour passes, should the necessity for a forced landing occur. It is being flown by "John Carberry.""
 

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richard

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The second picture shows the Darmstadt D.18 , and the third , a RaKa 25 .
 

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Oh, yes, it's misplaced captions, thank you! Two pages early there is both airplanes on one photo, I was misguided who is who.
 

hesham

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Hi,

RK-8 was itself LVG C.VI civil version
RK-10 was airplane Project with one Maybach engine
RK-12 Motte was a two-seat trainer biplane,a licence built DH Tiger Moth
RK-16 was a two-seat four engined airplane Project for advertising
RK-17 was a 4/5 passenger light transport Project,powered by one Junkers L5 engine
RK-28 was a two-seat trainer Project,powered by one Bristol Jupiter engine

http://histaviation.com/raab_katzenstein.html
 

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Apophenia

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Thanks Hesham. Those have now been added to the list.
 

hesham

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Re: AEKKEA, Raab-Katzenstein, and Dietrich designations

Apophenia said:
Raab-Katzenstein RK 7 - Schmetterling (Butterfly), 1927 biplane glider

From Le Documant Aeronautique Marh 1926,small correction.
 

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Apophenia

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Thanks hesham. So, not a glider but an ultra lightweight aircraft.
 

hesham

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Apophenia said:
Thanks hesham. So, not a glider but an ultra lightweight aircraft.

At your service my dear Apophenia,
 

Apophenia

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I guess "Gleiter und Motorsegler" says it all! Obviously the Schmetterling was built as both a glider and a short-span motor-glider. A pity that the German Aviation 1919 - 1945 site doesn't specify which of the four RZ 7s were gliders or motor-gliders :confused:
 

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