Praga Early Projects

Hi,
study of the three-seat unorthodox aircraft Praga B-45 from April 1933. Power was provided by two Praga engines (no further specification) with 2*75 hp. Wingspan: 12,0 m, Length: 9,0 m, Height: 2,6 m, Empty weight: 550 kg, Total weight: 965 kg, Maximum speed: 180 km/h

Source: Bittner Collection of the NTM Prague
Praga B-45.png
 
Hi,
study of the Praga BH-48 fighter aircraft from April 1933. The engine was to be a Praga CRK with 650 hp. Wingspan: 12,3 m, Length: 8,0 m, Maximum speed: 405 km/h. Other technical details have not been preserved...

Source: Aeronautical archive NTM Prague
Praga BH-48.png
 
Hi,
project of Praga E-47-I fighter trainer from May 1935. Power was provided by a 300 hp Praga ARK engine. Wingspan: 7,5 m, Length: 6,2 m, Maximum speed: 400 km/h. Other technical details have not been preserved...

Source: Aeronautical archive NTM Prague
Praga E-47-I.png
 
Hi,
project of Praga E-47-II training fighter aircraft from November 1937. Power was provided (as with the Praga E-47-I version) by a 300 hp Praga ARK engine. Span: 8.4 m, length: 7.0 m, maximum speed: 410 km/h. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga E-47-II_.png
 
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Hi,
Praga BH-40 bomber project from August 1930. Engines: 2* Praga "Asso" (Isotta-Fraschini Asso RV 800 hp engine license).
wingspan: 27 m, length: 16,7 m maximum speed: 210 km/h. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga BH-40.png
 
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Hi,
the study of the Praga B-50 aircraft from October 1933 became one of the types that became the basis for the later famous Beta Be-50 aircraft produced in Chocni (the designer Beneš left the company ČKD Praga at the end of 1933 and founded with the entrepreneur Mráz the company Beneš and Mráz, aircraft factory in Chocni).
Engine: Pobjoy 75 hp, wingspan: 11.5 m, length: 7,65 m, empty weight: 337 kg, total weight: 540 kg, maximum speed: 180 km/h.

Source: Aviation archive NTM Prague
Praga B-50.png
 
Hi,
the Praga E-46 sport aircraft project of April 1934 crystallized during 1935 into the Praga E-114 type.
Engine: Aeronca 36 hp, wingspan: 9.4 m, length: 6.6 m, empty weight: 250 kg, total weight: 410 kg, maximum speed: 130/h km
(from 1935 onwards, Praga sport aircraft types were designated from number 111, so the E-46 designation was relaxed and reused for the fighter project).
https://www.secretprojects.co.uk/threads/praga-early-projects.31893/post-579443

Source: Aviation archive NTM Prague
Praga E-46..png
 
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Hi,
variants of the reconnaissance aircraft with the type designation Praga E-51 had several forms, which differed mainly in the area of the fuselage nacelle. The first variants date from late 1936...
Engines: Avia Rk-17 2*360 hp or Walter Sagitta 2*550/600 hp, wingspan: 16.4 m, length: 11,4 m, empty weight: 3 100 kg, total weight: 4 120 kg, payload: 1 000 kg, maximum speed: 300 km/h, service ceiling 6 000 m

Source: Aviation archive NTM Prague, photo is from magazine L+K 25/1982
Praga E-51-I.png Praga E-51-I_.png Praga E-51-I.jpg
 
Hi,
...the Praga E-51 project continued in 1937. This variant dates from May of that year. This variant differs from the built E-51 prototype by the differently shaped fuselage nose and the assumed Armstrong defensive turret at the rear of the fuselage...
Praga E-51-II.png Praga E-51-II.jpg

...other variants of the Praga E-51 project from the turn of 1937/38 were already close in shape to the E-51 prototype, which was flown on 28 May 1938. The first variant was also to have an Armstrong gun turret in the rear fuselage, licensed from Tatra in Czechoslovakia. The second variant had a different fuselage nacelle glazing compared to the E-51 prototype...
The dimensions and performance of the three variants were identical.
Engines: Walter Sagitta I MR 2*550/600 hp, wingspan: 16.7 m, length: 11,6 m, empty weight: 3 100 kg, total weight: 4 120 kg, payload: 1 020 kg, maximum speed: 330 km/h, service ceiling 6 000 m

Source: Aviation archive NTM Prague. The first photo is from the publication Czechoslovak Prototypes Volume 2, Jakab publishing house, the others I took in NTM Prague.
Praga E-51-III.png Praga E-51_2.jpg Praga E-51_3.jpg Praga E-51-III_.png
 
Hi,
project of the Praga E-52 reconnaissance and observation aircraft from February 1937. Engines: Major 6 2*205 hp, wingspan: 11,0 m, length: 8,4 m. Other technical data were not preserved...
In 1951, Václav Němeček, then still a young aviation publicist, began publishing articles in the magazine Letectví entitled „Czechoslovak Aircraft". In these articles he wrote about the Praga E-52 type: „Praga's design department was also working on a lighter version of the observation aircraft, which was to have Walter "Major" engines and was to be a two-seater. A mock-up was built. The prototype was not built. The type designation was E-52".
I quote from his articles because several publications dealing with the history of Czechoslovak aviation state that the Praga E-52 was supposed to be a light fighter aircraft with Renault engines. The photos of the mock-up show that the nose of the aircraft was supposed to be glass, so it is obvious that Mr. Němeček is right about the original purpose of this aircraft...

Source: Aviation archive NTM Prague, photo is from magazine L+K 25/1982 Praga E-52.png Praga E-52.jpg Praga_6_01.png
 
Hi,
the February 1939 study of the Praga E-53-I conformed to the MNO (Ministry of National Defence) specification issued in 1936 for the Type IV (multi-place day/night light bomber). The first of two variants of this aircraft...
Engines: 2* Hispano Suiza-12Y-25 910 hp, wingspan: 17,5 m, length: 12,25 m. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga E-53-I.png
 
Hi,
the second variant of the Praga E-53 project dates from March 1939. Engines: 2* Hispano Suiza-12Y-25 910 hp, or R.R Peregrine 870 hp, wingspan: 17,5 m, length: 12,25 m. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga E-53-II.png
 
Noting Sarastro's comment regarding the second iteration of the E-53, that must be the first time that I have heard of a non-UK type which was to use RR Peregrines, unless anyone can think of any others.
 
Hi,
the Praga E-225 was a ten-seat aircraft project from November 1938. Engines: 2*Walter Saggita I-M 430 hp or 2*Praga FR 620 hp, wingspan: 16,2 m, length: 12,2 m. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga E-225.png
 
Hi,
the Praga E-250 project underwent an interesting evolution in 1937-39. This is the first version of the project from March 1937, when it was supposed to be a four-seat aircraft. Engines: 2*Praga DR 75 hp, wingspan: 12,8 m, length: 8,7 m. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga E-250-I.png
 
Hi,
the second variant of the Praga E-250 project from October 1937. This version was a six-seater and a variant with a nose gear was also developed. Engines: 2*Praga DR 80 hp, wingspan: 12,8 m, length: 8,7 m. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga E-250-II.png Praga E-250-II-I.png
 
Hi,
the fourth (last) variant of the Praga E-250 project from February 1939 was eight-seater. Engines: 2*Praga ZOD 250 hp, wingspan: 17,8 m, length: 11,0 m. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga E-250-III-III.png
 
Hi,
the Praga E-215 project of October 1937 was to be a four-seat variant of the Praga E-115 (one prototype was built).https://www.valka.cz/Praga-E-115-t8829
The fuselage was to be welded from Cr-Mo steel tubes, the rest of the structure was all-wood. Engines: Praga D 75 hp, wingspan: 11,0 m, length: 7,75 m, height: 2,65 m. Other technical data were not preserved...

Source: Aviation archive NTM Prague
Praga E-215.png
 

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