Some Czech Avia Post WWII Projects

[hesham]

Hi,

here is some Avia Post WWII Aircraft Project;

-Av.40 was a tandem two seat fighter trainer low-wing monoplane Project,powered by one Avia HS 12Y
engine

-Av.42 was a cantilever low-wing single seat fighter monoplane Project,to replace S-199

-Av.50 was a low-wing medium transport aircraft Project of 1949,powered by two AS-82FNV engines

-Av.48 was a twin-boom high-wing utility and military observation aircraft Project

-Av.41 was a twin boom high wing light transport aircraft,powered by two tractor engines,Project only

 

[Apophenia]

Good stuff Hesham ... and very interesting designs.

The Av-40 is obviously a B-135 derivative. And, I presume, the Av-50 was a local rival to what became the licensed Av-14. BTW, if you don't have access to the háček diacritical for the AŠ-82 engine, probably better to use the original ASh-82 (or just Avia M-82).

OT: Does anyone know Avia's internal 'C' designation for the S-92/CS-92 Turbina jets?

 

[hesham]

Thank you my dear Apophenia,

but I think not for Av.50 which appeared in 1949,but Av.14 designation was
given in 1954.

Here is the Av.38,it was a twin boom high-wing light transport project,powered by two engines driven two pusher propellers,Project only.

 

[bigvlada]

The picture #4 is AV-48, not AV-50, according to text.
(corrected, thank you !)

 

[hesham]

Hi,

http://archive.aviationweek.com/search?exactphrase=true&QueryTerm=twin-boom&start=80&rows=20&DocType=Image&Sort=&SortOrder=&startdate=1916-08-01&enddate=2018-09-03&LastViewIssueKey=&LastViewPage=

 

[Sarastro]

Hi.
Avia LE-PE.3.3 from 1948-49 with BMW 003 engine.
From: L-39 Albatros, Pavel Kučera, Jakab publishing

 

[Sarastro]

Hi,
a few more details on the post added by Hesham. Avia Av-38A, two Walter Minor 6-III engines, wingspan 11,0 m, overall lenght 9,05 m, height 2.65 m, wing area 20 m^2, empty weight 1 150 kg, take off weight 1 900 kg, maximum speed 310 km/h. cruising speed 265 km/h, ceiling 3 200 m, range 1 100 km.
From: L+K

 

[Sarastro]

Hi,
project of a light single-seat observation aircraft Avia Av-47 from the late 40s. One of the projects of the competition, which was won by Aero with type Ae-50. Walter Minor 4-III engine.
From: L+K

 

[Sarastro]

Hi,
project of a light two-seater observation aircraft Avia Av-49 from the end of the 1940s, which better matched the assignment of the competition, which was eventually won by Aero with type Ae-50. Walter Minor 4-III engine.
From: L+K

 

[Sarastro]

Hi,
project of a light three-seater observation aircraft Avia Av-48 from the late 40s. One of the projects of the competition, which was eventually won by Praga with the E-55 type. Walter Minor 6-III engine.
From: L+K

 

[Zizi6785]

Hi.
Avia LE-PE.3.3 from 1948-49 with BMW 003 engine.
From: L-39 Albatros, Pavel Kučera, Jakab publishingView attachment 647217

Are there more views?

 

[Sarastro]

Hi,
the book Aero L-39...only contains this side view.

 

[Zizi6785]

Hi.
Avia LE-PE.3.3 from 1948-49 with BMW 003 engine.
From: L-39 Albatros, Pavel Kučera, Jakab publishingView attachment 647217

In book of Československé stíhací letouny they called this plane LA-P9:

 

[Sarastro]

Hi,
even in the book of Czechoslovak aircraft 1945-1984 by Vaclav Nemecek, this study is listed as Letov LA-P9. I can't determine which designation is correct, maybe I'll find out the truth in the archives of the National Museum in Prague ...

 

[Zizi6785]

Hi,
even in the book of Czechoslovak aircraft 1945-1984 by Vaclav Nemecek, this study is listed as Avie LA-P9. I can't determine which designation is correct, maybe I'll find out the truth in the archives of the National Museum in Prague ...

Is there three-view in the Nemecek book?

 

[hesham]

Is there three-view in the Nemecek book?

No three view in the book.

 

[Zizi6785]

Is there three-view in the Nemecek book?

No three view in the book.

Thanks, but this is LE-P3.4
Any pictures from this series? LE-P3.1, LE-P3.2, LE-P3.3,

 

[Zizi6785]

LE-P3.1, LE-P3.2, LE-P3.3 and LE-P3.4 from Československé Stíhací Letouny book.

 

[Sarastro]

Hi,
Hesham meant this picture...

Other projects you ask (and not only those) are listed in Bittner's collection, which is stored in the archives of the National Technical Museum. This collection contains approx. 1,600 volumes, so it will probably be difficult to get any details from it. Maybe I'll be lucky ...

 

[hesham]

From, Nemecek book,

the LE-P4.

 

[Sarastro]

Hi,
The Avia LE-P3 trainer project from 1949, one of four variants of this type. The original documentation for this version states, " The completely unusual design of the aircraft serves to make the most of this aerodynamic concept: (a) perfect air supply to the engine (no losses in the engine intake manifold), (b) easy access to all parts of the engine, (c) a possible engine fire does not affect the crew or the fuel tanks, (d) the possibility of quick replacement of the same type of engine, but also the possibility of easy installation of a more powerful engine, (e) psychologically, the pilot-student learns in his own cabin to act independently in flight. ..".
The aircraft was of all-metal construction, the engine was of the BMW 003 type, the armament consisted of a machine gun with 300 rounds and a camera gun.
Dimensions: wingspan 9.3 m, length 9.04 m, empty weight 1 780 kg, in-flight weight 2 770 kg, maximum speed 800-850 km/h.

Source: the Bittner Collection, National Technical Museum (NTM) Prague

 

[The Wooksta!]

Are there any 3 views of the Av.42 fighter project?

 

[Sarastro]

Are there any 3 views of the Av.42 fighter project?

Hi,
there is no drawing of the Avia Av.42 in the Bitner collection or in the archives of the National Technical Museum (NTM) in Prague. In the NTM archive there is a drawing of the Avia Av.43 fighter aircraft project from 1946. This study is also the subject of my research, hopefully I will be able to get a copy of the drawing this year.