Prewar Projects by Karlis Irbitis

[Maveric]

Hi all,

I have some projects by the good known latvian designer Karlis Irbitis. Let´s start in the chronolgical order...

...the I.1 to I.9 are build aircraft. The first projects was I.10 "Kaija II".

 

[Maveric]

...the I.11 to I.17 also real aircraft (I.13 not assigned).

Next project I.18.

 

[Maveric]

...there is the I.19 project (fighter).

 

[XP67_Moonbat]

Wouldn't this be a "Prewar Project"? Just wondering.

 

[overscan (PaulMM)]

Split topic appropriately.

 

[Justo Miranda]

I-19 additional info...

 

[hesham]

Hi,


here is from Air Pictorial August 1957.

 

[Chunks]

His book "Of Struggle and Flight: The History of Latvian Aviation" is a great source for this and more. Thanks very much for this topic, I'd forgotten this subject (all too often nowadays) and appreciate the jump start!!

 

[hesham]

Thank you Chunks for your advice.

 

[hesham]

Hi all,

I have some projects by the good known latvian designer Karlis Irbitis. Let´s start in the chronolgical order...

...the I.1 to I.9 are build aircraft. The first projects was I.10 "Kaija II".

From Le Fana 283.

 

[Apophenia]

Thanks hesham. Latvian Aviation mentions that, in 1942, Herberts Runka was building a "two-seater, high wing monoplane with an enclosed cabin" in a workshop near the Riga Cathedral. That "high wing" could easily be interpreted as your "monoplan parasol"

 

[hesham]

Thanks hesham. Latvian Aviation mentions that, in 1942, Herberts Runka was building a "two-seater, high wing monoplane with an enclosed cabin" in a workshop near the Riga Cathedral. That "high wing" could easily be interpreted as your "monoplan parasol"

Thank you my dear Apophenia,and we can add it to the Irbitis list.

 

[Apophenia]

Thanks hesham. I'm not sure how we would designate Runka's cabin parasol. Irbitis' I-10 is more than a little confusing.

In the opening post of this thread, Maveric illustrated an unbuilt open 2-seat parasol - the I.10 Kaija II (Gull II). Your 2017 Wikipedia link in the designation section lists a I-10 Vanags (Hawk) built by Valsts Daugavpils Arodskola in 1935 (that date sounding about right).

Perhaps Valsts Daugavpils Arodskola intended to construct an I-10 Vanags for Latvijas Aeroklubs in 1935 but never got around to it - Maveric's unbuilt open parasol. Then, Herberts Runka began construction of an I-10 in 1942 - which he may (or may not) have completed in 1944.

 

[hesham]

Maybe your are right my dear Apophenia,but need to check.

 

[rlucas]

Did anyone ever see three views or drawings of the I-1 to I-9 types?

 

[Justo Miranda]

I-5

 

[Justo Miranda]

I-6 and I-7

 

[redstar72]

I-6 and I-7

They look the same. What's the difference?

 

[Justo Miranda]

:-\

 

[Orionblamblam]

I-6 and I-7

They look the same. What's the difference?

The color. That's important.

 

[rlucas]

Thank you Justo! The color profiles I know already, the I-5 info is new to me I think three views of the I6 and I-7 will be hard to find... I am looking for several years already... no luck yet...

 

[Justo Miranda]

 

[hesham]

From, Latvijas Aviacija un tas Pionieri.

 

[hesham]

And,

 

[rlucas]

Many thanks for posting these Hesham! Nice to see 3 views of the I-6 and I-7!

 

[hesham]

As I know,there was a glider designed by him,can anyone remained me ?.

 

[Apophenia]

As I know,there was a glider designed by him,can anyone remained me ?.

Are sure about that? Other than '13', the entire Kārlis Irbītis' designation series is known - I-1 through I-19.

While Irbītis was at VEF, the one-off VEF-1 glider was produced. That glider was basically just a rewinged Grüne Post (but I have no idea who designed that wing or the conversion).

 

[hesham]

My dear Apophenia,

I am not sure of course,but I found a mystery in my files,called MI-02,I thought it was a glider,and really I don't know what was it ?.

 

[Apophenia]

I am not sure of course,but I found a mystery in my files,called MI-02,I thought it was a glider,and really I don't know what was it ?.

Ah, that one I do know. The MI-02 was the engine proposed for Irbītis' I-19 fighter project. The MI-02 was to be a 1,470 hp air-cooled engine with an inverted-Y layout using three rows of de Havilland Gipsy Six banks.

 

[hesham]

From Aero Journal 80.