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Gloster Gambet and Nakajima A1N 1 and A1N 2

Hai

I have a problem with the dimensions of the Nakajima versions, who can help me, maybe from  Japanese sources?

Dimensions Gambet

Span         31′    10″
Length     21′     4″
Heigth        11′      8″

In several publications there is mentioned about the two Nakajima versions the following dimensions:

Span          31′    10″
Length      21′     4″
Heigth       11′    10″

I found the information that the Gambet was adapted by the Japanese for NAVY and the second version was modified.
How was is adapted and what where the modifications?
Did the Japanese industry use foot and inches or the metric system during the pre war period?

In Mikesh and Abe’s book Japanese Aircraft they mentioned the following dimensions.

                  A1N 1                      A1N 2

Span         31′     9″                  31′    10″
Length     21′     3  1/2″           21′      3  3/4″
Heigth     10′     8″                  10′    10″

 

Who can help me, what were the dimensions used by Nakajima for these aeroplanes?

What were the adaptions for the NAVY and the modifications for the second version? 
Is there any material which shows the construction of these the types?

Thanks

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By: Jan den Das - 8th February 2022 at 08:39

hai

I found on Hakans biplane site also something

he mentioned the A1N 1    9,70      and the      A1N 2       9,68  span

this sound better, could it be that after modification (metric???) the span of the A1N 2 was something shorter??

 

who knows more ???????

 

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By: Jan den Das - 8th February 2022 at 07:10

Thanks, I shall study potographs for de differences.

 

BUT wat about the span of the top wing 1¨ by the first version shorter than the second version.

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By: Arabella-Cox - 7th February 2022 at 17:21

A quick glance at side view of the A1N 2 shows that the fin and rudder differ from the other models.

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By: Jan den Das - 7th February 2022 at 16:48

Thanks, but this informtion I already found.

The source I mentioned was not complete.
it came from the Putnam book, Japanese Aircraft 1910-1941 by Mikesh and Abe, 1990.

But strange that they mention that the A1N1 had a 1″ shorter wing than the Gambet but the A1N2 received a wing with the same span 31’10”.
That the A1N2 a height had from 11’10” was, maybe, necessary for the engine with more hp??

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By: Mothminor - 7th February 2022 at 15:05

“Gloster Aircraft since 1917″ states all the dimensions are the same except for the height. Span 31ft 10″; Length 21ft 3 and 1/2″ and height 10ft 8″ for the Gambet and A1N1 but 10ft 10” for the A1N2.

The book doesn’t go into great detail on the differences between the types simply saying the design was modified to suit Japanese production techniques. The powerplant and propeller differed – the Gambet having a 420hp Bristol Jupiter VI with a 9ft diameter Watts wooden prop; the A1N1 a 520hp Nakajima Jupiter Vi driving a 9ft 2″ diameter wooden prop and the A1N2 had a 520hp Nakajima Kotobuki 2 and a metal propeller.

The weight of each type varied – the Gambet being 2,010lb; the A1N1 was 2,094lb and the A1N2 = 1,944lb. These are the empty weights.

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By: NewQldSpitty - 7th February 2022 at 10:04

Japan used metric off memory.

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