Ambrosini (Sergio Steffanuti) Pre-War Projects and Prototypes

Maveric

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Hi all,

we all know Sergio Steffanutti for his aircraft S.S.3 and S.S.4, but there must be also a S.S.1 and S.S.2. Do you have some informations about this aircraft/projects? Who knows a short biography of Sergio Steffanutti? ???

Servus Maveric
 

hesham

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Hi Maveric,

for SS.1 and SS.2 ,a small info about them on;
http://en.wikipedia.org/wiki/Ambrosini_SS.4
 

Apophenia

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Maveric,

Attached is an SS.2 model by Giampaolo Sellitto (and fully deserving the name "Anitra"!).
original: http://www.cmtonline.it/XV_Mostra_Images/0333.JPG

For SS.2 drawing and colour profile, see: Aerofan No.45 1989/5-6 "First Canard of Stefanutti" .

You might also try No.36 1987/4 "The Ambrosini-Stefanutti Family of Aircraft", and
No.51/52 1991/1 "The Second Stefanutti Canard".

Not sure about the SS.1
 

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Sundog

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With all of the talk on the XP-55, I was wondering if anyone had more information on the Ambrossini (SAI) S.S.4? I always thought it was a really nice looking canard fighter.

Also, when I say more info, I mean with regards to any possible existing detail drawings and the like. There is enough info on the net about it's very short lived history. ;)
 

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Three view of said aircraft.

Regards Bailey
 

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Justo Miranda

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Additional info
 

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AeroFranz

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A few more details from volume 2 of "Dimensione cielo"

Armament was supposed to be 2x20mm and 1x30mm cannons
fuel tanks between pilot and engine and in inner wing panels

The SS.2 motorglider testbeds (there were 2, built at Guidonia in 1935) were powered by a 16CV Keller two cylinder engine.
In 1937, one of the airframes was modified with the addition of a second seat (becoming the SS.3) and a 38 CV C.N.A. engine (initially rated at 26CV). The SS.3 was flown extensively and made cross-country flight between Rome and Milan.
The SS.4 crashed on March 8, 1939. The loss of the aileron was due to vibrations transmitted from the engine, which was bolted directly on the airframe, as well as to defective installation of the said part.
 

redstar72

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Drawing from L+K 17/1995, by Martin Salajka:
 

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Maveric

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I have pics from the S.S.2 and S.S.3, but without other informations. Can anybody tell us more about other Steffanutti aircraft? Was the S.S.4 the last S.S.-design? What´s about the S.S.1...
 

Justo Miranda

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S.S.2 and S.S.3 info here...sorry no drawings :-\
 

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Justo Miranda

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S.7 "Freccia"
 

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Justo Miranda

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S.A.I. 107 (Fighter)
 

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Justo Miranda

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S.A.I. 107 (Racer)
 

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Justo Miranda

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S.A.I.207
 

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Justo Miranda

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S.A.I.403
 

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Stargazer2006

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Thanks Justo, I know so little about Italian aircraft, and some of these are just fantastic designs!!!
 

AeroFranz

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This is AWESOME material, and once again, Thanks Justo. However I suggest we rename the thread to include all Stefanutti's projects :)
 

hesham

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Justo Miranda said:
S.A.I.404


But we know that,


SAI-404 was a bomber ?,and this aircraft may be,SAI-503 improved version
of SAI-403.
 

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redstar72

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A bit more on SAI-207:
 

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robunos

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Wow! That looks like something outta DUCK TALES!


Moonbat, plz........................................................... ;) ::) ;D


cheers,
Robin.
 

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Jemiba

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Folks, thanks for your contributions, but please, it would be quite good, to stay with
the
original question and if straying OT, at least to stay with the appropriate section .
I think, I'll clean up a little bit merge this and maybe some other topics to a general
"Ambrosini pre-war types and projets" thread and move the Vindex to the existing thread
in
the post-war section.
 

Grey Havoc

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hesham said:
Justo Miranda said:
S.A.I.404


But we know that,


SAI-404 was a bomber ?,and this aircraft may be,SAI-503 improved version
of SAI-403.

Was the SAI-404 meant to be for the Maritime Reconnaissance & Torpedo Bomber roles, perhaps?
(You can answer this once the thread carve up has taken place.)
 

hesham

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Also Ambrosini projects;

Ambrosini SAI.8 :reconnaissance flying boat.
,, SAI.9 :reconnaissance bomber.
 

Apophenia

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hesham said:
But we know that, SAI-404 was a bomber ?,and this aircraft may be,SAI-503 improved version
of SAI-403.

This stuff does get confusing. Skybolt said elsewhere that "The [SAI] 504 was an evolution of the 404a, which was an evolution ot the 404."
http://www.secretprojects.co.uk/forum/index.php/topic,7835.msg68757.html#msg68757

We can probably assume that by late 1942, SAI Ambrosini felt safe in 'recycling' the 404 designation from a failed 1938 proposal. So, the second SAI.404 concept was an enlarged variantion on the Dardo theme (with Bf 109 influence) powered by an Isotta-Fraschini Zeta.

But what was the SAI.404a? Further confusion springs from planned construction methods. Is it true that the Zeta-powered SAI.504 was to be of wooden construction? Does the Bf 109 influence mean that the SAI.404 to have been of all-metal construction? Or are all of those construction material notes confusing matters with the SAI.503, a Zeta-powered, wooden outgrowth of the SAI.403? :eek:
 

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...coming back to the SS.1 problem, none really knows what it was. Someone think that the SS.1 (for Sergio Stefanutti 1) was the subject of the degree thesis of the young engineer; according to others, the SS.1 was a scale flying model of the SS.2.
Nico
 

hesham

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hesham said:
Also Ambrosini projects;

Ambrosini SAI.8 :reconnaissance flying boat.
,, SAI.9 :reconnaissance bomber.


Amrosini SAI.9 was a twin engined overland observation aircraft project.


http://www.aeronautica.difesa.it/storiaTradizione/ufficioStorico/Documents/documenti/Direzione%20Costruzioni%20Aeronautiche.pdf
 

hesham

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Hi,


the SS.2 and the SS.3.
 

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