Military Review

Stipa-Caproni: one of the most unusual aircraft

Stipa-Caproni is an experimental Italian aircraft designed by Luigi Stipa in 1932, built by Caproni and built by Caproni. Wood was used as the basic material for the construction. Stipa-Caproni had an 19 foot length in 4 inches (5,88 meters), but this aircraft differed from the others in both size and shape.

Stipa-Caproni: one of the most unusual aircraft

The fuselage was barrel-shaped. Both screws and the engine (De Havilland Gipsy III 120bhp) was housed inside the fuselage. The main principle of Stip's idea was to install a propeller and an engine inside the fuselage. Thus, the screw was used as a fan located in the annular fairing. Luigi Stipa called this trend in aircraft design an “intubated propeller”. For that time, it was one of the most radical ways to improve the efficiency of aircraft engines. Although Stipa-Caproni was built in a single copy (the Italian air force was not interested in further development, the machine was built as a demonstration of the capabilities of the Italian aircraft designers and industry), the revolutionary ideas of the Steps were later used in the development of aircraft engines and studied by many scientists.

Technical characteristics of the experimental aircraft Stipa-Caproni:
Crew - 1, 2 person;
Length - 5, 88 m;
Height - 3 m;
Maximum take-off weight - 800 kg;
Wingspan - 14,28 m;
Engine - piston de Havilland Gipsy III horsepower 120 hp (90 kW);
Maximum speed - 131 km / h;
Landing speed - 68 km / h.
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  1. patline
    patline 11 July 2013 09: 53
    The idea is even nothing. Make the pipe narrower, put a modern engine, reduce the wings (use them rather as horizontal stabilizers), because the pipe can also create lift. Steering wheels, both vertical and horizontal, should be located behind the pipe. And to make the end of the pipe with a rejected vector. And it is not necessary to make the pipe round.
    So generally it is possible to invent a revolutionary design. But this is the business of designers with calculations, calculations and other arithmetic inaccessible to ordinary citizens smile
    1. Argon
      Argon 11 July 2013 13: 19
      The Italians rushed with this idea until Italy left World War II, even built a couple of fighters in a similar scheme, but did not go into production mainly due to the unacceptably high weight of the airframe, relative to the weight of the machine as a whole. If I am not mistaken on the basis of this scheme ( 2-43g) tried to make an interceptor with a VRDK and with the same result. Modern calculations show that the principle of "Water cannon" optimizes in some way the operation of the propeller in the speed range from 44M to the aerodynamic thrust limit (propeller), at some cost (rev profile) but the material of the airframe is titanium or composites.
      1. Civil
        Civil 13 July 2013 10: 26
        The Austrian artist also praised Italian technology, but always emphasized that the soldiers were Italian bullshit ...
  2. pensioner
    pensioner 11 July 2013 11: 09
    Interesting! Crew - 1,2 person;pilot and ears of the navigator, or what? what
    1. Aryan
      Aryan 11 July 2013 14: 27
      and screwed the holes to the hole .. what
      1. avdkrd
        avdkrd 12 July 2013 00: 54
        well yes - a hollow with a propeller smile but the idea is that it’s even nothing and the take-off and landing characteristics are impressive. Belarus seems to have implemented this idea at a modern level, though I have not heard that the project would go into series.
  3. il grand casino
    il grand casino 11 July 2013 11: 32
    Thank you for the article! The idea is interesting. Although at first glance it’s funny))) I recall old cartoons with cartoon airplanes
    1. AK-47
      AK-47 11 July 2013 12: 39
      Quote: il grand casino
      The idea is interesting.

      Nothing interesting if the fuselage was used as a wing then yes, and so nonsense.
      1. cdrt
        cdrt 12 July 2013 00: 38
        Come on you quibble. 1932 year. All over the world, all biplanes were built of wood and canvas, as in WWI, and this is even a monster, but unusual wink
  4. Max otto
    Max otto 11 July 2013 11: 50
    So one of the first jet planes were like that! The same layout.
    1. il grand casino
      il grand casino 11 July 2013 14: 15
      The lineup is yes ... but here the "wild" proportions are much more interesting))
  5. Uhe
    Uhe 11 July 2013 16: 19
    It turns out that the Italians are even more perverts than the German prodigy lovers :)))
  6. ramsi
    ramsi 11 July 2013 21: 35
    yes FIG knows ... here the first thing that a layman sees is two flow surfaces: inside the pipe and outside the airframe. (The air intake for the motor, too, is not canceled.) In my opinion, it should
  7. alex86
    alex86 12 July 2013 20: 35
    The airplane is very cute, one can feel the anticipation of the jet era. It is clear that he had no prospects, but given the year and the level of development of that time, they were unambiguous fellows, boldly, albeit naively (from the perspective of today). But without such trial balls, the development of technology will not do ...
  8. Assistant
    Assistant 15 July 2013 15: 27
    Now the OKB them. Kuznetsova, together with NPP Aerosila, proposed the NK-93 turbojet engine with an ultra-high bypass ratio and a coaxial coaxial twin-screw SV-92 propfan. They wrote that the use of a coiled (in a ring) twin-screw propfan, all other things being equal, provides fuel savings of up to 15% compared to the used turbojet counterparts.
    True, the NK-93 project was covered.
    That is, everyone returns to the idea of ​​Stipa-Caproni.
  9. samolet il-76
    samolet il-76 12 December 2013 17: 54
    To be honest, the airplane is funny lol