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Author Topic: Quest: Guess what is depicted here  (Read 998542 times)

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locopiston

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Re: Quest: Guess what is depicted here
« Reply #3204 on: April 09, 2018, 11:44:40 AM »

Raise your hand those who think that it is not a plane! ;D

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LameHawk

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Re: Quest: Guess what is depicted here
« Reply #3205 on: April 09, 2018, 03:12:14 PM »

Flying boat



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SAS~CirX

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Re: Quest: Guess what is depicted here
« Reply #3206 on: April 10, 2018, 02:03:51 AM »

Quote
During the First World War, engineer Giuseppe Somalvico developed a plane with a rotating wing, patented it on September 8, 1917. Immediately after the war, this respected graduate from Como, who had a technical studio at Volta Street, 50, tried his hand at building a curious seaplane, whose concept was based on the patents mentioned above and was completely new. Without any public or private financial support, Somalvico, driven by great passion, took on the enormous costs necessary to meet the possibility of building a prototype, giving it all his property and all the means of his family. he christened his car, calling it the Somalvico So.1 "David".

It was a seaplane biplane, which even at first glance was extremely strange: the wings were made of two round surfaces placed above and below the fuselage. These surfaces were circles with central holes suspended from a cardanic suspension, rotating in opposite directions with a variable frequency. The innovation in the form of a rotational motion of the wings was supposed to perform the function of dynamic equilibrium.

The wings were connected to each other by a vertical shaft of two parts rotating in opposite directions by means of two bevel gears. Thanks to the sphero-cardanic suspension, it was possible to fix the change in the angle of attack from 0 ° to 9 °. According to Somalviko, the change in the frequency of the leading edge of the circular wing made the elevator wheels unnecessary, leaving only the tail fin stabilizer. The wings, instead of being fixed to the rest of the aircraft, were located on ball bearings and the rest of the fuselage could move around the central shaft. According to the intentions of the inventor, this system was supposed to perform automatic stabilization of the aircraft in flight due to simultaneous action of centripetal and centrifugal forces. In addition, according to him, in case of loss of the balance of the machine, it will be enough to return the aircraft in the flight line by rotating the fuselage around the central axis. In practice, by this decision, Somalvik thought to solve the problems of transverse and longitudinal automatic equilibrium. The momentary stability of the aircraft and the change in the angle of attack of the whole system of wings were to advantageously replace the ailerons on the corners, while retaining the horizontal planes. Wings were fastened with metal rods made of welded steel pipes, with a double linen coating and painted in several layers of enamel. The fuselage and tail unit were made with the same materials. In the cockpit, which did not differ from conventional aircraft, the pilot could change the trim with a flywheel that simultaneously controlled the elevator and the position of the ring stabilizer, which served to support the wings during the rotation. The steering wheels were controlled by a pedal. Tail empennage two-kilo, ovoid in shape.
 
During the First World War, engineer Giuseppe Somalvico developed a plane with a rotating wing, patented it on September 8, 1917. Immediately after the war, this respected graduate from Como, who had a technical studio at Volta Street, 50, tried his hand at building a curious seaplane, whose concept was based on the patents mentioned above and was completely new. Without any public or private financial support, Somalvico, driven by great passion, took on the enormous costs necessary to meet the possibility of building a prototype, giving it all his property and all the means of his family. he christened his car, calling it the Somalvico So.1 "David".

It was a seaplane biplane, which even at first glance was extremely strange: the wings were made of two round surfaces placed above and below the fuselage. These surfaces were circles with central holes suspended from a cardanic suspension, rotating in opposite directions with a variable frequency. The innovation in the form of a rotational motion of the wings was supposed to perform the function of dynamic equilibrium.

The wings were connected to each other by a vertical shaft of two parts rotating in opposite directions by means of two bevel gears. Thanks to the sphero-cardanic suspension, it was possible to fix the change in the angle of attack from 0 ° to 9 °. According to Somalviko, the change in the frequency of the leading edge of the circular wing made the elevator wheels unnecessary, leaving only the tail fin stabilizer. The wings, instead of being fixed to the rest of the aircraft, were located on ball bearings and the rest of the fuselage could move around the central shaft. According to the intentions of the inventor, this system was supposed to perform automatic stabilization of the aircraft in flight due to simultaneous action of centripetal and centrifugal forces. In addition, according to him, in case of loss of the balance of the machine, it will be enough to return the aircraft in the flight line by rotating the fuselage around the central axis. In practice, by this decision, Somalvik thought to solve the problems of transverse and longitudinal automatic equilibrium. The momentary stability of the aircraft and the change in the angle of attack of the whole system of wings were to advantageously replace the ailerons on the corners, while retaining the horizontal planes. Wings were fastened with metal rods made of welded steel pipes, with a double linen coating and painted in several layers of enamel. The fuselage and tail unit were made with the same materials. In the cockpit, which did not differ from conventional aircraft, the pilot could change the trim with a flywheel that simultaneously controlled the elevator and the position of the ring stabilizer, which served to support the wings during the rotation. The steering wheels were controlled by a pedal. Tail empennage two-kilo, ovoid in shape.

As far as we can judge, further flight attempts have not been made. Given the economic difficulties that the designer had, it was likely that the seaplane was dismantled to get anything, and the engine was sold. In a pamphlet entitled "Designing and constructing an airplane, a device of a heavy category," printed at his own expense in 1929, engineer Somalviko, in addition to confirming the validity of his seaplane and his inspirational concept, put forward a new version with a 360-hp chassis, screws and with a small auxiliary engine of 20 hp, designed to implement the movement of the rotation of the wings. Somalviko described it as

"Interrupted in-flight Eliaplane with supported surfaces rotating in the support state, not blocked, separate from the rest of the device and neutral with respect to the direction of travel."

The brochure concluded with a statement that was both an indictment and the last pathetic request for help.

"In view of obvious technical, financial and social reasons, the state should study the experience of launching an airplane launched by an individual with heroic and tireless victims, in order to show new aerodynamic laws in the interests of safety and experimental flight practice, and in the interests of science . "

As a curiosity, it can be recalled that Corriere della Sera on November 22, 1927 reprinted an article from the authoritative British newspaper The Times, which several days earlier reported literally the following:

"The Times reports that the project of a new airplane with round wings, developed by the Italian Vittorio Isacco, was acquired by the British Ministry of Aviation, which will build a sample for the experiment."

The prototype, which Isakko called elikogiro was actually built in the Cowes in the shops of the Saunders plant, was tested, but there was no follow-up. There is no doubt that engineer Somalviko, two days after the publication of the above-mentioned note in Corriere della Sera, defended the property of his research and experiments. in L'Ambrosiano on November 24, 1927, current disputes were considered:

"An engineer from Como defends the invention of an Eliaplane.Some Italian newspapers, getting the news of the Times, let him know that the Italian Vittorio Isakko was ready to sell to the British Ministry of Aviation a project for the construction of a new type of aircraft with rotating wings.The engineer, Professor Giuseppe Somalvico writes a letter from the province of Como, in which he defends his priority in constructing in his own way and at his own expense an aircraft with rotating wings, solving the problem of a fixed and built-in wing (as is practiced in the seg- ments day airplanes) - in the wing simple and stably supported and rotating with variable frequency with the help of a sphero-cardanic suspension coming from the gondola and, therefore, neutral with respect to the direction of movement and free from slipping. During the construction of the Elikoplan, the patent received by Somalviko on September 8 1917 was significantly improved. "

So.1 "David" is a rarity from past times and represents a unique and very personal attempt by engineer Somalviko to enter the aviation industry. The daughter told me that her father, economically ruined and deeply saddened, refused to take an interest in aviation.
But something of the old passion for flying remained in the family and his son Giuseppe was instilled with a volunteer pilot in Spain in the ranks of the Legionary Aviation (Aviazione Legionaria), shot down on the front by Santander on August 17, 1937, earning a silver medal in memory of him.

Specifications of Somalvico So.1 "David" are not known.

Editor's note: This article is an excerpt from the book "Strange cars in the history of aviation" Volume 2 ("Macchine Bizzarre nella storia dell'aviazione" Vol. 2), the nearest publication of the publishing house Olympia (Editoriale Olimpia).


Quote
Although designed prior to the competition of the Royal Navy (patent September 8, 1917), the So. 1 "David" helicopter built by Como-based engineer Giuseppe Somalvico deserves a nod. The aircraft, which was also at home on the water, had two circular wings placed both atop and below the cockpit and rotated by an engine that also drove a standard two-bladed pusher propeller. While presenting some brilliant solutions for transverse and longitudinal stability, the craft was never able to take-off, due to the propeller breaking up during the craft's first test (24 October 1921) and which was followed by Somavico having a financial meltdown, a striking analogy between the fate of this Lake Como-based designer and that of some other Italian helicopter pioneers.

https://translate.google.com/translate?hl=en&sl=ru&tl=en&u=http%3A%2F%2Falternathistory.org.ua%2Fgidrosamolet-somalviko-lyubopytnaya-mashina-20-kh-godov-s-vrashchayushchimisya-krylyami

http://historylink101.com/bw/e_plane/early/slides/IMG_6979_e2a.html

http://www.theaerodrome.com/forum/showthread.php?t=57702&page=2



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sniperton

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Re: Quest: Guess what is depicted here
« Reply #3207 on: April 10, 2018, 02:40:11 AM »

Thanks, CirX, if I understand correctly, it was a sort of flying gyroscope, but I still don't grasp where the lift came from and how banking/turning was meant to be possible. Anyway, as a patent exists somewhere, it would be interesting if an RC modeller rebuilt it in smaller scale as a proof of concept just for curiosity.
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locopiston

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Re: Quest: Guess what is depicted here
« Reply #3208 on: April 10, 2018, 09:52:45 AM »

And?!?! o_O
what plane is the next riddle! o_O
They are going to drive me crazy! ;D
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SAS~CirX

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Re: Quest: Guess what is depicted here
« Reply #3209 on: April 10, 2018, 10:29:51 AM »

Thanks, CirX, if I understand correctly, it was a sort of flying gyroscope, but I still don't grasp where the lift came from and how banking/turning was meant to be possible. Anyway, as a patent exists somewhere, it would be interesting if an RC modeller rebuilt it in smaller scale as a proof of concept just for curiosity.

Maybe it is the secret to many things....perhaps RC and real builders HAVE tried, and have disappeared... :o
Perhaps if you build something like this, men in black suits will visit you..... :-X
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Gianky

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Re: Quest: Guess what is depicted here
« Reply #3210 on: April 10, 2018, 10:54:53 AM »

CirX, thanks for saving me from a lot of explanations! ;)

Sniperton, great work, your turn now!
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sniperton

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Re: Quest: Guess what is depicted here
« Reply #3211 on: April 10, 2018, 03:32:18 PM »

Thanks, Gianky, I hope this one will be less torturing.
Beware, I want us to be educated, and beyond the solution I also expect some story.


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Gianky

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Re: Quest: Guess what is depicted here
« Reply #3212 on: April 10, 2018, 05:33:36 PM »

You mean some story about how you doctored the image of a Campini Caproni?
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Cloyd

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Re: Quest: Guess what is depicted here
« Reply #3213 on: April 10, 2018, 05:40:47 PM »

Nice catch Gianky. And nice photoshop work Snip.

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Gianky

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Re: Quest: Guess what is depicted here
« Reply #3214 on: April 10, 2018, 05:56:01 PM »

Well, that fuselage is kind of unmistakable for an Italian who's an aviation enthusiast. ;)

Although I have to admit, photoshop was so good that Sniperton had me wondering if the German had created some Frankenplane after the Armistice! ;D
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mexchiwa

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Re: Quest: Guess what is depicted here
« Reply #3215 on: April 11, 2018, 01:04:23 AM »

Is the rear half from That DB Spit?
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