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C-21 Russian Knight

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

The history of this aircraft began in September 1912 g. At that time the competition was held on the aircraft Hull airport Petersburg, built in Russia Russian designers. 18 September constructor I.I. Sikorski after the flight on their "C-6B" received a letter from the Chairman of the Board of joint stock company Russian-Baltic carload factory (RBVZ) MV. Shydlovsky.

He invited the chief designer for dinner, such proposals were made by the Chairman is not all. I.I. Sikorski felt, that this evening will be crucial in his life. After dinner, they talked about the prospects and plans for the future. Sikorski told, that he decided to build a plane multiengined, unique in the world there is no. Szydlowski carefully listened to the story of the designer and firmly said: "Start building immediately".

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

Work on multi-engine aircraft started in October 1912 g. Experts have proven that time, that a large airplane in general unlikely to be capable of flying. One of these experts, someone KN. Finn, He considered "… in the case even if the airplane and was able to get off the ground, then when you stop the flight of one of its engines, he inevitably would have to turn over ". Sikorsky aircraft predicted a complete failure, but he continued to work hard. 13 May 1913 g. aircraft, called "Russian Vityaz", manned I.I. Sikorski, Several large-described circular on aэrodromom, smoothly landed at his hangar. Abroad for a long time we did not want to believe the reports of the St. Petersburg press about the flights "Russian Knights", Considering these reports newspaper duck.

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

The aircraft was a four-engine biplane Multishelf, wherein the lower wing has been shorter than the upper. Fears for the stability and control of such a large plane made Sikorsky to make it very long (20 m). Wings on the structure had a rectangular shape and width 2,5 m, wherein the distance between the wings is also equal to 2,5 m. The fuselage was a wooden rectangular sectional farm, sheathed exterior plywood. The fuselage of the captain's cabin was located, two passenger cabins and room for spare parts and tools. Before the captain's cabin was open area, which should have been installed and gun searchlight. Very interesting was performed rudder, consisting of four surfaces, paired. landing gear, very difficult, It is a structure of four skis with missing between the two bogies, which it was suspended eight wheels on steel springs, paired. On the lower wing were mounted in pairs in four tandem engine "Argus" power of 100 hp, two rotators and two push-pulling screw diameter 2,6 m. The total weight of the aircraft without load was 3500 kg.

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

tests have shown, that the device is stable in flight, and even when walking around the cabin during the flight do not affect the stability of the. Soon Sikorski abandoned tandem motor arrangement and installed them in a row along the front edge of the lower wing. After these alterations plane 2 August 1913 g. I set a world record, stayed in the air 1 no 54 min with seven passengers. But the plane had served briefly, it was destroyed as a result of an unusual event: with "Moeller number 2" flying over the airfield aircraft broke "Gnome" engine and fell to the aircraft Sikorsky. The aircraft did not recover, since the designer began to work on more advanced multi-engine airplane "Ilya Muromets". Though the plane "Russian Vityaz" and short-lived, but he became the world's first multi-engine aircraft had flown successfully.

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

The performance characteristics of C-21 Russian Knight

– chief designer: AND. AND. Sikorski
– First flight: 26 May 1913 of the year
– units produced: 1

The crew of the C-21 Russian Knight

– 3 crew member + 4 passenger

Sizes S-21 Russian Knight

– Length: 20 m
– The maximum wingspan: 27 m
– wing area: 120 m²
– Height: 4,00 m

Engine C-21 Russian Knight

– 4 Argus Motoren engine
– The power of each motor: 100 l. from. (74 kW)

The rate of C-21 Russian Knight

– Cruising speed: 77 kmh
– full speed: 90 kmh

Flight range of the C-21 Russian Knight

– 170 km

Practical ceiling C-21 Russian Knight

– 600 m

Weight C-21 Russian Knight

– Unladen: 3400 kg
– Weight of the load: 4000 kg
– Maximum weight: 4940 kg

Photo C-21 Russian Knight

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

 C-21 Russian Knight Dimensions. Engine. The weight. story. Range of flight

 

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