The tests of the first prototype aircraft, the designation "Swan-XII" began December 28, 1915 They spent the Grenadier Corps squadron pilot Lieutenant Sleptsov, on assignment for the occasion from the front. The next day he sent a telegram of August To the Director of Aviation and Aeronautics in the army of Grand Duke Alexander Mikhailovich, "Swan-XII" with motor "Salmson" better than all existing airplanes. Needs immediate order for combat tests. "Later during factory tests has been reached speed of 120 km / h, with a payload of 350 kg the aircraft gained altitude of 2000 m in 22 minutes as a positive phenomenon observed rigid engine installation and absence of vibrations. It turned out that" Swan-XII "is compared with the German" Albatross "greater" margin of volatility at 700 rpm engine "(a small gas), improved handling characteristics of the aircraft, but increased efforts on the handle, and should take steps to reduce them. In order to eliminate other identified shortcomings Sleptsov recommended to remake connections for exhaust so that the latter do not fall into the cabin, cockpit canopy to increase, put the armor for pilot and observer. Lebedev promised the Grand Duke that the payload of the new aircraft will be more than 50 kg, than the French " Voisin, "and that the next prototype will be equipped with two machine guns.
The tests had to be interrupted due to bad weather, and to continue their prototype was sent by rail, first in Kiev and then to Odessa factory "Anatra" where "Swan-XII" arrived on February 11, 1916. After 4 days, a test flight was carried out, followed by taxiing aircraft on the airfield flipped. To repair required two weeks, and it could produce locally, but Lebedev, fearing competition, demanded the return of the car in Petrograd. Two months later, in May 1916, without waiting for the test results, the Grand Duke Alexander Mikhailovich sent a request to the plant Lebedev about the fate of an airplane pilot. It turned out that the aircraft were not repaired and built a new, slightly different from the former, and the tests are going to start in June.
LEBED-Swan-SCALE 1:100
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