The aircraft Tupolev ANT-25. A photo. History. Characteristics.
ANT-25 - metal cantilever single-engine nizkoplan having a large elongation of the wing. several record flights were performed on this plane. It was created in the TsAGI Brigade PO Dry under the guidance of A. Tupolev in 1932 year.
From Tupolev ANT-25 I came not with the reliability and performance characteristics, with whom he later made his record-breaking flights. In 1934 was in the Air Force Institute to establish a range of records prepared instance ANT 2-25 (IF Petrov, and AI Filin). Through the installation of a special carburetor, polished surface of the protruding components, slinky cloth wings, aircraft engine installation with gear flying range was increased to up to 7500 12 500 km.
The main feature of the aerodynamic circuit ANT-25 - use it with large wings relative narrowing and elongation, equal respectively 5,3 and 13,1. With this elongation was reduced inductive reactance of the wing, which is associated with the magnitude of the lifting force. To increase stiffness and reduce weight wing resulted in structurally-power circuit of an airplane wing. It performs trehlonzheronnym.
Struts and strut poluubirayuschegosya main landing gear wheels with double brake and oil-air cushioning in each rack fastened to the middle and front of each half-wing spars. The wheels of the main landing gear in the retracted position half belonged to undercarriage and wing fairings were closed. Also, half of its diameter was closed ventral fairing tail wheel. Parts of the surface of the wing and the leading edge of the first ANT-25 was scheduled corrugated.
The fuselage of the aircraft structurally consisted of two main parts: the front, which is a truss, made integrally with the wing center section, and the rear (tail) - a semi-monocoque stressed skin. Engine mount to the engine was attached to the front of the fuselage separated from the firewall 3-local crew cab, which was arranged in the rear and the front of the fuselage. The cabin crew were placed (in sequence): Workplace chief pilot for soft translucent lantern, Sleeps other crew members, workplace navigator with radio navigation and radio communication equipment, astrolyukom and workplace copilot with posts control aircraft with a glazed upper hatch cover and side fuselage windows.
On board the plane was supposed to set the current time navigation and flight equipment: gyromagnetic compass, artificial horizon, radio and giropolukompas, aviation sextant, and later in connection with the organization of flights in the high latitudes of the course pointer. With this equipment the aircraft could be flown at any time of the day, in spite of the clouds. For cabin crew back (tail) of the fuselage becomes the keel on which the stabilizer with a variable-pitch in flight. fuselage skin smooth and rudder and stabilizer - corrugated.
In conclusion, I would like to bring another fact from the biography of the ANT-25. VA Chizhevsky, creating the first aircraft, revealed that their mass-geometric characteristics similar to the aircraft taxiways. Thus, it was possible to borrow feathers, wings and other structural elements that have reduced the time of creation stratoplanov BOC and BOC-7-1.
|Aircraft Length m||13.00|
|Wing area, m2||87.10|
|engine's type||1 PD M-34R|
|Power, hp||X 1 900|
|Maximum speed at the ground, km / h||244|
|Cruising speed, km / h||165|
|Practical range, km||10800|
|Practical ceiling, m||7850|
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