And Tupolev-8 (ANT-13). Photo. Story. Characteristics.
And-8, or ANT-13, was an unusual project for KB AN Tupolev. Project ANT-12 (previous model) was not entirely successful, and it will all work to a halt, but the engineer Rodionov still insisted on the construction of a new model based on the fighter failed. Moreover, the work had to be done in your spare time. After the revolution, such events are accepted. Because of this, sometimes in the CB and-8 called "public aircraft". Also for this reason, the plane did not hit the building plan.
Since December 29 years UWS TTT issued to aircraft with flight-technical and technological requirements. Management of the technical plan Tupolev gave P. Sukhoi.
Fighter created in AGOS TsAGI, he belonged to the category of "jockey." "Jockeys" played the role of defense surround important objects. And-8 on technical and flight characteristics had to be agile and climb, which in turn allowed him to make a quick impression interception purposes and to dogfight by quick and short attacks. The maneuverability of the aircraft used lightning allowed to go out of the enemy's attack and quickly rebuilt, once again engage in battle.
Advanced tactical and technical requirements for the ANT-13:
- 1) maximum speed at an altitude of five kilometers - 310 km / h;
- 2) maximum ceiling - 8500 m;
- 3) climb in 5000 m should not exceed seven minutes.
These requirements are approved in January 1930 years.
On the future of fighter history is silent because there is virtually no data left. Among the information found only managed to find two pictures and documents on the history of creation.
In addition to the requirements of the project fighter-interceptor, and well-8 still represented an experimental model. For the first time in the history of Soviet aircraft used in the construction of stainless steel. Among the engines, engineers have chosen "Curtiss Konkveror" with power handling 600 hp But in the calculations flight figures were reduced. Flight weight fighter - 1375 kg, the maximum speed at this weight with the engine "Curtiss" was only 281 km / h and at an altitude of five kilometers are not exceeded b indicator 250 km / h. Also dropped ceiling - 6700 m. It increases the maximum allotted time to climb in 5 km - 13,1 minutes.
Due to the deterioration of the chief engineer decided to examine the possibility of increasing the degree of compression pressure in the engine. Power should grow 75 hp and speed - on 12-15 km / h. Planned installation of a supercharger (impeller). Among the options considered the best was the last: the speed at an altitude of 3,6 km - 313 km / h on 5 km - 303 km / h, the maximum attainable ceiling - 9000 m. The maximum time to climb to five thousand meters was supposed to be not more than eight minutes.
In the absence of another motor and a built-8 Curtiss V-1570 Conqueror. The aircraft structure used different materials. Wings set up of a metal frame with fabric covering, made of steel belts braces wing box, stainless steel shelves 2A allowed to spar, respectively, ribs made from kolchugalyuminievyh profiles. The documents have not indicated what exactly constructed from the fuselage of the aircraft, but it is known that it could be carbon or chrome-molybdenum tubing. Plumage made from kolchugalyuminiya.
Built-8 and ended in mid-November 1930 years, and the first flight, the perfect test pilot M. Gromov, 12 occurred in December of the same year. The weight of the aircraft was increased and 1424 kg, which is why the maximum allotted time in climbing 5 10,32 km increased to minutes. After a while the plane altered. The modernization plan includes a control circuit mounted stabilizer, increased oil cooler and integrated management mechanism crutch. Additionally, calculated using a motor with ethylene glycol cooled, supercharged, change the profile of the wings, change the horizontal stabilizer compensates return, install the propeller spinner and closed fairings on the lantern and the chassis.
In August of the following year on a fighter changed the engine, the chassis and the horizontal tail. It was suggested to start flight tests. Thus, the lapping of the aircraft was carried out before the year 32, but the plane in the series and did not because of the reluctance to purchase motors "Konkveror" and similar engines for the replacement was not.
|Wing area, m2||20.00|
|engine's type||1 PD Curtiss V-1570 Conqueror|
|Power, hp||X 1 600|
|Maximum speed km / h|
|near the ground||303|
|Cruising speed, km / h||287|
|Practical range, km||440|
|The maximum rate of climb, m / min||833|
|Practical ceiling, m||8500|
|Armament:||Two 7.62-mm machine gun PV-1|
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