In 1933, the designers of the American company “Starman” designed the training aircraft, with a motor 215 l,p, called the “model 70”. It was an all-metal biplane with fabric covering, which had fixed landing gear with cantilever main legs and tailwheel. After successful prototype tests launched it into production.
The story of midget submarines began with the artisanal submarines, which can now perform almost any large engineering company – would the money from the customer. But in our time and customers a lot of money, and we are talking primarily about the smugglers and the traffickers. The one who followed world news, noted that in recent years has repeatedly documented cases of the use of midget submarines for the delivery of drugs from Latin America (primarily Colombia) to Mexico, USA and Canada.
It is not easy to assess the situation in the world that has developed after the First world war. The defeated German Empire is the largest country in Western Europe fizzled out in the universal race of ambition and the fight for the championship. Near the bottom of the “pit” was Russia, which was drained almost six years of fighting and revolution. The formal winners — Britain and France suffered during the four years of the “great grinder” too great losses in men, and in the media. The role of a leading world power increasingly passed into the hands of “overseas uncle”. The future seemed vague and incomprehensible.
Tupolev SB aircraft was conceived as a bomber, overtaking fighters. It was natural to create a heavy fighter, designed primarily to combat the bombers. Total produced three prototypes of the SB. According to the decision of the meeting of February 14, 1934, one of them got American motors “Cyclone”, another French Hispano-Suiza, and the third was going to keep in reserve in the form of a set of units. Three days later appeared a decree of the Council of labor and defense (STO), which stated that the third prototype of SB should be equipped with the type of engine, which is better to manifest themselves on tests.
One of the most interesting pages in the history of world tank development was, without doubt, the period of creation towered tanks. He covered almost all of the 1920-ies that is not accidental, because the whole concept of mnogobashenniye schema is a logical continuation of the scheme British tanks during the First world war. English diamond machines were created to break through the defensive positions of enemy infantry, therefore, the location of the main weapons in side sponsons seemed quite obvious. When crossing the defensive lines so it was easier to kill the enemy infantry, entrenched in the trenches. Shots were fired from both sides along the trenches. In the process of transition to tower layout, which was apparent at the final stage of the First world war, the scheme with the placement of the weapons in the sponsons transformed into mnogobashenniye.
Experimental aircraft D-558-I. In late 1944 the Douglas firm received an order to develop an experimental aircraft with a turbojet engine. The main goal of this project was to obtain information about the aerodynamic loads, stability and controllability of the aircraft at transonic speeds. These data were to complement the information obtained in the course of implementation of the programme of tests of a supersonic aircraft X-1. In accordance with the specification developed by NACA (national Advisory Committee for Aeronautics) the aircraft was to take off from the aerodrome, to gain height from 6000 to 10,600 m, within 10 minutes to fly at transonic speeds and then return to the airfield.
Training U-2 aircraft – single-engine biplane of wooden construction with fixed landing gear, was designed at the factory number 1 in Moscow under the leadership of H. H. Polikarpov. His first version took off in the beginning of 1927, the Basis for the series was the second option, took to the air July 1, 1928
The story began during the Second world war. The command of the Wehrmacht, faced at the first stage of hostilities with a large number of Soviet light armored vehicles – tanks BT, T-60, T-70 and armored vehicles, and with our attacking aircraft, especially with the armored attack aircraft Il-2, decided to supply the troops of the 30-mm gun of high destructive power and long range of fire. According to the plan, such weapons must be effective to act on the objects directly on the battlefield, but also at air targets.
An Italian bomber FIAT BR.20 Cicogna. Italian aircraft FIAT BR.20 Cicogna (Italian. — AIST), created in the prewar years, engineer, Celestino Rosatelli, differed from the other two-engine bombers in service with the Italian air force. He had a successful design was completed with the most modern equipment and could carry an impressive bomb load. Combat patrol bomber began in the skies of Spain and ended with the end of world war II on the allied side of Germany, the Italian air force.
