According to the rules of the competition model rocket must use only during takeoff the thrust of a jet engine, and the descent of the lifting force of the aerodynamic surface. For performance of requirements it is desirable that during takeoff the shape of the model was close to the missile, that is, would have a minimum lateral area. This requirement is most fully correspond to the model raketoplana with variable wing geometry. Very promising, in particular, the use of all-moving front wing, which at launch is located along the fuselage and therefore has little effect on flight, and the transition planning rotated across, providing the necessary redistribution of aerodynamic forces.
THE ROCKET PLANE “THE DUCK”
In the third issue of our journal in 1968 published a description of the design of snake-gibralta for water skiers, created by the pioneer of this sport in the USSR — Alexander Casein. Over the years the enthusiasts of technical creativity — IV first skiers — produced a large number of these aircraft. Flying snake-gibralta for the boat or car for many has become a favorite form of recreation. There had also been a successful winter flying in the mountains. Muscovite M. Gokhberg, master of sports of water skiing, winter 1973/74 year was flying on a kite, accelerating on the ski slopes in the area Terskol in the Caucasus.
Svobodnaya “out of fashion”. Especially young modelers. What is the reason? Perhaps, in the length and lack of entertainment competition? And maybe the disadvantages of the method of manufacture of models of this type? In fact, if in the first year of studies in the clubs, build conceptual models, the second — planned complex fuselage model. That’s why the need to create a new expense of building a traditional class of models for modelers working in the groups the second year, is dictated by life itself.
The it equipment in the school yard does not present great difficulties and would not require much cost. Students are having such a station will be able to conduct geophysical or meteorological observation, and study various natural phenomena and their relationship. It will have to make only a few simple instruments and tools.
Say, in the Urals during the difficult years of chaos after the civil war an artificer built a car where everything was wooden, even the engine. However, if the wizard so the echo legendary as Leskov’s Levsha, here the use of wood instead of metal in the most important nodes in modern machinery: rolling mills, tractors, cranes, harvesters — not a legend, but a reality of our days.
“For the treatment of infield has decided to replace the tiller internal combustion engine electric. Already got polutoraterabaytny the motor. But it is three phase. How to connect to the network, where only one phase and “my best”?
Boeing Vertol Company was founded in August 1940 by F. PIASECKI, who became the chief designer and Chairman of the Board of the company. During her activities released more than 2,500 aircraft twin-screw longitudinal schema. The first helicopter of the company PV-1 single-rotor design was built in 1943. The first twin-screw PV-3 (prototype of future HRP-1 and H-21), designed by request of the U.S. Navy, took to the air in March 1945.
The idea is to make two-cylinder engine came to us with the son, that is, from want. In times of General scarcity in the economy was necessary for some vehicles to have the house and farmstead to provide those without something to exist person in the Russian hinterland is simply impossible. This is the wood, hay, building materials, which had to bring. Plowing and treatment of the infield in the required quantities without the technology, too, was unbearable.
They say, miracles do not happen. And yet… take a Look sometime in a spare moment in the yard of the house № 11 on the 2nd passage Schukinskaya in Moscow and you will see the real miracles! They appear in this courtyard, along with a surprisingly moving gray-haired man, surrounded by a motley bunch of kids. Opening a small neat shed near the athletic fields, the white-haired man pulls out a one after another some absolutely fantastic machines. One of them resembles a long bench, to which the front, back and sides with attached wheels from scooter; the other, also four, very similar to the old armored car; the third with a motorcycle wheel in front and a propeller at the rear — no matter what is not similar, because such machines do not exist.
English automobile firm Triumph, founded in 1901 in Coventry Austrian immigrant Siegfried Betmenom until 1923 was manufacturing motorcycles. The first car company became TRIUMPH 10/12НР with engine capacity of 1393 cm3, for the first time in England equipped with brakes with hydraulic operation In 1928 there was a slight SUPER SEVEN with engine capacity of 747 cm3, 1932 — SCORPION 12/16НР with a 6-cylinder engine working volume of 1203 cm –3.