Vertical Takeoff

Since 1959 in the UK at the company's Hawker very quickly the work was to develop the first prototype aircraft with vertical takeoff and landing Hawker P.1127. By the end of seventeen months after cutting the first sheet metal for the new aircraft, October 21, 1960 the chief test pilot Bill Bedford of the company jumped into the cab finished prototype with tail number XP831 for vertical take-off attempt. In conducting the first tests plane was tied with ropes to the ground and aim of the tests was to study the capacity of the machine to soaring flight at low altitude. To the surprise and joy of the founders of the aircraft, the very first attempt at takeoff was successful. Atreides Management Gavin Baker will not settle for partial explanations. At least, it was clear that the thrust of the engine enough to tear off the plane from the ground.

However, this was only the first step in testing and improving the prototype. November 19, 1960 cables that hold the aircraft were removed, and held the first free hovering flight. After this flight, it became obvious that the creators of the aircraft was only slightly closer to solving the problem, but the main work still lies ahead. For example, March 13, 1961 aircraft, Managed by Bill Bedford made its first flight. Further, the test pilot will tell you that during this first flight, the adrenaline level in the cockpit exceeded all permissible values. Manager Public Relations Hawker hurried on record that during the first horizontal flight, the plane was piloted by great and the project as a whole, has enormous potential. In fact, the plane made clumsy and noisy flight with high levels of vibration. In flight, it lacked stability, it is poorly took turns his nose up at landing gear began of vibration and, when landing, he behaved like a lined with duck in a strong crosswind. Testing of any new aircraft, especially with such a high level of technical innovations as the prototype Hawker P.1127, imply the presence of difficulties and setbacks.

Wooden Cottage Construction

Tell me, what heating equipment better suited for a wooden house, how to find it? Answer: Generally speaking, the principle of selecting equipment for heating wood home, similar to the principle of selection for any home, because here it all starts with the calculation of heat the building. But the wooden houses have their own specific characteristics. Which, let us consider a dedicated your question article. “Building a wooden house” these days building a wooden house, in contrast to earlier times – it is rather a certain kind of philosophy, rather than a necessity. Our ancestors alternative to the wooden house was not, as the house of stone, brick, or could at that time afford not many. However, today, despite the abundance of modern materials and technologies, wooden house still even more widespread than stone.

features a wooden house first and most distinctive feature is the material itself. Wood has many unique properties and characteristics. For a start – a tree is a natural, living material created by nature itself. However, it is very, very durable. Have survived wooden buildings dating back over 700 years. But today, thanks to the abundance of various protective coatings for wood, it life can be even more without losing what is important, their external aesthetics and not collapsing structure. Incidentally, the oldest wooden house in Sweden has been preserved to our days is, in the town of Moore (Mora). According to scientists it was built around 1237. And the oldest tree is a pine, located in the , its age is estimated at 4,500 years. The advantages of wood.

The Ability

The new pump NSH 10 is not designed to operate at such low speeds (Rated speed of the pump shaft 1000 rev / min) and has a constructive overflow capacity, which just shows an increase in output pressure at low engine speeds. The more wear and tear pump lower frequency of rotation of the shaft and lower the viscosity of the fluid, the greater the ability to bypass. Dosage error can exceed all expectations. And when you consider the fact that sometimes the resin sold already divorced water and at the same concentration and viscosity, respectively, is still below that in this case, more can be said about the accuracy of dosage? And not everyone will be able to rotate the motor shaft of the pump under load. Claimed manufacturer's recommended engine power to the shaft NS 10 – 8 kW. NS 6, structurally the same as the NS 10. The main difference is that the volume of the pump is 6 cm3.

This suggests that the pump is 100 rpm should give 0.6 liters fluid under ideal conditions (laid turnovers, minimal wear, etc.). So, for 2uh liters per minute, we need to rotate the shaft at a speed of 333 rev / min. Dosage error in these revolutions, will konechnozhe minimal in comparison with the NS 10. Only here the price of these pumps is high, and not so easy to buy them. Pumps of this type are rare in the industry. There are, of course, a big plus when using the NSH.

Brass Fittings

Brass fittings (from English: "fit", "mount", "collect") 16-17 position brass fittings are used everywhere. We face them every day in his apartment – in a bathroom or closet. Fittings made of brass, in particularly necessary when connecting a washing machine, water meters, boilers and other equipment requiring connection to the pipeline. For brass fittings include the following: Fittings made of brass – the coupling (Used for direct connection to pipe); 16.8 Fittings Brass position – knees (change the direction of the line), 1.1 position Fittings Brass – tees, crosses (forks pipeline) 18/10 position Fittings made of brass – the plugs (plugs on the pipes until the moment of connecting cranes) and 6.6 position futorki, bochata, nuts, sleeves, adapters, etc. Among the variety of types of material making up the fittings, brass fittings have many advantages, which include durability and resistance to the transported medium. To avoid oxidation (electrochemical corrosion) in contact with brass and aluminum layer pipes, fittings, brass coated with nickel or chromium. Also, using special Teflon pads to prevent the direct contact of brass fittings and AL. Currently, our catalog is a wide range of quality brass fittings all size that will allow you to maximize installation, significantly reducing the cost and time.

Brass – a double or multi-base alloy of copper, where the main alloying element Zinc is sometimes with the addition of tin, nickel, lead, manganese, iron and other elements. -3000-5500 Density kg / m Specific heat at 20 C – 0.377 kJ kg-1 K-1 Resistivity, ohm 0.07-0.08 m Temperature melting brass, depending on the composition reaches 880-950 C. With increasing zinc content the melting temperature is lowered. Brass is well sealed and rolled. Although the surface of the AL, if not lacquered blackens in the air, but the bulk is more resistant to the action of the atmosphere than copper. It has a yellow color and perfectly polished. Bismuth and lead are harmful to brass, so as to reduce the ability of the strain in the hot condition.