Astronomy Astrophysics

Cosmic Perspectives in Space Physics by Sukumar Biswas (auth.)

By Sukumar Biswas (auth.)

In the early years of the 20th century, Victor Hess of Germany flew tools in balloons and so chanced on in 1912 that an extra-~errestial radiation of unknown foundation is incident in the world with a nearly consistent depth constantly. those penetrating non­ sun radiations which have been referred to as Cosmic Rays via Millikan, united states, opened the hot frontier of area physics and lots of best scientists have been drawn to it. on the finish of global conflict II a few area automobiles, e.g. stratospheric balloons, rockets and satellites have been constructed. In 1950 and onwards, those automobiles enabled dazzling advances in area physics and area astrophysics. New horizons have been opened within the explorations of cosmic rays, the earth's magnetosphere, the sunlight and the heliosphere, the moon and the planets. utilizing space-borne tools, intriguing discoveries have been made up of stars, and galaxies within the infra-red, extremely violet, x-ray and gamma-ray wavelengths. during this textual content e-book those interesting new findings are offered extensive and on a degree compatible for senior undergraduate and graduate scholars, examine scientists and scientists of alternative disciplines. even supposing there are a number of very good books and monographs on diversified facets, every one of these care for particular parts. during this textual content ebook the findings of area physics and astrophysics are provided in an built-in demeanour with right introductions to the basic points, and those are supplemented through proper floor established observations.

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In the solid fuel rockets, on the other hand, both the fuel and the oxidizer are combined in a granular form. These normally stable solid propellants burn rapidly when ignited. The solid propellants such as HTPB (Hydroxy Terminated Poly Butadine) are usually cast in form of a cylinder which fits into the rocket casing with its igniter. When it is fired the solid propellant starts burning from the center to the outer periphery till the entire propellant is burnt out producing a hot gas at high pressure in a short time, say rv 30-50 sec, which produces the desired thrust.

At this stage different types of control gas jets are applied to counteract the deflecting forces on the rocket such as winds etc. and steer it to its designated path. As the first stage of the rocket travels through the dense part of the atmosphere that offer maximum resistance and it has to lift its own weight as well as the weights of the multi stage rockets above it, the first stage requires the maximum amount of fuel and oxidizer to provide the CHAPTER 1 - INTRODUCTION TO SPACE RESEARCH 23 required thrust and hence it is the bulkiest.

And steer it to its designated path. As the first stage of the rocket travels through the dense part of the atmosphere that offer maximum resistance and it has to lift its own weight as well as the weights of the multi stage rockets above it, the first stage requires the maximum amount of fuel and oxidizer to provide the CHAPTER 1 - INTRODUCTION TO SPACE RESEARCH 23 required thrust and hence it is the bulkiest. The rocket engines are basically of two types, the liquid fuel and the solid fuel ones.

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